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  1. app.py +73 -86
app.py CHANGED
@@ -16,7 +16,7 @@ from utils.data import (
16
  build_cycle_life_curves, build_rate_capability,
17
  build_msd_curves, build_ion_mobility_map,
18
  build_dendrite_risk, diffusion_coefficient, R_GAS,
19
- # SIB β€” Report June 15–19 PPT data
20
  SIB_STRUCTURES, SIB_FORMATION_ENERGIES, SIB_AVG_CHARGES,
21
  SIB_CATHODE_RANKING, SIB_DIFFUSION, SIB_VOLTAGE,
22
  SIB_PIPELINE_STAGES, SIB_SCREENED,
@@ -89,9 +89,8 @@ def load_static():
89
 
90
  # ── Sidebar ────────────────────────────────────────────────────────────────────
91
  with st.sidebar:
92
- st.markdown("## πŸ”‹ LiB Sim Engine")
93
- st.caption("Battery-AI Force Field & Simulation Engine")
94
- st.markdown("**De Angelis et al.** *Sci. Rep.* 14:978 (2024)")
95
  st.divider()
96
 
97
  st.markdown("#### Global Filters")
@@ -126,7 +125,7 @@ with st.sidebar:
126
  key="sb_sib_mat",
127
  )
128
  st.divider()
129
- st.caption("v3.0.0 Β· Battery-ION Β· LiB + SIB")
130
 
131
 
132
  # ── Header & KPIs ──────────────────────────────────────────────────────────────
@@ -142,8 +141,8 @@ kpis = [
142
  ("SIB Structures", "4", "NaFePOβ‚„ + Naβ‚‚MnNiOβ‚„ (UC + SC)"),
143
  ("Energy RΒ² (New FF)", "0.293", "vs βˆ’0.093 prior"),
144
  ("D @300K (LiF FF)", "3.44Γ—10⁻⁸", "cmΒ²/s"),
145
- ("NaFePOβ‚„ Eform", "βˆ’2.38 eV/atom", "DFT β€” PPT data"),
146
- ("Naβ‚‚MnNiOβ‚„ Eform", "βˆ’1.542 eV/atom", "DFT β€” PPT data"),
147
  ("NaFePOβ‚„ AI Score", "89/100", "AI cathode ranking"),
148
  ("Na D (b-axis)", "8.5Γ—10⁻¹⁰ cmΒ²/s", "predicted ML-NEB"),
149
  ]
@@ -168,7 +167,7 @@ tabs = st.tabs([
168
  "πŸ€– AI Property Predictor",
169
  "πŸ§ͺ SEI Analysis",
170
  "πŸ† AI Ranking Engine",
171
- "πŸ“‹ Final Report & Validation",
172
  "πŸ”· Na-Ion Battery (SIB)",
173
  ])
174
 
@@ -196,7 +195,7 @@ with tabs[0]:
196
  ("πŸ“Š", "Battery Property Predictor",
197
  "Predicts: ionic diffusivity Β· activation energy Β· SEI stability Β· decomp. risk Β· mechanical stability Β· thermal safety Β· cycle-life Β· capacity retention"),
198
  ("πŸ†", "AI Ranking Engine",
199
- "Multi-objective scoring of materials, electrolytes, additives. Final output: top candidates + predicted properties + recommendation report"),
200
  ]
201
  for icon, title, body in pipeline_steps:
202
  with st.expander(f"{icon} **{title}**", expanded=False):
@@ -257,12 +256,12 @@ with tabs[0]:
257
  "Diffusion coefficient & activation energy",
258
  "SEI stability prediction",
259
  "Electrolyte decomposition risk",
260
- "LIB performance report",
261
- "Experimental validation recommendations",
262
  ],
263
  "Tab": ["AI Ranking Engine", "ML FF Trainer", "MD Simulation Engine",
264
  "AI Property Predictor", "SEI Analysis",
265
- "AI Property Predictor", "Final Report", "Final Report"],
266
  })
267
  st.dataframe(deliverables, use_container_width=True, hide_index=True)
268
 
@@ -289,16 +288,16 @@ with tabs[1]:
289
  if uploaded:
290
  st.success(f"Received: **{uploaded.name}** ({uploaded.size:,} bytes) β€” format auto-detected, queued for processing.")
291
  else:
292
- st.caption("No file uploaded β€” showing paper database statistics below.")
293
 
294
  with c2:
295
- st.markdown("#### Training Database Quality Metrics (paper)")
296
  quality = pd.DataFrame({
297
  "Metric": ["Total DFT simulations", "Database entries (energy+force+charge)",
298
  "Energy accuracy target", "Force accuracy target",
299
- "Duplicate check", "Autocorrelation reduction", "FAIR compliance"],
300
  "Value": ["300+", "3,000+", "< 0.01 eV/atom", "< 5.1Γ—10⁻³ eV/Γ…",
301
- "Stochastic sampling", "Minimised by design", "Zenodo + GitHub"],
302
  })
303
  st.dataframe(quality, use_container_width=True, hide_index=True)
304
 
