{
  "node": {
    "id": "term:electronic-conductivity",
    "type": "Term",
    "label": "Electronic conductivity",
    "properties": {
      "id": "electronic-conductivity",
      "name": "Electronic conductivity",
      "section": "topic-electrochemistry",
      "definition": "How readily a material conducts electrons. Current collectors and carbon additives supply it in an electrode because most active materials, LFP above all, conduct electrons poorly; a good electrolyte should have none, or it would self-discharge the cell.",
      "related": [
        "conductive-additive",
        "current-collector",
        "ionic-conductivity",
        "electronic-path"
      ],
      "url": "https://lemonergy.com/learn/glossary/electronic-conductivity/",
      "mentions": [
        "electrode",
        "electrolyte",
        "self-discharge"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:1957",
      "source": "term:electronic-conductivity",
      "target": "topic:topic-electrochemistry",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:1958",
      "source": "term:electronic-conductivity",
      "target": "term:conductive-additive",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1959",
      "source": "term:electronic-conductivity",
      "target": "term:current-collector",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1960",
      "source": "term:electronic-conductivity",
      "target": "term:ionic-conductivity",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1961",
      "source": "term:electronic-conductivity",
      "target": "term:electronic-path",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/electronic-conductivity/electrode",
      "source": "term:electronic-conductivity",
      "target": "term:electrode",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/electronic-conductivity/electrolyte",
      "source": "term:electronic-conductivity",
      "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/electronic-conductivity/self-discharge",
      "source": "term:electronic-conductivity",
      "target": "term:self-discharge",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "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:conductive-additive",
      "type": "Term",
      "label": "Conductive additive",
      "properties": {
        "id": "conductive-additive",
        "name": "Conductive additive",
        "aka": [
          "carbon black",
          "conductive carbon"
        ],
        "section": "topic-components",
        "definition": "Fine carbon, such as carbon black or carbon nanotubes, added in small amounts to an electrode so that electrons can reach every active particle. Many active materials conduct electrons poorly on their own.",
        "related": [
          "active-material",
          "binder",
          "electronic-conductivity",
          "slurry"
        ],
        "lesson": "fundamentals/cell-architecture/#composite",
        "example": {
          "title": "Distribution matters",
          "text": "Two coatings with the same additive mass can have different electronic connectivity if the additive is distributed differently."
        },
        "url": "https://lemonergy.com/learn/glossary/conductive-additive/",
        "mentions": [
          "electrode",
          "carbon-nanotube"
        ]
      }
    },
    {
      "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:ionic-conductivity",
      "type": "Term",
      "label": "Ionic conductivity",
      "properties": {
        "id": "ionic-conductivity",
        "name": "Ionic conductivity",
        "abbr": "σ",
        "section": "topic-electrochemistry",
        "definition": "How readily an electrolyte carries ions, in siemens per centimetre. Liquid carbonate electrolytes reach about 10 mS/cm at room temperature; the best sulfide solid electrolytes match that, while polymers fall far short unless heated.",
        "unit": "mS/cm",
        "related": [
          "electrolyte",
          "solid-electrolyte",
          "transference-number",
          "siemens"
        ],
        "url": "https://lemonergy.com/learn/glossary/ionic-conductivity/",
        "mentions": []
      }
    },
    {
      "id": "term:electronic-path",
      "type": "Term",
      "label": "Electronic path",
      "properties": {
        "id": "electronic-path",
        "name": "Electronic path",
        "section": "topic-electrochemistry",
        "definition": "The route electrons take during operation: from active particle through carbon additive to the foil, out through the tab and the external circuit, and back in at the other electrode. Everything on it adds resistance.",
        "related": [
          "ionic-path",
          "current-collector",
          "conductive-additive",
          "internal-resistance"
        ],
        "lesson": "fundamentals/cell-anatomy/#discharge",
        "url": "https://lemonergy.com/learn/glossary/electronic-path/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "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"
        ]
      }
    },
    {
      "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:self-discharge",
      "type": "Term",
      "label": "Self-discharge",
      "properties": {
        "id": "self-discharge",
        "name": "Self-discharge",
        "section": "topic-charging",
        "definition": "The slow loss of stored charge while a cell is not in use. An unexpected rise can signal a leakage path or a soft internal short.",
        "unit": "%/month",
        "related": [
          "internal-short-circuit",
          "calendar-aging",
          "k-value",
          "calendar-life",
          "self-discharge-test"
        ],
        "lesson": "fundamentals/battery-aging/#check-yourself",
        "url": "https://lemonergy.com/learn/glossary/self-discharge/",
        "mentions": []
      }
    }
  ]
}