{
  "node": {
    "id": "term:superionic-conductor",
    "type": "Term",
    "label": "Superionic conductor",
    "properties": {
      "id": "superionic-conductor",
      "name": "Superionic conductor",
      "aka": [
        "fast-ion conductor",
        "solid ionic conductor"
      ],
      "section": "topic-electrolytes",
      "definition": "A solid in which one ion species moves almost as freely as in a liquid, reaching the order of 1 mS/cm or more, while the rest of the lattice stays rigid. α-silver iodide above 147 °C is the classic case; Li₁₀GeP₂S₁₂ reaches about 12 mS/cm at room temperature. Such materials are the basis of solid electrolytes.",
      "related": [
        "solid-electrolyte",
        "ionic-conductivity",
        "sulfide-electrolyte",
        "nasicon",
        "llzo",
        "solid-state-battery"
      ],
      "url": "https://lemonergy.com/learn/glossary/superionic-conductor/",
      "mentions": []
    }
  },
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      "source": "term:superionic-conductor",
      "target": "topic:topic-electrolytes",
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      "id": "edge:5734",
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      "target": "term:solid-electrolyte",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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      "id": "edge:5735",
      "source": "term:superionic-conductor",
      "target": "term:ionic-conductivity",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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      "id": "edge:5736",
      "source": "term:superionic-conductor",
      "target": "term:sulfide-electrolyte",
      "type": "relatedTo",
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        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5737",
      "source": "term:superionic-conductor",
      "target": "term:nasicon",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
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      "id": "edge:5738",
      "source": "term:superionic-conductor",
      "target": "term:llzo",
      "type": "relatedTo",
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        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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      "id": "edge:5739",
      "source": "term:superionic-conductor",
      "target": "term:solid-state-battery",
      "type": "relatedTo",
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        "meaning": "Related context; not a causal claim"
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    {
      "id": "topic:topic-electrolytes",
      "type": "Topic",
      "label": "Electrolytes and separators",
      "properties": {
        "id": "topic-electrolytes",
        "name": "Electrolytes and separators",
        "lede": "What sits between the electrodes: liquid, gel and solid electrolytes, their salts, solvents and additives, and the separator that keeps the electrodes apart.",
        "context": "Connect transport with electronic isolation.",
        "example": "Greater liquid uptake may improve wetting while changing mechanical behavior. Several properties define separator performance.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/",
        "lesson_label": "Open cell anatomy"
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      "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.",
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          "solid-state-battery",
          "electrolyte",
          "sintering",
          "stack-pressure",
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          "superionic-conductor"
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        "url": "https://lemonergy.com/learn/glossary/solid-electrolyte/",
        "mentions": []
      }
    },
    {
      "id": "term:ionic-conductivity",
      "type": "Term",
      "label": "Ionic conductivity",
      "properties": {
        "id": "ionic-conductivity",
        "name": "Ionic conductivity",
        "abbr": "σ",
        "section": "topic-electrochemistry",
        "definition": "How readily an electrolyte carries ions, in siemens per centimetre. Liquid carbonate electrolytes reach about 10 mS/cm at room temperature; the best sulfide solid electrolytes match that, while polymers fall far short unless heated.",
        "unit": "mS/cm",
        "related": [
          "electrolyte",
          "solid-electrolyte",
          "transference-number",
          "siemens"
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        "url": "https://lemonergy.com/learn/glossary/ionic-conductivity/",
        "mentions": []
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    {
      "id": "term:sulfide-electrolyte",
      "type": "Term",
      "label": "Sulfide electrolyte",
      "properties": {
        "id": "sulfide-electrolyte",
        "name": "Sulfide electrolyte",
        "aka": [
          "LPSCl",
          "argyrodite",
          "LGPS"
        ],
        "section": "topic-electrolytes",
        "definition": "The solid electrolyte family with the highest conductivity — argyrodites such as Li₆PS₅Cl match liquids, and LGPS exceeds them — and soft enough to be pressed rather than sintered. Their weakness is reaction with moisture, which releases hydrogen sulfide.",
        "related": [
          "solid-electrolyte",
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        "url": "https://lemonergy.com/learn/glossary/sulfide-electrolyte/",
        "mentions": [
          "electrolyte"
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    },
    {
      "id": "term:nasicon",
      "type": "Term",
      "label": "NASICON electrolyte",
      "properties": {
        "id": "nasicon",
        "name": "NASICON electrolyte",
        "aka": [
          "LATP",
          "LAGP"
        ],
        "section": "topic-electrolytes",
        "definition": "Oxide solid electrolytes with the sodium-superionic-conductor structure, such as lithium aluminium titanium phosphate. They are stable in air and against high-voltage cathodes but are reduced by lithium metal, so they need a protective interlayer.",
        "related": [
          "llzo",
          "solid-electrolyte",
          "lithium-metal-anode"
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        "mentions": []
      }
    },
    {
      "id": "term:llzo",
      "type": "Term",
      "label": "LLZO",
      "properties": {
        "id": "llzo",
        "name": "LLZO",
        "aka": [
          "lithium lanthanum zirconium oxide",
          "garnet electrolyte"
        ],
        "section": "topic-electrolytes",
        "definition": "The leading oxide solid electrolyte, a garnet-structured Li₇La₃Zr₂O₁₂ stable against lithium metal. It conducts about 1 mS/cm but is brittle and needs sintering above 1000 °C, which drives its production route.",
        "related": [
          "solid-electrolyte",
          "sintering",
          "sulfide-electrolyte",
          "lithium-metal-anode"
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        "lesson": "fundamentals/solid-state-cell-production/#families",
        "url": "https://lemonergy.com/learn/glossary/llzo/",
        "mentions": [
          "electrolyte"
        ]
      }
    },
    {
      "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"
        ]
      }
    }
  ]
}