{
  "node": {
    "id": "term:lifsi",
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    "label": "Lithium bis(fluorosulfonyl)imide",
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      "abbr": "LiFSI",
      "section": "topic-electrolytes",
      "definition": "A salt with higher conductivity and far better thermal and moisture stability than LiPF₆, increasingly blended with it or used in fast-charge and lithium-metal electrolytes. Its drawback is corrosion of aluminium at high voltage unless LiPF₆ is also present.",
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        "lipf6",
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      "id": "topic:topic-electrolytes",
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      "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.",
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        "lesson_label": "Open cell anatomy"
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      "id": "term:lipf6",
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      "label": "Lithium hexafluorophosphate",
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        "name": "Lithium hexafluorophosphate",
        "abbr": "LiPF₆",
        "section": "topic-electrolytes",
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      "id": "term:lithium-salt",
      "type": "Term",
      "label": "Lithium salt",
      "properties": {
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        "name": "Lithium salt",
        "aka": [
          "LiPF₆",
          "LiFSI"
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        "section": "topic-electrolytes",
        "definition": "The dissolved salt that supplies the mobile lithium ions in a liquid electrolyte, almost always lithium hexafluorophosphate, LiPF₆, at about one mole per litre. It reacts with traces of water to form hydrofluoric acid, which is why cells are filled in a dry room.",
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      "id": "term:litfsi",
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      "label": "Lithium bis(trifluoromethanesulfonyl)imide",
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        "abbr": "LiTFSI",
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        "definition": "A very stable imide salt used in polymer and solid-state electrolytes and in research cells. Like LiFSI it attacks aluminium current collectors above about 3.7 V, which keeps it out of mainstream liquid cells.",
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      "id": "term:fast-charging",
      "type": "Term",
      "label": "Fast charging",
      "properties": {
        "id": "fast-charging",
        "name": "Fast charging",
        "section": "topic-charging",
        "definition": "Charging intended to replenish a specified amount of energy or state of charge in a short time. There is no universal C-rate threshold: performance depends on cell chemistry, temperature, starting state and power limits. High current can increase heating and lithium-plating risk, requiring appropriate limits.",
        "related": [
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    {
      "id": "reference:xu-electrolytes",
      "type": "Reference",
      "label": "Electrolytes and Interphases in Li-Ion Batteries and Beyond",
      "properties": {
        "title": "Electrolytes and Interphases in Li-Ion Batteries and Beyond",
        "publisher": "Chemical Reviews",
        "url": "https://doi.org/10.1021/cr500003w",
        "type": "Review article",
        "scope": "Electrolyte salts, solvents, additives and electrode interphases.",
        "year": 2014,
        "authors": [
          "Kang Xu"
        ],
        "accessed": "2026-10-27"
      }
    }
  ]
}