{
  "node": {
    "id": "term:coin-cell",
    "type": "Term",
    "label": "Coin cell",
    "properties": {
      "id": "coin-cell",
      "name": "Coin cell",
      "aka": [
        "button cell",
        "CR2032"
      ],
      "section": "topic-chemistries",
      "definition": "A small disc-shaped cell in a crimped steel case. Besides powering watches and key fobs, it is the standard laboratory format for testing a new electrode material against lithium metal.",
      "related": [
        "half-cell",
        "testing",
        "lithium-metal-anode"
      ],
      "url": "https://lemonergy.com/learn/glossary/coin-cell/",
      "mentions": [
        "electrode"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:849",
      "source": "term:coin-cell",
      "target": "topic:topic-chemistries",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:850",
      "source": "term:coin-cell",
      "target": "term:half-cell",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:851",
      "source": "term:coin-cell",
      "target": "term:testing",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:852",
      "source": "term:coin-cell",
      "target": "term:lithium-metal-anode",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/coin-cell/electrode",
      "source": "term:coin-cell",
      "target": "term:electrode",
      "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-chemistries",
      "type": "Topic",
      "label": "Lithium-ion chemistries and cell formats",
      "properties": {
        "id": "topic-chemistries",
        "name": "Lithium-ion chemistries and cell formats",
        "lede": "The electrode materials that define a lithium-ion cell, the crystal structures behind them, and the shapes cells are built in.",
        "context": "Separate chemistry from form factor.",
        "example": "Two cylindrical cells can share dimensions yet differ in cathode, capacity and current limits.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-architecture/",
        "lesson_label": "Open cell architecture"
      }
    },
    {
      "id": "term:half-cell",
      "type": "Term",
      "label": "Half-cell",
      "properties": {
        "id": "half-cell",
        "name": "Half-cell",
        "section": "topic-testing",
        "definition": "A test cell with the electrode under study against lithium metal, so the measured potential is that electrode’s alone. It is how a new material’s capacity and voltage are first measured, usually in coin-cell format.",
        "related": [
          "coin-cell",
          "full-cell",
          "electrode-potential",
          "lithium-metal-anode"
        ],
        "url": "https://lemonergy.com/learn/glossary/half-cell/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "term:testing",
      "type": "Term",
      "label": "Cell testing",
      "properties": {
        "id": "testing",
        "name": "Cell testing",
        "section": "topic-testing",
        "definition": "Measuring a cell’s capacity, resistance, efficiency, rate capability, life and safety under defined conditions. Because every result depends on the conditions, a result without its temperature, current and voltage limits is not a result.",
        "related": [
          "capacity-test",
          "cycler",
          "reference-performance-test",
          "abuse-testing",
          "datasheet"
        ],
        "url": "https://lemonergy.com/learn/glossary/testing/",
        "mentions": [
          "rate-capability"
        ]
      }
    },
    {
      "id": "term:lithium-metal-anode",
      "type": "Term",
      "label": "Lithium metal anode",
      "properties": {
        "id": "lithium-metal-anode",
        "name": "Lithium metal anode",
        "section": "topic-components",
        "definition": "A negative electrode made of lithium metal itself. It stores about ten times more charge per gram than graphite, which is the main attraction of solid-state cells, but it is reactive and prone to uneven deposits.",
        "related": [
          "lithium-metal-battery",
          "dendrite",
          "solid-state-battery",
          "anode-free"
        ],
        "lesson": "fundamentals/solid-state-cell-production/#why",
        "url": "https://lemonergy.com/learn/glossary/lithium-metal-anode/",
        "mentions": [
          "electrode",
          "negative-electrode",
          "graphite"
        ]
      }
    },
    {
      "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"
        ]
      }
    }
  ]
}