{
  "node": {
    "id": "term:burr",
    "type": "Term",
    "label": "Burr",
    "properties": {
      "id": "burr",
      "name": "Burr",
      "aka": [
        "burrs",
        "edge burr",
        "slitting burr",
        "slitter burr"
      ],
      "section": "topic-manufacturing",
      "definition": "A sharp raised lip of foil, or a loose flake of coating, left at a cut electrode edge by slitting or notching. The separator is only about 10–25 µm thick, so a burr of similar height can pierce it under stack pressure and cause an internal short circuit; edges are therefore inspected and worn knives replaced before burrs grow.",
      "related": [
        "slitting",
        "notching",
        "internal-short-circuit",
        "separator",
        "laser-cutting"
      ],
      "url": "https://lemonergy.com/learn/glossary/burr/",
      "mentions": [
        "electrode",
        "coating",
        "stack-pressure",
        "short-circuit"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:4832",
      "source": "term:burr",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4833",
      "source": "term:burr",
      "target": "term:slitting",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4834",
      "source": "term:burr",
      "target": "term:notching",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4835",
      "source": "term:burr",
      "target": "term:internal-short-circuit",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4836",
      "source": "term:burr",
      "target": "term:separator",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4837",
      "source": "term:burr",
      "target": "term:laser-cutting",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/burr/electrode",
      "source": "term:burr",
      "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/burr/coating",
      "source": "term:burr",
      "target": "term:coating",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/burr/stack-pressure",
      "source": "term:burr",
      "target": "term:stack-pressure",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/burr/short-circuit",
      "source": "term:burr",
      "target": "term:short-circuit",
      "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:slitting",
      "type": "Term",
      "label": "Slitting",
      "properties": {
        "id": "slitting",
        "name": "Slitting",
        "section": "topic-manufacturing",
        "definition": "Cutting the wide coated roll into the narrow strips a cell needs, with rotary knives. A clean edge matters: burrs can pierce the separator and cause an internal short.",
        "related": [
          "notching",
          "internal-short-circuit",
          "calendering"
        ],
        "lesson": "fundamentals/cell-production/#electrodes",
        "example": {
          "title": "Check width and edges",
          "text": "Cutting a coated roll to width creates new edges. Width accuracy and edge quality are separate checks."
        },
        "url": "https://lemonergy.com/learn/glossary/slitting/",
        "mentions": [
          "separator",
          "burr"
        ]
      }
    },
    {
      "id": "term:notching",
      "type": "Term",
      "label": "Notching",
      "properties": {
        "id": "notching",
        "name": "Notching",
        "section": "topic-manufacturing",
        "definition": "Cutting the tab shape and the electrode sheet outline from the slit strip, mechanically or by laser, before stacking. Laser notching has no tool wear but must avoid heat damage at the edge.",
        "related": [
          "slitting",
          "stacking",
          "tab",
          "laser-cutting"
        ],
        "lesson": "fundamentals/cell-production/#assembly",
        "url": "https://lemonergy.com/learn/glossary/notching/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "term:internal-short-circuit",
      "type": "Term",
      "label": "Internal short circuit",
      "properties": {
        "id": "internal-short-circuit",
        "name": "Internal short circuit",
        "abbr": "ISC",
        "section": "topic-safety",
        "definition": "An unintended electronic path between the electrodes inside a cell — through a metal particle, a burr, a damaged separator or lithium deposits. It discharges the cell internally and turns its energy into local heat.",
        "related": [
          "thermal-runaway",
          "dendrite",
          "separator",
          "external-short-circuit",
          "self-discharge",
          "internal-short-trigger-device"
        ],
        "lesson": "fundamentals/cell-anatomy/#short-circuit",
        "url": "https://lemonergy.com/learn/glossary/internal-short-circuit/",
        "mentions": [
          "electronic-path",
          "burr",
          "metal-particle-contamination"
        ]
      }
    },
    {
      "id": "term:separator",
      "type": "Term",
      "label": "Separator",
      "properties": {
        "id": "separator",
        "name": "Separator",
        "section": "topic-electrolytes",
        "definition": "A porous, electronically insulating film between the electrodes. Electrons cannot cross it; ions move through the electrolyte in its pores.",
        "related": [
          "electrolyte",
          "ceramic-coated-separator",
          "separator-shutdown",
          "internal-short-circuit",
          "porosity"
        ],
        "lesson": "fundamentals/cell-architecture/#separator",
        "example": {
          "title": "Different conduction paths",
          "text": "A separator prevents direct electronic contact while permitting ionic transport through its electrolyte-filled structure."
        },
        "url": "https://lemonergy.com/learn/glossary/separator/",
        "mentions": []
      }
    },
    {
      "id": "term:laser-cutting",
      "type": "Term",
      "label": "Laser cutting",
      "properties": {
        "id": "laser-cutting",
        "name": "Laser cutting",
        "section": "topic-manufacturing",
        "definition": "Cutting electrodes with a pulsed laser instead of a die, used for notching and for separating sheets. It changes shape without a new tool, at the cost of a heat-affected zone that must be kept small.",
        "related": [
          "notching",
          "slitting"
        ],
        "url": "https://lemonergy.com/learn/glossary/laser-cutting/",
        "mentions": []
      }
    },
    {
      "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: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:stack-pressure",
      "type": "Term",
      "label": "Stack pressure",
      "properties": {
        "id": "stack-pressure",
        "name": "Stack pressure",
        "section": "topic-manufacturing",
        "definition": "Pressure applied to a cell stack, in production or in use, to keep its layers in contact. Solid-state cells depend on it, because ions can only cross where two solids touch.",
        "unit": "MPa",
        "related": [
          "solid-state-battery",
          "solid-electrolyte",
          "compression-pad",
          "swelling"
        ],
        "lesson": "fundamentals/solid-state-cell-production/#contact",
        "url": "https://lemonergy.com/learn/glossary/stack-pressure/",
        "mentions": [
          "cell-stack"
        ]
      }
    },
    {
      "id": "term:short-circuit",
      "type": "Term",
      "label": "Short circuit",
      "properties": {
        "id": "short-circuit",
        "name": "Short circuit",
        "section": "topic-units",
        "definition": "A connection of negligible resistance between two points that should be separated, so current is limited only by the source. For a battery it may be external, across the terminals, or internal, between the electrodes inside the cell.",
        "related": [
          "external-short-circuit",
          "internal-short-circuit",
          "fuse",
          "ohms-law"
        ],
        "lesson": "fundamentals/cell-anatomy/#short-circuit",
        "url": "https://lemonergy.com/learn/glossary/short-circuit/",
        "mentions": []
      }
    }
  ]
}