{
  "id": "na_metal_ce",
  "title": "钠金属逐圈 CE",
  "domain": "alkali",
  "type": "demo",
  "data_status": "synthetic_demo",
  "not_experimental_data": true,
  "random_seed": 20260930,
  "source_files": [
    "data.csv"
  ],
  "variables_and_units": [
    "cycle",
    "q_plating_mAh_cm2",
    "q_stripping_mAh_cm2",
    "ce_percent"
  ],
  "test_conditions": "Original Na|Cu teaching charge ledger; 1 mA/cm2, 1 mAh/cm2 plated, nominal 1 V vs Na/Na+ stripping endpoint; no voltage trace or experimental protocol validation",
  "render_options": {
    "recipe": "na_metal_ce"
  },
  "reproduce": "python render_existing.py --output new-result",
  "creator": "VoltPeer maintainers",
  "license": "MIT",
  "generator_version": "1.6",
  "limitations": "Declared teaching model only; no measured device, mechanism or material certification. This generator does not adapt experimental data.",
  "scientific_basis": {
    "schema_version": 1,
    "model_class": "phenomenological_model",
    "data_origin": "original_synthetic",
    "equations": [
      "Q_plating=1 mAh/cm2; Q_stripping=Q_plating*(1-loss_fraction)",
      "loss_fraction=0.016-0.009*(1-exp(-cycle/25))+Uniform(-0.0011,0.0011)+declared local loss event",
      "CE_percent=100*Q_stripping/Q_plating"
    ],
    "assumptions": [
      "Each teaching cycle has positive irreversible charge loss; no negative-capacity or >100% CE fixture.",
      "Fresh plating charge is available each cycle; CE does not predict a full-cell life."
    ],
    "parameters": {
      "nominal_current_mA_cm2": 1,
      "plating_capacity_mAh_cm2": 1,
      "cycles": 200,
      "stripping_endpoint_V": 1.0,
      "reference": "Na/Na+",
      "event_cycles": [
        146,
        151
      ],
      "event_additional_loss_fraction": [
        0.002,
        0.013
      ]
    },
    "references": [
      {
        "url": "https://www.nature.com/articles/s41560-020-0648-z",
        "title": "Understanding Coulombic efficiency in lithium metal batteries",
        "supports": "Charge-ratio definitions and protocol limitations only; not calibration of this Na or Zn model.",
        "scope": "model_definition_only"
      }
    ],
    "limitations": [
      "All numeric material/rate parameters are original teaching assumptions, not measured or copied paper data.",
      "Only charge accounting is modeled; no nucleation, voltage trace, gas evolution or validated stripping protocol."
    ],
    "validation_scope": "Original teaching-model equations, charge/energy/units and declared boundaries only; no experimental or material certification."
  },
  "actual_artist_checks": [
    {
      "panel": 0,
      "frame_spines": {
        "top": true,
        "right": true,
        "bottom": true,
        "left": true
      },
      "curve_styles": [
        {
          "linestyle": "None",
          "marker": "o",
          "points": 200,
          "sampling": "cycle_scatter"
        }
      ],
      "xlabel": "Cycle",
      "ylabel": "Coulombic efficiency (%)"
    }
  ],
  "curve_style_check": "Cycle quantities marker-only; continuous profiles solid/unmarked; user preference.",
  "current_bundle_entry": "render_existing.py; supplied CSV only; draw() called, never data() or main()"
}