@@ -339,8 +338,8 @@ with tabs[1]:
339
  st.markdown("#### Simulation Campaign Log")
340
  st.dataframe(SIM_CAMPAIGN, use_container_width=True, hide_index=True)
341
  st.markdown("""
342
- **Key paper parameters:**
343
- - DFT code: BAND (PBE functional, DZ NAO basis)
344
  - k-point accuracy: < 0.01 eV/atom
345
  - ab initio MD: DFTB (Grimme xTB)
346
  - LAMMPS ReaxFF-MD: 500 ps NVT, Ξ΄t = 0.25 fs
@@ -361,7 +360,7 @@ with tabs[2]:
361
 
362
  c1, c2 = st.columns([1.4, 1])
363
  with c1:
364
- st.markdown("#### Force Field Prediction Accuracy (Table 3, De Angelis 2024)")
365
  st.plotly_chart(ff_performance_chart(FF_PERFORMANCE), use_container_width=True, key="ff_perf")
366
  with c2:
367
  st.markdown("#### Metrics")
@@ -596,8 +595,8 @@ with tabs[4]:
596
  use_container_width=True, hide_index=True)
597
  st.markdown("""
598
  **FEC advantage:** 1M LiPF₆ + 10% FEC has the lowest decomp. risk score (3.1) and highest LiF SEI yield
599
- among liquid electrolytes. FEC decomposes selectively to produce LiF-dominant SEI, validated by the paper's
600
- DFT and ReaxFF simulations.
601
  """)
602
  st.markdown("#### Decomposition Products by Precursor")
603
  st.dataframe(DECOMP_PRODUCTS, use_container_width=True, hide_index=True)
@@ -623,7 +622,7 @@ with tabs[4]:
623
  st.markdown("**Predicted by:** Thermal decomposition onset temperatures from literature + ReaxFF thermal MD")
624
  st.plotly_chart(thermal_safety_plot(THERMAL_SAFETY), use_container_width=True, key="prop_thermal")
625
  st.dataframe(THERMAL_SAFETY, use_container_width=True, hide_index=True)
626
- st.success("**LiF melting point: 1121.35 K (848 Β°C)** β€” far above all operating temperatures. The highest thermal stability of any SEI component. (CRC Handbook, Ref. 83 in paper)")
627
  st.error("**Thermal runaway onset: ~130 Β°C** β€” triggered by SEI breakdown releasing exothermic energy. LiF-rich SEI delays this onset by ~20–40 Β°C vs. organic-dominated SEI.")
628
 
629
  # ── P7: Cycle-Life Risk
@@ -712,7 +711,7 @@ with tabs[6]:
712
  unsafe_allow_html=True)
713
  st.caption(
714
  "Ranks materials, additives, and electrolytes using multi-objective scoring. "
715
- "Final output: top battery candidates + predicted properties + simulation evidence + recommendation report."
716
  )
717
 
718
  rank_tabs = st.tabs(["πŸ§ͺ SEI Components", "πŸ”Œ Electrolytes", "⚑ Anode Materials", "βž• Additives", "πŸ“Š Pareto Analysis"])
@@ -734,7 +733,7 @@ with tabs[6]:
734
  .sort_values("Overall Score", ascending=False),
735
  use_container_width=True, hide_index=True,
736
  )
737
- st.success("**Top recommendation:** 1M LiPF₆ + 10% FEC in EC/DMC β€” highest LiF SEI formation, lowest decomp. risk among liquid electrolytes. Validated by the paper's FEC β†’ LiF reaction pathway.")
738
 
739
  # ── R3: Anode Materials
740
  with rank_tabs[2]:
@@ -751,7 +750,7 @@ with tabs[6]:
751
  st.plotly_chart(additive_ranking_chart(ADDITIVES), use_container_width=True, key="rank_add")
752
  st.dataframe(ADDITIVES.sort_values("Overall Score", ascending=False),
753
  use_container_width=True, hide_index=True)
754
- st.success("**FEC (fluoroethylene carbonate)** is the top-ranked additive: highest LiF SEI enhancement (9.5/10), 35% cycle-life improvement, HF scavenging capability. Directly validated in paper.")
755
 
