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      "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.",
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        "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.",
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        "definition": "Compressing a solid-state cell from all sides by fluid pressure, at hundreds of megapascals, so sulfide electrolyte particles deform and bond to the electrode particles. It replaces the calendering and wetting steps of a liquid cell.",
        "unit": "MPa",
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        "definition": "A production room whose air is kept extremely dry — dew points around −30 °C to −60 °C — so that no moisture reaches the cell while the electrolyte goes in. Water would react with the salt LiPF₆ to form hydrofluoric acid.",
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      "label": "Halide electrolyte",
      "properties": {
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        "name": "Halide electrolyte",
        "aka": [
          "Li₃YCl₆",
          "Li₃InCl₆"
        ],
        "section": "topic-electrolytes",
        "definition": "A newer solid electrolyte family of lithium metal chlorides and bromides, stable at the high voltage of layered oxide cathodes where sulfides decompose, but unstable against lithium metal. Cells often pair a halide catholyte with a sulfide separator.",
        "related": [
          "sulfide-electrolyte",
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        "mentions": [
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      "id": "term:electrolyte",
      "type": "Term",
      "label": "Electrolyte",
      "properties": {
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        "section": "topic-electrolytes",
        "definition": "The ion-conducting medium between the electrodes. In a liquid-electrolyte cell it fills the pores of both electrodes and the separator, so it is not a separate structural layer.",
        "related": [
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          "carbonate-solvent",
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          "ionic-liquid-electrolyte"
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        "lesson": "fundamentals/cell-architecture/#electrolyte",
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          "title": "Ions and electrons",
          "text": "Electrolyte carries ions between electrodes; the external circuit carries electrons. The two paths serve different roles."
        },
        "url": "https://lemonergy.com/learn/glossary/electrolyte/",
        "mentions": [
          "separator"
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      }
    },
    {
      "id": "lesson:fundamentals/solid-state-cell-production/",
      "type": "Lesson",
      "label": "Lesson 3B · Solid-state production",
      "properties": {
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}