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        "id": "loss-of-lithium-inventory",
        "name": "Loss of lithium inventory",
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        "definition": "The degradation mode in which cyclable lithium is consumed by side reactions — SEI growth, plating, electrolyte decomposition — and can no longer shuttle between the electrodes. It is the dominant cause of capacity fade in most lithium-ion cells.",
        "related": [
          "sei",
          "lithium-plating",
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          "loss-of-active-material",
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        "definition": "The loss of charge a cell can store and deliver, for example through lithium locked into the SEI or active material that has cracked out of service.",
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          "loss-of-lithium-inventory",
          "loss-of-active-material",
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        "name": "Electrode",
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        "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.",
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    {
      "id": "term:aging-mechanism",
      "type": "Term",
      "label": "Aging mechanism",
      "properties": {
        "id": "aging-mechanism",
        "name": "Aging mechanism",
        "aka": [
          "degradation mode"
        ],
        "section": "topic-aging",
        "definition": "A specific physical or chemical process that degrades a cell — SEI growth, lithium plating, particle cracking, transition-metal dissolution. Mechanisms are grouped into three modes: loss of lithium inventory, loss of active material and resistance increase.",
        "related": [
          "loss-of-lithium-inventory",
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          "active-material",
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    {
      "id": "reference:edge-degradation",
      "type": "Reference",
      "label": "Lithium ion battery degradation: what you need to know",
      "properties": {
        "title": "Lithium ion battery degradation: what you need to know",
        "publisher": "Physical Chemistry Chemical Physics",
        "url": "https://doi.org/10.1039/D1CP00359C",
        "type": "Review article",
        "scope": "Degradation mechanisms, modes, operational effects and their interactions.",
        "year": 2021,
        "accessed": "2026-10-27"
      }
    }
  ]
}