{
  "node": {
    "id": "term:faradays-constant",
    "type": "Term",
    "label": "Faraday’s constant",
    "properties": {
      "id": "faradays-constant",
      "name": "Faraday’s constant",
      "abbr": "F",
      "section": "topic-electrochemistry",
      "definition": "The charge carried by one mole of electrons, 96 485 coulombs or 26.8 ampere-hours. It links the moles of lithium that move in a reaction to the ampere-hours a cell delivers.",
      "unit": "C/mol",
      "related": [
        "faradays-law",
        "theoretical-capacity",
        "coulomb",
        "ampere-hour"
      ],
      "url": "https://lemonergy.com/learn/glossary/faradays-constant/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:1879",
      "source": "term:faradays-constant",
      "target": "topic:topic-electrochemistry",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:1880",
      "source": "term:faradays-constant",
      "target": "term:faradays-law",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1881",
      "source": "term:faradays-constant",
      "target": "term:theoretical-capacity",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1882",
      "source": "term:faradays-constant",
      "target": "term:coulomb",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1883",
      "source": "term:faradays-constant",
      "target": "term:ampere-hour",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1884",
      "source": "term:faradays-constant",
      "target": "reference:bipm-si",
      "type": "cites",
      "properties": {
        "sourceFile": "wiki-references.json",
        "scope": "direct technical reference"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-electrochemistry",
      "type": "Topic",
      "label": "Electrochemistry fundamentals",
      "properties": {
        "id": "topic-electrochemistry",
        "name": "Electrochemistry fundamentals",
        "lede": "The reactions and potentials that make a cell a battery.",
        "context": "Connect reaction sites and transport paths.",
        "example": "A circuit can predict terminal voltage while leaving electrode potentials and reaction kinetics unresolved.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/",
        "lesson_label": "Open cell anatomy"
      }
    },
    {
      "id": "term:faradays-law",
      "type": "Term",
      "label": "Faraday’s law of electrolysis",
      "properties": {
        "id": "faradays-law",
        "name": "Faraday’s law of electrolysis",
        "section": "topic-electrochemistry",
        "definition": "The amount of substance transformed at an electrode is proportional to the charge passed: one mole of electrons per Faraday. It converts a material’s formula into its theoretical capacity in mAh/g.",
        "formula": "m = Q·M / (n·F)",
        "related": [
          "faradays-constant",
          "theoretical-capacity",
          "specific-capacity"
        ],
        "example": {
          "title": "Convert charge to ideal deposited mass",
          "text": "For a hypothetical one-electron species with molar mass 50 g/mol, transferring 1 Ah = 3600 C corresponds to about 1.87 g at 100% Faradaic efficiency. Side reactions reduce the intended deposited amount."
        },
        "url": "https://lemonergy.com/learn/glossary/faradays-law/",
        "mentions": [
          "milliampere-hour",
          "electrode"
        ]
      }
    },
    {
      "id": "term:theoretical-capacity",
      "type": "Term",
      "label": "Theoretical capacity",
      "properties": {
        "id": "theoretical-capacity",
        "name": "Theoretical capacity",
        "section": "topic-ratings",
        "definition": "The capacity a material would deliver if every available lithium ion took part, computed from Faraday’s law and the molar mass. Practical capacity is lower because not all the lithium can be removed reversibly.",
        "formula": "Q = n·F / (3.6·M)",
        "unit": "mAh/g",
        "related": [
          "specific-capacity",
          "faradays-law",
          "faradays-constant"
        ],
        "example": {
          "title": "Compute a one-electron capacity",
          "text": "For an illustrative active material with molar mass 100 g/mol and one transferred electron per formula unit, nF/(3.6M) is about 268 mAh/g. Inactive material and incomplete utilization reduce the cell-level value."
        },
        "url": "https://lemonergy.com/learn/glossary/theoretical-capacity/",
        "mentions": []
      }
    },
    {
      "id": "term:coulomb",
      "type": "Term",
      "label": "Coulomb",
      "properties": {
        "id": "coulomb",
        "name": "Coulomb",
        "abbr": "C",
        "section": "topic-units",
        "definition": "The SI unit of electric charge; one ampere flowing for one second. Battery engineers prefer the ampere-hour, which is 3600 coulombs, because cells deliver their charge over hours.",
        "unit": "C",
        "related": [
          "ampere-hour",
          "faradays-constant"
        ],
        "url": "https://lemonergy.com/learn/glossary/coulomb/",
        "mentions": [
          "ampere",
          "electric-charge"
        ]
      }
    },
    {
      "id": "term:ampere-hour",
      "type": "Term",
      "label": "Ampere-hour",
      "properties": {
        "id": "ampere-hour",
        "name": "Ampere-hour",
        "abbr": "Ah",
        "aka": [
          "amp-hour"
        ],
        "section": "topic-units",
        "definition": "A unit of electric charge: one ampere flowing for one hour, or 3600 coulombs. Battery capacity is rated in ampere-hours, which measure charge, not energy.",
        "unit": "Ah",
        "related": [
          "nominal-capacity",
          "milliampere-hour",
          "watt-hour"
        ],
        "lesson": "fundamentals/capacity-and-c-rate/#nominal-capacity",
        "url": "https://lemonergy.com/learn/glossary/ampere-hour/",
        "mentions": [
          "ampere",
          "electric-charge"
        ]
      }
    },
    {
      "id": "reference:bipm-si",
      "type": "Reference",
      "label": "The International System of Units (SI), 9th edition",
      "properties": {
        "title": "The International System of Units (SI), 9th edition",
        "publisher": "Bureau International des Poids et Mesures",
        "url": "https://doi.org/10.59161/AUEZ1291",
        "type": "Metrology reference",
        "scope": "Definitions of SI units and coherent derived units; 2026 revision.",
        "year": 2026,
        "accessed": "2026-10-27"
      }
    }
  ]
}