{
  "node": {
    "id": "term:binder-migration",
    "type": "Term",
    "label": "Binder migration",
    "properties": {
      "id": "binder-migration",
      "name": "Binder migration",
      "section": "topic-manufacturing",
      "definition": "Binder carried to the top of the coating by evaporating solvent during fast drying, leaving the foil interface binder-poor. The result is weak adhesion and higher resistance; it is controlled by drying profile and slurry formulation.",
      "related": [
        "drying",
        "binder",
        "delamination",
        "coating"
      ],
      "url": "https://lemonergy.com/learn/glossary/binder-migration/",
      "mentions": [
        "slurry"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:2297",
      "source": "term:binder-migration",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:2298",
      "source": "term:binder-migration",
      "target": "term:drying",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2299",
      "source": "term:binder-migration",
      "target": "term:binder",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2300",
      "source": "term:binder-migration",
      "target": "term:delamination",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2301",
      "source": "term:binder-migration",
      "target": "term:coating",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/binder-migration/slurry",
      "source": "term:binder-migration",
      "target": "term:slurry",
      "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-manufacturing",
      "type": "Topic",
      "label": "Manufacturing",
      "properties": {
        "id": "topic-manufacturing",
        "name": "Manufacturing",
        "lede": "The steps that turn powders and foils into a finished cell, in production order.",
        "context": "Place operations and quality checks in process order.",
        "example": "An electrode can meet coating mass targets but fail adhesion or moisture checks later.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-production/",
        "lesson_label": "Open production"
      }
    },
    {
      "id": "term:drying",
      "type": "Term",
      "label": "Drying",
      "properties": {
        "id": "drying",
        "name": "Drying",
        "section": "topic-manufacturing",
        "definition": "Evaporating the solvent from the wet coating in an oven tens of metres long. Drying too fast drives binder to the surface and weakens adhesion to the foil; it is the most energy-hungry step in the plant.",
        "related": [
          "coating",
          "nmp",
          "solvent-recovery",
          "binder-migration",
          "calendering"
        ],
        "lesson": "fundamentals/cell-production/#electrodes",
        "example": {
          "title": "Identify what the measurement proves",
          "text": "Final coating mass alone does not prove uniform binder distribution or acceptable residual moisture."
        },
        "url": "https://lemonergy.com/learn/glossary/drying/",
        "mentions": [
          "binder"
        ]
      }
    },
    {
      "id": "term:binder",
      "type": "Term",
      "label": "Binder",
      "properties": {
        "id": "binder",
        "name": "Binder",
        "section": "topic-components",
        "definition": "A polymer that holds electrode particles to each other and to the foil — typically PVDF for positive electrodes and CMC with SBR for graphite. It stores no charge, so cell designers use as little as the electrode needs.",
        "related": [
          "active-material",
          "conductive-additive",
          "slurry",
          "pvdf",
          "nmp",
          "paa"
        ],
        "lesson": "fundamentals/cell-architecture/#composite",
        "example": {
          "title": "Balance coating functions",
          "text": "Increasing binder fraction at fixed coating mass leaves less mass for active material and conductive additive. Adhesion and capacity are separate design considerations."
        },
        "url": "https://lemonergy.com/learn/glossary/binder/",
        "mentions": [
          "electrode",
          "graphite",
          "cmc",
          "sbr"
        ]
      }
    },
    {
      "id": "term:delamination",
      "type": "Term",
      "label": "Delamination",
      "properties": {
        "id": "delamination",
        "name": "Delamination",
        "section": "topic-aging",
        "definition": "Separation of the electrode coating from its current collector, or of layers within a cell, which cuts the electronic path to part of the electrode. It is caused by poor adhesion, binder degradation, gas pockets or repeated swelling.",
        "related": [
          "binder-degradation",
          "coating",
          "swelling",
          "loss-of-active-material",
          "electrode-peel-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/delamination/",
        "mentions": [
          "electrode",
          "binder",
          "current-collector",
          "electronic-path"
        ]
      }
    },
    {
      "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": "term:slurry",
      "type": "Term",
      "label": "Slurry",
      "properties": {
        "id": "slurry",
        "name": "Slurry",
        "section": "topic-manufacturing",
        "definition": "The mixture of active material, conductive carbon, binder and solvent that is coated onto a current-collector foil to make an electrode. Positive slurries use NMP as solvent; graphite slurries are water-based.",
        "related": [
          "mixing",
          "coating",
          "nmp",
          "binder",
          "solids-content"
        ],
        "lesson": "fundamentals/cell-production/#electrodes",
        "url": "https://lemonergy.com/learn/glossary/slurry/",
        "mentions": [
          "electrode",
          "active-material",
          "graphite",
          "conductive-additive"
        ]
      }
    }
  ]
}