{
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    "type": "Term",
    "label": "Ion",
    "properties": {
      "id": "ion",
      "name": "Ion",
      "section": "topic-electrochemistry",
      "definition": "An atom or molecule carrying a net charge: a cation such as Li⁺ is positive, an anion such as PF₆⁻ negative. Ions carry current through the electrolyte, electrons carry it through the solids and the external circuit.",
      "related": [
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        "ionic-path",
        "transference-number",
        "migration"
      ],
      "url": "https://lemonergy.com/learn/glossary/ion/",
      "mentions": []
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  "edges": [
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      "id": "edge:3483",
      "source": "term:ion",
      "target": "topic:topic-electrochemistry",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
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    {
      "id": "edge:3484",
      "source": "term:ion",
      "target": "term:electrolyte",
      "type": "relatedTo",
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        "sourceFile": "terms.json",
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      "id": "edge:3485",
      "source": "term:ion",
      "target": "term:ionic-path",
      "type": "relatedTo",
      "properties": {
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        "meaning": "Related context; not a causal claim"
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      "id": "edge:3486",
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      "target": "term:transference-number",
      "type": "relatedTo",
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        "meaning": "Related context; not a causal claim"
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      "id": "edge:3487",
      "source": "term:ion",
      "target": "term:migration",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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      "id": "topic:topic-electrochemistry",
      "type": "Topic",
      "label": "Electrochemistry fundamentals",
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        "id": "topic-electrochemistry",
        "name": "Electrochemistry fundamentals",
        "lede": "The reactions and potentials that make a cell a battery.",
        "context": "Connect reaction sites and transport paths.",
        "example": "A circuit can predict terminal voltage while leaving electrode potentials and reaction kinetics unresolved.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/",
        "lesson_label": "Open cell anatomy"
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        "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.",
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          "carbonate-solvent",
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          "separator"
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        "section": "topic-electrochemistry",
        "definition": "The route lithium ions take: out of one electrode’s particles, through the electrolyte in its pores, across the separator and into the particles of the other electrode. The electrons and ions arrive together, so the slower of the two paths limits the cell.",
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        "mentions": [
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        "id": "transference-number",
        "name": "Transference number",
        "abbr": "t₊",
        "section": "topic-electrochemistry",
        "definition": "The fraction of the ionic current carried by the lithium ion rather than by the anion, about 0.3–0.4 in liquid electrolytes. A low value lets concentration gradients build up under load; single-ion solid electrolytes have a value near 1.",
        "unit": "—",
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      "id": "term:migration",
      "type": "Term",
      "label": "Migration",
      "properties": {
        "id": "migration",
        "name": "Migration",
        "section": "topic-transport",
        "definition": "Movement of ions driven by an electric field rather than a concentration difference. In the electrolyte both migration and diffusion carry lithium; the transference number says how much of the current the lithium ions carry by migration.",
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          "transference-number",
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}
