{
  "node": {
    "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"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:2567",
      "source": "term:stack-pressure",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:2568",
      "source": "term:stack-pressure",
      "target": "term:solid-state-battery",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2569",
      "source": "term:stack-pressure",
      "target": "term:solid-electrolyte",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2570",
      "source": "term:stack-pressure",
      "target": "term:compression-pad",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2571",
      "source": "term:stack-pressure",
      "target": "term:swelling",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/stack-pressure/cell-stack",
      "source": "term:stack-pressure",
      "target": "term:cell-stack",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:2573",
      "source": "term:stack-pressure",
      "target": "lesson:fundamentals/solid-state-cell-production/",
      "type": "explainedIn",
      "properties": {
        "sourceFile": "terms.json",
        "url": "https://lemonergy.com/learn/fundamentals/solid-state-cell-production/#contact"
      }
    }
  ],
  "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:solid-state-battery",
      "type": "Term",
      "label": "Solid-state battery",
      "properties": {
        "id": "solid-state-battery",
        "name": "Solid-state battery",
        "abbr": "ASSB",
        "aka": [
          "all-solid-state battery"
        ],
        "section": "topic-other-chemistries",
        "definition": "A cell whose electrolyte is a solid rather than a liquid. It removes the flammable solvent and may allow a lithium-metal anode, but needs intimate solid–solid contact and, for most chemistries, stack pressure to keep it.",
        "related": [
          "solid-electrolyte",
          "lithium-metal-anode",
          "stack-pressure",
          "semi-solid-battery",
          "sintering"
        ],
        "lesson": "fundamentals/solid-state-cell-production/#why",
        "url": "https://lemonergy.com/learn/glossary/solid-state-battery/",
        "mentions": [
          "anode",
          "electrolyte"
        ]
      }
    },
    {
      "id": "term:solid-electrolyte",
      "type": "Term",
      "label": "Solid electrolyte",
      "properties": {
        "id": "solid-electrolyte",
        "name": "Solid electrolyte",
        "section": "topic-electrolytes",
        "definition": "A solid ion conductor that replaces the liquid electrolyte in an all-solid-state cell. Oxide, sulfide, halide and polymer families each need a different production route.",
        "related": [
          "solid-state-battery",
          "electrolyte",
          "sintering",
          "stack-pressure",
          "ionic-conductivity",
          "superionic-conductor"
        ],
        "lesson": "fundamentals/solid-state-cell-production/#families",
        "url": "https://lemonergy.com/learn/glossary/solid-electrolyte/",
        "mentions": []
      }
    },
    {
      "id": "term:compression-pad",
      "type": "Term",
      "label": "Compression pad",
      "properties": {
        "id": "compression-pad",
        "name": "Compression pad",
        "aka": [
          "foam pad",
          "swelling pad"
        ],
        "section": "topic-pack",
        "definition": "A foam sheet between pouch or prismatic cells that keeps a defined pressure on them as they breathe on charge and swell with age. It also provides some thermal separation between neighbours.",
        "related": [
          "swelling",
          "stack-pressure",
          "thermal-barrier",
          "pouch-cell"
        ],
        "url": "https://lemonergy.com/learn/glossary/compression-pad/",
        "mentions": []
      }
    },
    {
      "id": "term:swelling",
      "type": "Term",
      "label": "Swelling",
      "properties": {
        "id": "swelling",
        "name": "Swelling",
        "section": "topic-aging",
        "definition": "Growth in a cell’s thickness, reversibly as the electrodes expand on charge and irreversibly as gas and SEI accumulate. Packs allow for it with compression pads, and a sudden swell in service is a warning sign.",
        "related": [
          "gas-generation",
          "pouch-cell",
          "silicon-anode",
          "stack-pressure",
          "compression-pad",
          "swelling-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/swelling/",
        "mentions": [
          "sei"
        ]
      }
    },
    {
      "id": "term:cell-stack",
      "type": "Term",
      "label": "Cell stack",
      "properties": {
        "id": "cell-stack",
        "name": "Cell stack",
        "aka": [
          "electrode stack",
          "electrode assembly"
        ],
        "section": "topic-components",
        "definition": "The layered core of a cell — negative electrode, separator, positive electrode, separator, repeated — whether wound into a jelly roll or cut and stacked as sheets. Its layer count and thickness set the capacity, and it is the part held under stack pressure. In flow batteries and fuel cells, ‘stack’ instead means many cells clamped in series.",
        "related": [
          "jelly-roll",
          "stacking",
          "separator",
          "stack-pressure",
          "cell-design",
          "winding"
        ],
        "url": "https://lemonergy.com/learn/glossary/cell-stack/",
        "mentions": [
          "electrode",
          "negative-electrode",
          "positive-electrode"
        ]
      }
    },
    {
      "id": "lesson:fundamentals/solid-state-cell-production/",
      "type": "Lesson",
      "label": "Lesson 3B · Solid-state production",
      "properties": {
        "url": "https://lemonergy.com/learn/fundamentals/solid-state-cell-production/"
      }
    }
  ]
}