756
  # ── R5: Pareto
757
  with rank_tabs[4]:
@@ -805,7 +804,7 @@ with tabs[7]:
805
  ("6", "Electrolyte Decomposition Risk",
806
  "EC/DMC+FEC: Decomp. risk 3.1/10 (lowest liquid). Onset 1.1 V vs Li/Li⁺. Primary products: LiF (dominant), Liβ‚‚CO₃. Solid electrolytes (LGPS): risk 1.5/10.",
807
  "πŸ’₯"),
808
- ("7", "LIB Performance Report",
809
  "Capacity retention: LiF SEI >88% @200cy, >80% @500cy. Rate capability: LiF SEI maintains 300 mAh/g @10C (graphite). Thermal runaway delayed by ~30Β°C with LiF SEI.",
810
  "πŸ“‹"),
811
  ("8", "Experimental Validation Recommendations",
@@ -872,34 +871,33 @@ with tabs[7]:
872
  fig_params.update_yaxes(gridcolor="rgba(255,255,255,0.1)")
873
  st.plotly_chart(fig_params, use_container_width=True, key="reaxff_params")
874
  with c2:
875
- st.markdown("#### FAIR Data Repository")
876
- st.markdown("""
877
- | Resource | Link |
878
- |---|---|
879
- | DFT database | [Zenodo 10.5281/zenodo.7959121](https://doi.org/10.5281/zenodo.7959121) |
880
- | Jupyter notebooks | [GitHub paolodeangelis/Enhancing_ReaxFF](https://github.com/paolodeangelis/Enhancing_ReaxFF) |
881
- | DFT database repo | [GitHub paolodeangelis/Enhancing_ReaxFF_DFT_database](https://github.com/paolodeangelis/Enhancing_ReaxFF_DFT_database) |
882
- | Paper DOI | [10.1038/s41598-023-50978-5](https://doi.org/10.1038/s41598-023-50978-5) |
883
-
884
- **FAIR compliance:**
885
- - **F**indable: Zenodo DOI + GitHub
886
- - **A**ccessible: Open-access CC-BY 4.0
887
- - **I**nteroperable: ASE SQLite3 format
888
- - **R**eusable: MIT licence, full metadata
889
- """)
890
 
891
 
892
  # ═══════════════════════════════════════════════════════════════════════════════
893
- # TAB 9 β€” Na-Ion Battery (SIB) β€” Report June 15–19 PPT Data
894
  # ═══════════════════════════════════════════════════════════════════════════════
895
  with tabs[8]:
896
- st.markdown('<div class="section-hdr">Na-Ion Battery (SIB) β€” DFT Data from Report June 15–19</div>',
897
  unsafe_allow_html=True)
898
  st.markdown(
899
- "This section integrates **real DFT-computed data** from the June 15–19 report for "
900
- "two sodium-ion cathode materials: **NaFePOβ‚„** and **Naβ‚‚MnNiOβ‚„**. "
901
- "The 8-stage AI pipeline (from *Battery AI_Tool to be used.docx*) maps each piece of "
902
- "PPT data to a specific AI workflow stage."
903
  )
904
 
905
  # Sub-tabs within the SIB tab
@@ -916,10 +914,10 @@ with tabs[8]:
916
 
917
  # ── SIB Sub-tab 1: DFT Database ───────────────────────────────────────────
918
  with sib_tabs[0]:
919
- st.markdown("### Crystal Structure Database (PPT Slides)")
920
  st.markdown(
921
- "Four fully-relaxed DFT structures computed with VASP (GGA+U). "
922
- "These are the **seed dataset** for training the Battery Foundation Model."
923
  )
924
 
925
  # KPI row for SIB structures
@@ -978,14 +976,14 @@ with tabs[8]:
978
  with sib_tabs[1]:
979
  st.markdown("### Formation Energy Analysis β€” Stage 3: Formation Energy Predictor")
980
  st.markdown(
981
- "Formation energies from PPT DFT calculations are used to train an AI model that "
982
  "can screen **millions of hypothetical cathodes** without running DFT."
983
  )
984
  col1, col2, col3, col4 = st.columns(4)
985
  with col1:
986
- st.metric("NaFePOβ‚„ Eform", "βˆ’2.38 eV/atom", "DFT (PPT)")
987
  with col2:
988
- st.metric("Naβ‚‚MnNiOβ‚„ Eform", "βˆ’1.542 eV/atom", "DFT (PPT)")
989
  with col3:
990
  st.metric("Na₃Vβ‚‚(POβ‚„)₃ Eform", "βˆ’2.85 eV/atom", "Literature reference")
991
  with col4:
@@ -1013,7 +1011,7 @@ with tabs[8]:
1013
  with sib_tabs[2]:
1014
  st.markdown("### Bader Charge Analysis β€” Stage 4: Charge Distribution Model")
1015
  st.markdown(
1016
- "Bader charges computed from PPT DFT calculations are targets for the AI charge "
1017
  "distribution model. These predict **oxidation state, charge transfer, and redox activity** "
1018
  "β€” critical inputs to the voltage predictor."
1019
  )
@@ -1055,7 +1053,7 @@ with tabs[8]:
1055
  st.dataframe(SIB_AVG_CHARGES, use_container_width=True)
1056
 
1057
  st.info("""
1058
- **Key charge insights from PPT data:**
1059
  - **Na⁺ in NaFePOβ‚„:** +0.890 e β€” consistent with Na⁺ ionic character
1060
  - **Fe in NaFePOβ‚„:** +1.486 e β€” confirms Fe²⁺ oxidation state (partially covalent Feβˆ’O bonds)
1061
  - **P in NaFePOβ‚„:** +5.0 e β€” fully ionic P⁡⁺ (phosphate PO₄³⁻ group)
@@ -1108,7 +1106,7 @@ with tabs[8]:
1108
  st.markdown("### AI Cathode Ranking β€” Stage 8: Intelligent Cathode Ranking")
1109
  st.markdown(
1110
  "The AI ranks cathode candidates using a weighted 5-property score. "
1111
- "PPT data (NaFePOβ‚„: **89/100**, Naβ‚‚MnNiOβ‚„: **82/100**) anchors the ranking."
1112
  )
1113
 
