{
  "node": {
    "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"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:2275",
      "source": "term:coating",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:2276",
      "source": "term:coating",
      "target": "term:slot-die",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2277",
      "source": "term:coating",
      "target": "term:areal-loading",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2278",
      "source": "term:coating",
      "target": "term:drying",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2279",
      "source": "term:coating",
      "target": "term:electrode-manufacturing",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/coating/slurry",
      "source": "term:coating",
      "target": "term:slurry",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:2281",
      "source": "term:coating",
      "target": "lesson:fundamentals/cell-production/",
      "type": "explainedIn",
      "properties": {
        "sourceFile": "terms.json",
        "url": "https://lemonergy.com/learn/fundamentals/cell-production/#electrodes"
      }
    },
    {
      "id": "edge:2282",
      "source": "term:coating",
      "target": "reference:liu-manufacturing",
      "type": "cites",
      "properties": {
        "sourceFile": "wiki-references.json",
        "scope": "direct technical reference"
      }
    }
  ],
  "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:slot-die",
      "type": "Term",
      "label": "Slot die",
      "properties": {
        "id": "slot-die",
        "name": "Slot die",
        "section": "topic-manufacturing",
        "definition": "A precision coating head that extrudes slurry through a narrow slot onto the foil. It sets the coating width and thickness by pump rate and line speed, and can coat in intermittent patches to leave bare foil for tabs.",
        "related": [
          "coating",
          "areal-loading"
        ],
        "url": "https://lemonergy.com/learn/glossary/slot-die/",
        "mentions": [
          "slurry"
        ]
      }
    },
    {
      "id": "term:areal-loading",
      "type": "Term",
      "label": "Areal loading",
      "properties": {
        "id": "areal-loading",
        "name": "Areal loading",
        "aka": [
          "mass loading",
          "areal capacity"
        ],
        "section": "topic-components",
        "definition": "How much active material, or capacity, an electrode carries per square centimetre of foil, typically 2–5 mAh/cm². Higher loading raises energy density but lengthens the ion path, which limits fast charging.",
        "unit": "mAh/cm², mg/cm²",
        "related": [
          "coating",
          "energy-density",
          "fast-charging",
          "tortuosity"
        ],
        "example": {
          "title": "Convert mass and area",
          "text": "200 mg active material over 20 cm² gives 10 mg/cm² loading. State whether the measurement includes one or both coated sides."
        },
        "url": "https://lemonergy.com/learn/glossary/areal-loading/",
        "mentions": [
          "milliampere-hour",
          "electrode",
          "active-material"
        ]
      }
    },
    {
      "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:electrode-manufacturing",
      "type": "Term",
      "label": "Electrode manufacturing",
      "properties": {
        "id": "electrode-manufacturing",
        "name": "Electrode manufacturing",
        "section": "topic-manufacturing",
        "definition": "The first phase of cell production: mixing a slurry, coating it on foil, drying it, calendering to density and slitting to width. It is run as a continuous roll-to-roll line, and its consistency decides most of the final cell’s quality.",
        "related": [
          "mixing",
          "coating",
          "drying",
          "calendering",
          "slitting",
          "cell-production"
        ],
        "lesson": "fundamentals/cell-production/#electrodes",
        "url": "https://lemonergy.com/learn/glossary/electrode-manufacturing/",
        "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"
        ]
      }
    },
    {
      "id": "lesson:fundamentals/cell-production/",
      "type": "Lesson",
      "label": "Lesson 3 · Cell production",
      "properties": {
        "url": "https://lemonergy.com/learn/fundamentals/cell-production/"
      }
    },
    {
      "id": "reference:liu-manufacturing",
      "type": "Reference",
      "label": "Current and future lithium-ion battery manufacturing",
      "properties": {
        "title": "Current and future lithium-ion battery manufacturing",
        "publisher": "iScience",
        "url": "https://doi.org/10.1016/j.isci.2021.102332",
        "type": "Review article",
        "scope": "Electrode preparation, cell assembly, formation and manufacturing trade-offs.",
        "year": 2021,
        "authors": [
          "Yangtao Liu",
          "Ruihan Zhang",
          "Jun Wang",
          "Yan Wang"
        ],
        "accessed": "2026-10-27"
      }
    }
  ]
}