{
  "node": {
    "id": "term:organic-electrode-material",
    "type": "Term",
    "label": "Organic electrode material",
    "properties": {
      "id": "organic-electrode-material",
      "name": "Organic electrode material",
      "aka": [
        "organic cathode",
        "organic battery",
        "redox-active polymer"
      ],
      "section": "topic-other-chemistries",
      "definition": "An active material made of carbon-based molecules or polymers, such as quinones, imides or nitroxide radicals, that store charge by reversible redox of their functional groups. They need no mined metals, work with lithium, sodium, potassium and zinc ions alike, and can be tuned by chemistry; dissolution in the electrolyte, low density and poor conductivity are the obstacles.",
      "related": [
        "active-material",
        "sodium-ion",
        "redox-reaction",
        "prussian-blue-analogue",
        "polyanionic-cathode"
      ],
      "url": "https://lemonergy.com/learn/glossary/organic-electrode-material/",
      "mentions": [
        "electrolyte"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:6129",
      "source": "term:organic-electrode-material",
      "target": "topic:topic-other-chemistries",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:6130",
      "source": "term:organic-electrode-material",
      "target": "term:active-material",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6131",
      "source": "term:organic-electrode-material",
      "target": "term:sodium-ion",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6132",
      "source": "term:organic-electrode-material",
      "target": "term:redox-reaction",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6133",
      "source": "term:organic-electrode-material",
      "target": "term:prussian-blue-analogue",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6134",
      "source": "term:organic-electrode-material",
      "target": "term:polyanionic-cathode",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/organic-electrode-material/electrolyte",
      "source": "term:organic-electrode-material",
      "target": "term:electrolyte",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-other-chemistries",
      "type": "Topic",
      "label": "Other and emerging chemistries",
      "properties": {
        "id": "topic-other-chemistries",
        "name": "Other and emerging chemistries",
        "lede": "Batteries beyond today’s lithium-ion: lead, nickel and primary cells, flow and metal–air batteries, solid-state and lithium-metal cells, and the multivalent and sodium chemistries in development.",
        "context": "Do not carry lithium-ion assumptions into every chemistry.",
        "example": "Two chemistries can meet the same energy target with different voltage windows and charge termination.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-anatomy/",
        "lesson_label": "Open cell anatomy"
      }
    },
    {
      "id": "term:active-material",
      "type": "Term",
      "label": "Active material",
      "properties": {
        "id": "active-material",
        "name": "Active material",
        "abbr": "AM",
        "section": "topic-components",
        "definition": "The part of an electrode that actually stores lithium — graphite on the negative side, an oxide or phosphate on the positive. It makes up most of the electrode coating; the rest is binder and conductive additive.",
        "related": [
          "cathode-active-material",
          "anode-active-material",
          "binder",
          "conductive-additive",
          "specific-capacity"
        ],
        "lesson": "fundamentals/cell-architecture/#composite",
        "example": {
          "title": "Choose a mass basis",
          "text": "A 100 g coating containing 95 g active material has different specific-capacity numbers when normalized to active mass versus total coating mass."
        },
        "url": "https://lemonergy.com/learn/glossary/active-material/",
        "mentions": [
          "electrode",
          "graphite",
          "coating"
        ]
      }
    },
    {
      "id": "term:sodium-ion",
      "type": "Term",
      "label": "Sodium-ion battery",
      "properties": {
        "id": "sodium-ion",
        "name": "Sodium-ion battery",
        "abbr": "Na-ion",
        "section": "topic-other-chemistries",
        "definition": "A cell built like a lithium-ion cell but shuttling sodium ions, usually between a hard-carbon negative electrode and a layered oxide or Prussian-blue positive. It uses no lithium, cobalt or copper, at the cost of lower energy density.",
        "related": [
          "hard-carbon",
          "lithium-ion",
          "energy-density",
          "stationary-storage",
          "seawater-battery"
        ],
        "url": "https://lemonergy.com/learn/glossary/sodium-ion/",
        "mentions": [
          "electrode",
          "negative-electrode",
          "cobalt",
          "layered-oxide"
        ]
      }
    },
    {
      "id": "term:redox-reaction",
      "type": "Term",
      "label": "Redox reaction",
      "properties": {
        "id": "redox-reaction",
        "name": "Redox reaction",
        "section": "topic-electrochemistry",
        "definition": "A reaction in which electrons move from one species to another: one is oxidised, the other reduced. A battery separates the two halves onto two electrodes so the electrons must travel through the external circuit.",
        "related": [
          "oxidation",
          "reduction",
          "half-reaction",
          "electrode-potential",
          "galvanic-cell"
        ],
        "lesson": "labs/battery-materials-lab/#bml-aqueous-mechanism",
        "url": "https://lemonergy.com/learn/glossary/redox-reaction/",
        "mentions": []
      }
    },
    {
      "id": "term:prussian-blue-analogue",
      "type": "Term",
      "label": "Prussian blue analogue",
      "properties": {
        "id": "prussian-blue-analogue",
        "name": "Prussian blue analogue",
        "abbr": "PBA",
        "aka": [
          "Prussian white",
          "hexacyanoferrate"
        ],
        "section": "topic-other-chemistries",
        "definition": "An open-framework compound, AₓM[Fe(CN)₆], in which iron–cyanide units and another metal form a cubic cage with wide channels for large ions. Made at low temperature from cheap elements, its sodium-rich form, Prussian white, is a leading sodium-ion cathode. Water trapped in the lattice degrades cells, and the cyanide groups raise questions in thermal runaway.",
        "related": [
          "sodium-ion",
          "potassium-ion",
          "cathode-active-material",
          "moisture-content",
          "ammonium-ion"
        ],
        "url": "https://lemonergy.com/learn/glossary/prussian-blue-analogue/",
        "mentions": [
          "cathode",
          "thermal-runaway"
        ]
      }
    },
    {
      "id": "term:polyanionic-cathode",
      "type": "Term",
      "label": "Polyanionic cathode",
      "properties": {
        "id": "polyanionic-cathode",
        "name": "Polyanionic cathode",
        "aka": [
          "polyanion cathode",
          "NVPF",
          "NFPP",
          "phosphate cathode"
        ],
        "section": "topic-other-chemistries",
        "definition": "A positive material built from transition metals and polyanion groups such as PO₄³⁻, SO₄²⁻ or P₂O₇⁴⁻. The strongly bonded groups raise the voltage through the inductive effect and hold oxygen tightly, giving long life and safety at some cost in capacity and conductivity. LFP is the lithium example; Na₃V₂(PO₄)₂F₃ and iron-based Na₄Fe₃(PO₄)₂P₂O₇ serve sodium-ion cells.",
        "related": [
          "lfp",
          "olivine-structure",
          "sodium-ion",
          "prussian-blue-analogue",
          "layered-oxide"
        ],
        "url": "https://lemonergy.com/learn/glossary/polyanionic-cathode/",
        "mentions": []
      }
    },
    {
      "id": "term:electrolyte",
      "type": "Term",
      "label": "Electrolyte",
      "properties": {
        "id": "electrolyte",
        "name": "Electrolyte",
        "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": [
          "lithium-salt",
          "carbonate-solvent",
          "electrolyte-additive",
          "ionic-conductivity",
          "solid-electrolyte",
          "ionic-liquid-electrolyte"
        ],
        "lesson": "fundamentals/cell-architecture/#electrolyte",
        "example": {
          "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"
        ]
      }
    }
  ]
}