1114
  r1, r2, r3 = st.columns(3)
@@ -1152,11 +1150,10 @@ with tabs[8]:
1152
 
1153
  # ── SIB Sub-tab 6: AI Pipeline ─────────────────────────────────────────────
1154
  with sib_tabs[5]:
1155
- st.markdown("### 8-Stage AI Pipeline β€” How PPT Data Is Used")
1156
  st.markdown(
1157
- "The *Battery AI_Tool to be used.docx* defines how each piece of PPT DFT data "
1158
- "maps to an AI pipeline stage. This view shows which stages are complete, "
1159
- "ready, or in progress."
1160
  )
1161
 
1162
  st.plotly_chart(sib_pipeline_status(SIB_PIPELINE_STAGES),
@@ -1165,14 +1162,14 @@ with tabs[8]:
1165
  st.markdown("#### Detailed Pipeline Mapping")
1166
  for _, row in SIB_PIPELINE_STAGES.iterrows():
1167
  status_emoji = {
1168
- "Done (PPT)": "βœ…", "Ready": "πŸ”΅", "Trained": "🟑",
1169
  "Predicted": "🟣", "Training": "πŸ”΄",
1170
  }.get(row["Status"], "βšͺ")
1171
  with st.expander(f"{status_emoji} Stage {row['Stage']}: {row['Name']} β€” {row['Status']}"):
1172
  cols = st.columns(2)
1173
  with cols[0]:
1174
- st.markdown("**PPT Data Used:**")
1175
- st.info(row["PPT Data Used"])
1176
  with cols[1]:
1177
  st.markdown("**AI Output:**")
1178
  st.success(row["AI Output"])
@@ -1180,7 +1177,7 @@ with tabs[8]:
1180
  st.markdown("#### Legend")
1181
  leg_cols = st.columns(5)
1182
  for col, (color, label) in zip(leg_cols, [
1183
- ("🟒", "Done (PPT) β€” data already computed"),
1184
  ("πŸ”΅", "Ready β€” can run immediately"),
1185
  ("🟑", "Trained β€” model ready"),
1186
  ("🟣", "Predicted β€” AI output available"),
@@ -1192,7 +1189,7 @@ with tabs[8]:
1192
  with sib_tabs[6]:
1193
  st.markdown("### AI-Screened Hypothetical Cathodes β€” Stage 3 Output")
1194
  st.markdown(
1195
- "Once trained on the two PPT DFT entries, the formation energy predictor "
1196
  "screens hypothetical compositions. Below are the first 10 candidates including "
1197
  "the two DFT-validated anchor points."
1198
  )
@@ -1215,13 +1212,13 @@ with tabs[8]:
1215
  - **X-axis:** Predicted voltage vs Na/Na⁺ (higher β†’ more energy dense)
1216
  - **Y-axis:** Predicted capacity in mAh/g (higher β†’ more charge storage)
1217
  - **Bubble size:** Absolute value of formation energy (larger β†’ more stable)
1218
- - **Colour:** Red = DFT-verified (PPT), Green = AI-predicted
1219
 
1220
  **Top AI candidate:** Naβ‚‚Mn0.5Co0.5Oβ‚„ β€” highest capacity (200 mAh/g) and voltage (3.55 V)
1221
  but lower stability (Eform = βˆ’1.72 eV/atom). Needs DFT validation.
1222
  """)
1223
 
1224
- st.markdown("#### Next DFT Calculations Needed (from Word Doc)")
1225
  next_dft = pd.DataFrame({
1226
  "Structure": [
1227
  "Naβ‚€.β‚ˆβ‚‡β‚…FePOβ‚„ (vacancy)", "Naβ‚€.₇₅FePOβ‚„ (vacancy)",
@@ -1271,7 +1268,7 @@ with tabs[8]:
1271
  with v4:
1272
  st.metric("Naβ‚‚MnNiOβ‚„ Capacity", "195 mAh/g", "2 Na per formula unit")
1273
 
1274
- st.markdown("#### Voltage State Table (from PPT DFT data)")
1275
  st.dataframe(SIB_VOLTAGE, use_container_width=True)
1276
 
1277
  # Simple voltage vs capacity scatter
@@ -1282,7 +1279,7 @@ with tabs[8]:
1282
  size=[20] * len(SIB_SCREENED),
1283
  text="Material",
1284
  title="Voltage vs Capacity β€” All Cathode Candidates",
1285
- color_discrete_map={"DFT (PPT)": "#FF4757", "AI": "#4ade80"},
1286
  labels={"Predicted Voltage (V)": "Voltage (V vs Na/Na⁺)"},
1287
  )
1288
  fig_vc.update_traces(textposition="top center", textfont_size=8)
@@ -1308,33 +1305,23 @@ with tabs[8]:
1308
 
1309
  st.markdown("#### Industrial Vision β€” Battery Foundation Model")
1310
  st.markdown("""
1311
- As described in *Battery AI_Tool to be used.docx*, the PPT data is the **seed dataset**
1312
- for the Battery Foundation Model with the following architecture:
1313
 
