{
  "node": {
    "id": "term:electrode",
    "type": "Term",
    "label": "Electrode",
    "properties": {
      "id": "electrode",
      "name": "Electrode",
      "section": "topic-components",
      "definition": "A solid conductor where the cell’s reaction happens, in contact with the electrolyte. A lithium-ion cell has a negative electrode and a positive electrode, each a porous coating on a metal foil.",
      "related": [
        "negative-electrode",
        "positive-electrode",
        "porous-electrode",
        "current-collector"
      ],
      "lesson": "fundamentals/cell-anatomy/#components",
      "example": {
        "title": "Two transport paths",
        "text": "Electrons need connected solid paths to the collector; ions need electrolyte paths to reaction sites. More of one constituent displaces others at fixed volume."
      },
      "url": "https://lemonergy.com/learn/glossary/electrode/",
      "mentions": [
        "electrolyte",
        "coating"
      ]
    }
  },
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      "source": "term:electrode",
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    {
      "id": "edge:319",
      "source": "term:electrode",
      "target": "term:negative-electrode",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:320",
      "source": "term:electrode",
      "target": "term:positive-electrode",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:321",
      "source": "term:electrode",
      "target": "term:porous-electrode",
      "type": "relatedTo",
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        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:322",
      "source": "term:electrode",
      "target": "term:current-collector",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/electrode/electrolyte",
      "source": "term:electrode",
      "target": "term:electrolyte",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/electrode/coating",
      "source": "term:electrode",
      "target": "term:coating",
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      "id": "edge:325",
      "source": "term:electrode",
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      "type": "explainedIn",
      "properties": {
        "sourceFile": "terms.json",
        "url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/#components"
      }
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    {
      "id": "topic:topic-components",
      "type": "Topic",
      "label": "Cell components and electrode materials",
      "properties": {
        "id": "topic-components",
        "name": "Cell components and electrode materials",
        "lede": "What a cell is physically made of — active materials, binders, additives, foils and tabs — and how its electrodes are put together.",
        "context": "Connect each material with its function.",
        "example": "Electrons travel through additive, foil and tab; ions use electrolyte and separator pathways.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/",
        "lesson_label": "Open cell anatomy"
      }
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    {
      "id": "term:negative-electrode",
      "type": "Term",
      "label": "Negative electrode",
      "properties": {
        "id": "negative-electrode",
        "name": "Negative electrode",
        "section": "topic-components",
        "definition": "The electrode at the lower potential, usually graphite on copper foil in a lithium-ion cell. It holds the lithium when the cell is charged and releases it on discharge, and industry calls it the anode.",
        "related": [
          "anode",
          "graphite",
          "positive-electrode",
          "copper-foil"
        ],
        "lesson": "fundamentals/cell-anatomy/#anode-cathode",
        "example": {
          "title": "Keep the polarity name",
          "text": "Graphite remains the negative electrode during charge and discharge, while the anode/cathode reaction labels change with operating direction."
        },
        "url": "https://lemonergy.com/learn/glossary/negative-electrode/",
        "mentions": [
          "electrode"
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    {
      "id": "term:positive-electrode",
      "type": "Term",
      "label": "Positive electrode",
      "properties": {
        "id": "positive-electrode",
        "name": "Positive electrode",
        "section": "topic-components",
        "definition": "The electrode at the higher potential: a lithium metal oxide or phosphate coated on aluminium foil. It is the lithium source when a cell is built, and industry calls it the cathode.",
        "related": [
          "cathode",
          "cathode-active-material",
          "negative-electrode",
          "aluminium-foil"
        ],
        "lesson": "fundamentals/cell-anatomy/#anode-cathode",
        "example": {
          "title": "Polarity and reaction",
          "text": "The positive electrode retains its polarity label while its electrochemical reaction reverses between charge and discharge."
        },
        "url": "https://lemonergy.com/learn/glossary/positive-electrode/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "term:porous-electrode",
      "type": "Term",
      "label": "Porous electrode",
      "properties": {
        "id": "porous-electrode",
        "name": "Porous electrode",
        "section": "topic-components",
        "definition": "An electrode made of active-material particles, conductive additive and binder with electrolyte-filled pores between them. Its large internal surface is where the reaction happens.",
        "related": [
          "porosity",
          "tortuosity",
          "active-material",
          "porous-electrode-theory",
          "3d-electrode"
        ],
        "lesson": "fundamentals/cell-architecture/#porosity",
        "url": "https://lemonergy.com/learn/glossary/porous-electrode/",
        "mentions": [
          "electrode",
          "binder",
          "conductive-additive"
        ]
      }
    },
    {
      "id": "term:current-collector",
      "type": "Term",
      "label": "Current collector",
      "properties": {
        "id": "current-collector",
        "name": "Current collector",
        "section": "topic-components",
        "definition": "The thin metal foil that carries electrons between an electrode and the external circuit — usually copper on the negative side and aluminium on the positive side.",
        "related": [
          "copper-foil",
          "aluminium-foil",
          "tab",
          "electronic-path"
        ],
        "lesson": "fundamentals/cell-anatomy/#components",
        "example": {
          "title": "Follow current to a tab",
          "text": "Current converges through foil toward the tab. The collector contributes mass and resistance without being the principal active material."
        },
        "url": "https://lemonergy.com/learn/glossary/current-collector/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "term:electrolyte",
      "type": "Term",
      "label": "Electrolyte",
      "properties": {
        "id": "electrolyte",
        "name": "Electrolyte",
        "section": "topic-electrolytes",
        "definition": "The ion-conducting medium between the electrodes. In a liquid-electrolyte cell it fills the pores of both electrodes and the separator, so it is not a separate structural layer.",
        "related": [
          "lithium-salt",
          "carbonate-solvent",
          "electrolyte-additive",
          "ionic-conductivity",
          "solid-electrolyte",
          "ionic-liquid-electrolyte"
        ],
        "lesson": "fundamentals/cell-architecture/#electrolyte",
        "example": {
          "title": "Ions and electrons",
          "text": "Electrolyte carries ions between electrodes; the external circuit carries electrons. The two paths serve different roles."
        },
        "url": "https://lemonergy.com/learn/glossary/electrolyte/",
        "mentions": [
          "separator"
        ]
      }
    },
    {
      "id": "term:coating",
      "type": "Term",
      "label": "Coating",
      "properties": {
        "id": "coating",
        "name": "Coating",
        "section": "topic-manufacturing",
        "definition": "Applying slurry to the moving foil at a controlled wet thickness, usually with a slot die, often on both sides. Coating weight per area must be held within about one percent across the web, because every downstream property depends on it.",
        "related": [
          "slot-die",
          "areal-loading",
          "drying",
          "electrode-manufacturing"
        ],
        "lesson": "fundamentals/cell-production/#electrodes",
        "example": {
          "title": "Wet and dry thickness differ",
          "text": "Wet coating includes solvent. Dry thickness also depends on retained solids and resulting structure."
        },
        "url": "https://lemonergy.com/learn/glossary/coating/",
        "mentions": [
          "slurry"
        ]
      }
    },
    {
      "id": "lesson:fundamentals/cell-anatomy/",
      "type": "Lesson",
      "label": "Lesson 1 · Cell anatomy",
      "properties": {
        "url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/"
      }
    }
  ]
}