{
  "id": "zn_i2_cycle",
  "title": "Zn-I₂ 长循环与 CE",
  "domain": "zinc",
  "type": "demo",
  "data_status": "synthetic_demo",
  "not_experimental_data": true,
  "random_seed": 20260935,
  "source_files": [
    "data.csv"
  ],
  "variables_and_units": [
    "cycle",
    "capacity_mAh_g_iodine",
    "ce_percent",
    "charge_capacity_mAh_g_iodine"
  ],
  "test_conditions": "Original Zn-I2 accessible-cathode-capacity model with excess zinc; per gram I2, I2+2e->2I- only, no carbon/extra redox capacity; independent charge/discharge ledger, no CE-product lifetime law",
  "render_options": {
    "recipe": "zn_i2_cycle"
  },
  "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": [
      "I2+2e- -> 2I-; Q_theoretical=2*F/(3.6*M_I2) mAh/g_I2",
      "Q_discharge=175*exp(-cycle/1600)+Normal(0,0.8) mAh/g_I2",
      "CE=99.2+Normal(0,0.1) percent; Q_charge=Q_discharge/(CE/100)"
    ],
    "assumptions": [
      "Only the two-electron iodine couple contributes capacity; carbon/other redox contributions are zero.",
      "Fade represents inaccessible iodine capacity; independent CE loss can be buffered by excess zinc."
    ],
    "parameters": {
      "F_C_mol": 96485.33212,
      "M_I2_g_mol": 253.80894,
      "theoretical_Q_mAh_g_I2": 211.19414583619036,
      "initial_accessible_Q_mAh_g_I2": 175,
      "excess_Zn_counter_inventory": true
    },
    "references": [
      {
        "url": "https://www.nature.com/articles/s41467-020-20331-9",
        "title": "A four-electron Zn-I2 aqueous battery",
        "supports": "Explicit distinction between ordinary two-electron and additional four-electron iodine couples; no reported capacity is copied.",
        "scope": "model_definition_only"
      },
      {
        "url": "https://physics.nist.gov/cgi-bin/cuu/Value?f",
        "title": "NIST CODATA: Faraday constant",
        "supports": "Charge per mole of electrons for theoretical iodine capacity.",
        "scope": "model_definition_only"
      },
      {
        "url": "https://www.nature.com/articles/s41467-022-28381-x",
        "title": "Experimental practices for rechargeable aqueous zinc batteries",
        "supports": "Electrode configuration, inventory and denominator reporting boundaries; no numeric data is copied.",
        "scope": "model_definition_only"
      }
    ],
    "limitations": [
      "All numeric material/rate parameters are original teaching assumptions, not measured or copied paper data.",
      "No four-electron iodine, shuttle mechanism, loading/volume claim or full-cell CE-product life law."
    ],
    "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": 500,
          "sampling": "cycle_scatter"
        }
      ],
      "xlabel": "Cycle",
      "ylabel": "Capacity (mAh g$^{-1}_{iodine}$)"
    },
    {
      "panel": 1,
      "frame_spines": {
        "top": true,
        "right": true,
        "bottom": true,
        "left": true
      },
      "curve_styles": [
        {
          "linestyle": "None",
          "marker": "o",
          "points": 500,
          "sampling": "cycle_scatter"
        }
      ],
      "xlabel": "Cycle",
      "ylabel": "Model capacity retention (%)"
    },
    {
      "panel": 2,
      "frame_spines": {
        "top": true,
        "right": true,
        "bottom": true,
        "left": true
      },
      "curve_styles": [
        {
          "linestyle": "None",
          "marker": "o",
          "points": 500,
          "sampling": "cycle_scatter"
        }
      ],
      "xlabel": "",
      "ylabel": "CE (%)"
    }
  ],
  "curve_style_check": "Cycle quantities marker-only; continuous profiles solid/unmarked; user preference.",
  "retention_reference": {
    "reference_cycle": 1,
    "reference_capacity": 174.64425068346046,
    "formula": "100*Qdis(n)/Qdis(explicit cycle 1)",
    "conditions": "same original teaching model; physical current/rate not simulated or supplied; no acquired cell normalization"
  },
  "current_bundle_entry": "render_existing.py; supplied CSV only; draw() called, never data() or main()"
}