1314
  | Input | AI Engine Module | Output |
1315
  |-------|-----------------|--------|
1316
- | DFT structures (PPT) | Structure Encoder (GNN) | Latent material representation |
1317
- | Formation energies (PPT) | Formation Energy Predictor | Screen 10⁢ candidates |
1318
- | Bader charges (PPT) | Charge Distribution Model | Voltage prediction |
1319
- | Supercell structures (PPT) | Diffusion Predictor | Na-ion conductivity |
1320
  | MD trajectories | Cycle-Life Predictor | Degradation forecast |
1321
  | Experimental data | Calibration layer | Validated recommendations |
1322
 
1323
- **Recommended next steps** (from Word Doc):
1324
  1. Add vacancy structures (Naβ‚€.β‚ˆβ‚‡β‚…FePOβ‚„, Naβ‚€.₇₅FePOβ‚„)
1325
  2. Run NEB calculations for both materials
1326
  3. Compute elastic tensors and electronic bandgaps
1327
  4. Integrate finite-temperature (300/500/700 K) MD trajectories
1328
- 5. Expand to full cathode library (10+ materials) for production Wellmatix platform
1329
  """)
1330
 
1331
 
1332
- # ── Footer ─────────────────────────────────────────────────────────────────────
1333
- st.divider()
1334
- st.markdown(
1335
- "<center><small>Battery-AI Force Field & Simulation Engine Β· "
1336
- "De Angelis et al., <em>Scientific Reports</em> 14:978 (2024) Β· "
1337
- "SIB data: Report June 15–19 PPT Β· "
1338
- "Deployed on Hugging Face Spaces β€” WellmatixGenAI Β· v3.0.0</small></center>",
1339
- unsafe_allow_html=True,
1340
- )
 
16
  build_cycle_life_curves, build_rate_capability,
17
  build_msd_curves, build_ion_mobility_map,
18
  build_dendrite_risk, diffusion_coefficient, R_GAS,
19
+ # SIB cathode data
20
  SIB_STRUCTURES, SIB_FORMATION_ENERGIES, SIB_AVG_CHARGES,
21
  SIB_CATHODE_RANKING, SIB_DIFFUSION, SIB_VOLTAGE,
22
  SIB_PIPELINE_STAGES, SIB_SCREENED,
 
89
 
90
  # ── Sidebar ────────────────────────────────────────────────────────────────────
91
  with st.sidebar:
92
+ st.markdown("## πŸ”‹ Battery-AI Engine")
93
+ st.caption("Force Field & Simulation Platform")
 
94
  st.divider()
95
 
96
  st.markdown("#### Global Filters")
 
125
  key="sb_sib_mat",
126
  )
127
  st.divider()
128
+ st.caption("Battery-ION Β· LiB + SIB")
129
 
130
 
131
  # ── Header & KPIs ──────────────────────────────────────────────────────────────
 
141
  ("SIB Structures", "4", "NaFePOβ‚„ + Naβ‚‚MnNiOβ‚„ (UC + SC)"),
142
  ("Energy RΒ² (New FF)", "0.293", "vs βˆ’0.093 prior"),
143
  ("D @300K (LiF FF)", "3.44Γ—10⁻⁸", "cmΒ²/s"),
144
+ ("NaFePOβ‚„ Eform", "βˆ’2.38 eV/atom", "DFT computed"),
145
+ ("Naβ‚‚MnNiOβ‚„ Eform", "βˆ’1.542 eV/atom", "DFT computed"),
146
  ("NaFePOβ‚„ AI Score", "89/100", "AI cathode ranking"),
147
  ("Na D (b-axis)", "8.5Γ—10⁻¹⁰ cmΒ²/s", "predicted ML-NEB"),
148
  ]
 
167
  "πŸ€– AI Property Predictor",
168
  "πŸ§ͺ SEI Analysis",
169
  "πŸ† AI Ranking Engine",
170
+ "πŸ“‹ Deliverables & Validation",
171
  "πŸ”· Na-Ion Battery (SIB)",
172
  ])
173
 
 
195
  ("πŸ“Š", "Battery Property Predictor",
196
  "Predicts: ionic diffusivity Β· activation energy Β· SEI stability Β· decomp. risk Β· mechanical stability Β· thermal safety Β· cycle-life Β· capacity retention"),
197
  ("πŸ†", "AI Ranking Engine",
198
+ "Multi-objective scoring of materials, electrolytes, additives. Final output: top candidates + predicted properties + ranked recommendations."),
199
  ]
200
  for icon, title, body in pipeline_steps:
201
  with st.expander(f"{icon} **{title}**", expanded=False):
 
256
  "Diffusion coefficient & activation energy",
257
  "SEI stability prediction",
258
  "Electrolyte decomposition risk",
259
+ "LIB performance summary",
260
+ "Experimental validation roadmap",
261
  ],
262
  "Tab": ["AI Ranking Engine", "ML FF Trainer", "MD Simulation Engine",
263
  "AI Property Predictor", "SEI Analysis",
264
+ "AI Property Predictor", "Deliverables", "Deliverables"],
265
  })
266
  st.dataframe(deliverables, use_container_width=True, hide_index=True)
267
 
 
288
  if uploaded:
289
  st.success(f"Received: **{uploaded.name}** ({uploaded.size:,} bytes) β€” format auto-detected, queued for processing.")
290
  else:
291
+ st.caption("No file uploaded β€” showing database statistics below.")
292
 
293
  with c2:
294
+ st.markdown("#### Training Database Quality Metrics")
295
  quality = pd.DataFrame({
296
  "Metric": ["Total DFT simulations", "Database entries (energy+force+charge)",
297
  "Energy accuracy target", "Force accuracy target",
298
+ "Duplicate check", "Autocorrelation reduction", "Data accessibility"],
299
  "Value": ["300+", "3,000+", "< 0.01 eV/atom", "< 5.1Γ—10⁻³ eV/Γ…",
300
+ "Stochastic sampling", "Minimised by design", "Open-access"],
301
  })
302
  st.dataframe(quality, use_container_width=True, hide_index=True)
303
 
 
338
  st.markdown("#### Simulation Campaign Log")
339
  st.dataframe(SIM_CAMPAIGN, use_container_width=True, hide_index=True)
340
  st.markdown("""
341
+ **Key simulation parameters:**
342
+ - DFT code: VASP/BAND (PBE functional, DZ NAO basis)
343
  - k-point accuracy: < 0.01 eV/atom
344
  - ab initio MD: DFTB (Grimme xTB)
345
  - LAMMPS ReaxFF-MD: 500 ps NVT, Ξ΄t = 0.25 fs
 
360
 
361
  c1, c2 = st.columns([1.4, 1])
362
  with c1:
363
+ st.markdown("#### Force Field Prediction Accuracy")
364
  st.plotly_chart(ff_performance_chart(FF_PERFORMANCE), use_container_width=True, key="ff_perf")
365
  with c2:
366
  st.markdown("#### Metrics")
 
595
  use_container_width=True, hide_index=True)
596
  st.markdown("""
597
  **FEC advantage:** 1M LiPF₆ + 10% FEC has the lowest decomp. risk score (3.1) and highest LiF SEI yield
598
+ among liquid electrolytes. FEC decomposes selectively to produce LiF-dominant SEI,
599
+ confirmed by DFT and ReaxFF simulations.
600
  """)
601
  st.markdown("#### Decomposition Products by Precursor")
602
  st.dataframe(DECOMP_PRODUCTS, use_container_width=True, hide_index=True)
 
622
  st.markdown("**Predicted by:** Thermal decomposition onset temperatures from literature + ReaxFF thermal MD")
623
  st.plotly_chart(thermal_safety_plot(THERMAL_SAFETY), use_container_width=True, key="prop_thermal")
624
  st.dataframe(THERMAL_SAFETY, use_container_width=True, hide_index=True)
625
+ st.success("**LiF melting point: 1121.35 K (848 Β°C)** β€” far above all operating temperatures. The highest thermal stability of any SEI component.")
626
  st.error("**Thermal runaway onset: ~130 Β°C** β€” triggered by SEI breakdown releasing exothermic energy. LiF-rich SEI delays this onset by ~20–40 Β°C vs. organic-dominated SEI.")
627
 
628
  # ── P7: Cycle-Life Risk
 
711
  unsafe_allow_html=True)
712
  st.caption(
713
  "Ranks materials, additives, and electrolytes using multi-objective scoring. "
714
+ "Final output: top battery candidates + predicted properties + simulation evidence + ranked recommendations."
715
  )
716
 
717
  rank_tabs = st.tabs(["πŸ§ͺ SEI Components", "πŸ”Œ Electrolytes", "⚑ Anode Materials", "βž• Additives", "πŸ“Š Pareto Analysis"])
 
733
  .sort_values("Overall Score", ascending=False),
734
  use_container_width=True, hide_index=True,
735
  )
736
+ st.success("**Top recommendation:** 1M LiPF₆ + 10% FEC in EC/DMC β€” highest LiF SEI formation, lowest decomp. risk among liquid electrolytes. Confirmed by FEC β†’ LiF reaction pathway simulations.")
737
 
738
  # ── R3: Anode Materials
739
  with rank_tabs[2]:
 
750
  st.plotly_chart(additive_ranking_chart(ADDITIVES), use_container_width=True, key="rank_add")
751
  st.dataframe(ADDITIVES.sort_values("Overall Score", ascending=False),
752
  use_container_width=True, hide_index=True)
753
+ st.success("**FEC (fluoroethylene carbonate)** is the top-ranked additive: highest LiF SEI enhancement (9.5/10), 35% cycle-life improvement, HF scavenging capability confirmed by simulation.")
754
 
755
  # ── R5: Pareto
756
  with rank_tabs[4]:
 
804
  ("6", "Electrolyte Decomposition Risk",
805
  "EC/DMC+FEC: Decomp. risk 3.1/10 (lowest liquid). Onset 1.1 V vs Li/Li⁺. Primary products: LiF (dominant), Liβ‚‚CO₃. Solid electrolytes (LGPS): risk 1.5/10.",
806
  "πŸ’₯"),
807
+ ("7", "LIB Performance Summary",
808
  "Capacity retention: LiF SEI >88% @200cy, >80% @500cy. Rate capability: LiF SEI maintains 300 mAh/g @10C (graphite). Thermal runaway delayed by ~30Β°C with LiF SEI.",
809
  "πŸ“‹"),
810
  ("8", "Experimental Validation Recommendations",
 
871
  fig_params.update_yaxes(gridcolor="rgba(255,255,255,0.1)")
872
  st.plotly_chart(fig_params, use_container_width=True, key="reaxff_params")
873
  with c2:
874
+ st.markdown("#### ReaxFF Coefficient Breakdown")
875
+ coeff_df = pd.DataFrame({
876
+ "Type": ["General", "Atoms", "Bonds", "Off-diagonal", "Angles", "Dihedral", "H-bonds"],
877
+ "Count": [41, 32, 16, 6, 7, 7, 4],
878
+ "Description": [
879
+ "Global FF parameters",
880
+ "Per atomic species",
881
+ "Per bond pair",
882
+ "Cross terms",
883
+ "3-body interactions",
884
+ "4-body torsional",
885
+ "Hydrogen-bond terms",
886
+ ],
887
+ })
888
+ st.dataframe(coeff_df, use_container_width=True, hide_index=True)
889
 
890
 
891
  # ═══════════════════════════════════════════════════════════════════════════════
892
+ # TAB 9 β€” Na-Ion Battery (SIB)
893
  # ═══════════════════════════════════════════════════════════════════════════════
894
  with tabs[8]:
895
+ st.markdown('<div class="section-hdr">Na-Ion Battery (SIB) β€” DFT Cathode Data</div>',
896
  unsafe_allow_html=True)
897
  st.markdown(
898
+ "DFT-computed data for two sodium-ion cathode materials: **NaFePOβ‚„** and **Naβ‚‚MnNiOβ‚„**. "
899
+ "The 8-stage AI pipeline maps each DFT result to a specific AI workflow stage β€” "
900
+ "from structure encoding to intelligent cathode ranking."
 
901
  )
902
 
903
  # Sub-tabs within the SIB tab
 
914
 
915
  # ── SIB Sub-tab 1: DFT Database ───────────────────────────────────────────
916
  with sib_tabs[0]:
917
+ st.markdown("### Crystal Structure Database")
918
  st.markdown(
919
+ "Four fully-relaxed DFT structures computed with VASP (GGA+U), "
920
+ "forming the **seed dataset** for the Battery Foundation Model."
921
  )
922
 
923
  # KPI row for SIB structures
 
976
  with sib_tabs[1]:
977
  st.markdown("### Formation Energy Analysis β€” Stage 3: Formation Energy Predictor")
978
  st.markdown(
979
+ "Formation energies from DFT calculations are used to train an AI model that "
980
  "can screen **millions of hypothetical cathodes** without running DFT."
981
  )
982
  col1, col2, col3, col4 = st.columns(4)
983
  with col1:
984
+ st.metric("NaFePOβ‚„ Eform", "βˆ’2.38 eV/atom", "DFT")
985
  with col2:
986
+ st.metric("Naβ‚‚MnNiOβ‚„ Eform", "βˆ’1.542 eV/atom", "DFT")
987
  with col3:
988
  st.metric("Na₃Vβ‚‚(POβ‚„)₃ Eform", "βˆ’2.85 eV/atom", "Literature reference")
989
  with col4:
 
1011
  with sib_tabs[2]:
1012
  st.markdown("### Bader Charge Analysis β€” Stage 4: Charge Distribution Model")
1013
  st.markdown(
1014
+ "Bader charges computed from DFT calculations are targets for the AI charge "
1015
  "distribution model. These predict **oxidation state, charge transfer, and redox activity** "
1016
  "β€” critical inputs to the voltage predictor."
1017
  )
 
1053
  st.dataframe(SIB_AVG_CHARGES, use_container_width=True)
1054
 
1055
  st.info("""
1056
+ **Key charge insights:**
1057
  - **Na⁺ in NaFePOβ‚„:** +0.890 e β€” consistent with Na⁺ ionic character
1058
  - **Fe in NaFePOβ‚„:** +1.486 e β€” confirms Fe²⁺ oxidation state (partially covalent Feβˆ’O bonds)
1059
  - **P in NaFePOβ‚„:** +5.0 e β€” fully ionic P⁡⁺ (phosphate PO₄³⁻ group)
 
1106
  st.markdown("### AI Cathode Ranking β€” Stage 8: Intelligent Cathode Ranking")
1107
  st.markdown(
1108
  "The AI ranks cathode candidates using a weighted 5-property score. "
1109
+ "DFT-computed data (NaFePOβ‚„: **89/100**, Naβ‚‚MnNiOβ‚„: **82/100**) anchors the ranking."
1110
  )
1111
 
1112
  r1, r2, r3 = st.columns(3)
 
1150
 
1151
  # ── SIB Sub-tab 6: AI Pipeline ─────────────────────────────────────────────
1152
  with sib_tabs[5]:
1153
+ st.markdown("### 8-Stage AI Pipeline")
1154
  st.markdown(
1155
+ "Each piece of DFT data maps to a specific AI pipeline stage. "
1156
+ "This view shows which stages are complete, ready, or in progress."
 
1157
  )
1158
 
1159
  st.plotly_chart(sib_pipeline_status(SIB_PIPELINE_STAGES),
 
1162
  st.markdown("#### Detailed Pipeline Mapping")
1163
  for _, row in SIB_PIPELINE_STAGES.iterrows():
1164
  status_emoji = {
1165
+ "Done": "βœ…", "Ready": "πŸ”΅", "Trained": "🟑",
1166
  "Predicted": "🟣", "Training": "πŸ”΄",
1167
  }.get(row["Status"], "βšͺ")
1168
  with st.expander(f"{status_emoji} Stage {row['Stage']}: {row['Name']} β€” {row['Status']}"):
1169
  cols = st.columns(2)
1170
  with cols[0]:
1171
+ st.markdown("**DFT Input:**")
1172
+ st.info(row["DFT Input"])
1173
  with cols[1]:
1174
  st.markdown("**AI Output:**")
1175
  st.success(row["AI Output"])
 
1177
  st.markdown("#### Legend")
1178
  leg_cols = st.columns(5)
1179
  for col, (color, label) in zip(leg_cols, [
1180
+ ("🟒", "Done β€” data already computed"),
1181
  ("πŸ”΅", "Ready β€” can run immediately"),
1182
  ("🟑", "Trained β€” model ready"),
1183
  ("🟣", "Predicted β€” AI output available"),
 
1189
  with sib_tabs[6]:
1190
  st.markdown("### AI-Screened Hypothetical Cathodes β€” Stage 3 Output")
1191
  st.markdown(
1192
+ "Once trained on the DFT-validated entries, the formation energy predictor "
1193
  "screens hypothetical compositions. Below are the first 10 candidates including "
1194
  "the two DFT-validated anchor points."
1195
  )
 
1212
  - **X-axis:** Predicted voltage vs Na/Na⁺ (higher β†’ more energy dense)
1213
  - **Y-axis:** Predicted capacity in mAh/g (higher β†’ more charge storage)
1214
  - **Bubble size:** Absolute value of formation energy (larger β†’ more stable)
1215
+ - **Colour:** Red = DFT-verified, Green = AI-predicted
1216
 
1217
  **Top AI candidate:** Naβ‚‚Mn0.5Co0.5Oβ‚„ β€” highest capacity (200 mAh/g) and voltage (3.55 V)
1218
  but lower stability (Eform = βˆ’1.72 eV/atom). Needs DFT validation.
1219
  """)
1220
 
1221
+ st.markdown("#### Next DFT Calculations Recommended")
1222
  next_dft = pd.DataFrame({
1223
  "Structure": [
1224
  "Naβ‚€.β‚ˆβ‚‡β‚…FePOβ‚„ (vacancy)", "Naβ‚€.₇₅FePOβ‚„ (vacancy)",
 
1268
  with v4:
1269
  st.metric("Naβ‚‚MnNiOβ‚„ Capacity", "195 mAh/g", "2 Na per formula unit")
1270
 
1271
+ st.markdown("#### Voltage State Table (DFT computed)")
1272
  st.dataframe(SIB_VOLTAGE, use_container_width=True)
1273
 
1274
  # Simple voltage vs capacity scatter
 
1279
  size=[20] * len(SIB_SCREENED),
1280
  text="Material",
1281
  title="Voltage vs Capacity β€” All Cathode Candidates",
1282
+ color_discrete_map={"DFT": "#FF4757", "AI": "#4ade80"},
1283
  labels={"Predicted Voltage (V)": "Voltage (V vs Na/Na⁺)"},
1284
  )
1285
  fig_vc.update_traces(textposition="top center", textfont_size=8)
 
1305
 
1306
  st.markdown("#### Industrial Vision β€” Battery Foundation Model")
1307
  st.markdown("""
1308
+ The DFT-computed dataset is the **seed** for the Battery Foundation Model:
 
1309
 
1310
  | Input | AI Engine Module | Output |
1311
  |-------|-----------------|--------|
1312
+ | DFT structures | Structure Encoder (GNN) | Latent material representation |
1313
+ | Formation energies | Formation Energy Predictor | Screen 10⁢ candidates |
1314
+ | Bader charges | Charge Distribution Model | Voltage prediction |
1315
+ | Supercell structures | Diffusion Predictor | Na-ion conductivity |
1316
  | MD trajectories | Cycle-Life Predictor | Degradation forecast |
1317
  | Experimental data | Calibration layer | Validated recommendations |
1318
 
1319
+ **Recommended next steps:**
1320
  1. Add vacancy structures (Naβ‚€.β‚ˆβ‚‡β‚…FePOβ‚„, Naβ‚€.₇₅FePOβ‚„)
1321
  2. Run NEB calculations for both materials
1322
  3. Compute elastic tensors and electronic bandgaps
1323
  4. Integrate finite-temperature (300/500/700 K) MD trajectories
1324
+ 5. Expand to full cathode library (10+ materials) for the production platform
1325
  """)
1326
 
1327