{
  "node": {
    "id": "term:energy-dispersive-x-ray-spectroscopy",
    "type": "Term",
    "label": "Energy-dispersive X-ray spectroscopy",
    "properties": {
      "id": "energy-dispersive-x-ray-spectroscopy",
      "name": "Energy-dispersive X-ray spectroscopy",
      "abbr": "EDS",
      "aka": [
        "EDX",
        "EDXS",
        "EDS mapping"
      ],
      "section": "topic-analysis",
      "definition": "Mapping elements inside an electron microscope: the beam excites X-rays whose energies identify the elements present, giving composition maps alongside the image. It shows binder and conductive-carbon distribution, coatings and deposited transition metals, but lithium is effectively invisible to it.",
      "related": [
        "scanning-electron-microscopy",
        "x-ray-fluorescence",
        "transmission-electron-microscopy",
        "binder-migration",
        "transition-metal-dissolution"
      ],
      "url": "https://lemonergy.com/learn/glossary/energy-dispersive-x-ray-spectroscopy/",
      "mentions": [
        "binder"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:5609",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "topic:topic-analysis",
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    {
      "id": "edge:5610",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:scanning-electron-microscopy",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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    },
    {
      "id": "edge:5611",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:x-ray-fluorescence",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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      "id": "edge:5612",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:transmission-electron-microscopy",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5613",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:binder-migration",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5614",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:transition-metal-dissolution",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/energy-dispersive-x-ray-spectroscopy/binder",
      "source": "term:energy-dispersive-x-ray-spectroscopy",
      "target": "term:binder",
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  ],
  "neighbors": [
    {
      "id": "topic:topic-analysis",
      "type": "Topic",
      "label": "Materials analysis and post-mortem",
      "properties": {
        "id": "topic-analysis",
        "name": "Materials analysis and post-mortem",
        "lede": "The laboratory techniques that look inside electrodes, interphases and electrolytes to see what a cell is made of and how it aged.",
        "context": "Connect results with scale and specimen preparation.",
        "example": "Surface and bulk measurements may find different compositions in the same electrode without contradiction.",
        "lesson_url": "https://lemonergy.com/learn/labs/battery-materials-lab/",
        "lesson_label": "Open materials lab"
      }
    },
    {
      "id": "term:scanning-electron-microscopy",
      "type": "Term",
      "label": "Scanning electron microscopy",
      "properties": {
        "id": "scanning-electron-microscopy",
        "name": "Scanning electron microscopy",
        "abbr": "SEM",
        "section": "topic-analysis",
        "definition": "Imaging a surface with a focused electron beam at magnifications far beyond light microscopy. In battery work it shows particle cracking, plated lithium and coating morphology; cross-sections show the layer structure of an electrode.",
        "related": [
          "post-mortem",
          "particle-cracking",
          "x-ray-diffraction"
        ],
        "url": "https://lemonergy.com/learn/glossary/scanning-electron-microscopy/",
        "mentions": [
          "electrode",
          "coating"
        ]
      }
    },
    {
      "id": "term:x-ray-fluorescence",
      "type": "Term",
      "label": "X-ray fluorescence",
      "properties": {
        "id": "x-ray-fluorescence",
        "name": "X-ray fluorescence",
        "abbr": "XRF",
        "aka": [
          "XRF spectroscopy"
        ],
        "section": "topic-analysis",
        "definition": "Exciting a sample with X-rays and reading the characteristic X-rays each element re-emits — a fast, largely non-destructive composition measurement. It checks nickel, manganese and cobalt ratios, coating loading and black-mass grades, and finds transition metals deposited on aged anodes, but it cannot detect lithium.",
        "related": [
          "inductively-coupled-plasma",
          "energy-dispersive-x-ray-spectroscopy",
          "black-mass",
          "transition-metal-dissolution",
          "areal-loading"
        ],
        "url": "https://lemonergy.com/learn/glossary/x-ray-fluorescence/",
        "mentions": [
          "coating",
          "cobalt",
          "manganese"
        ]
      }
    },
    {
      "id": "term:transmission-electron-microscopy",
      "type": "Term",
      "label": "Transmission electron microscopy",
      "properties": {
        "id": "transmission-electron-microscopy",
        "name": "Transmission electron microscopy",
        "abbr": "TEM",
        "aka": [
          "STEM",
          "HRTEM"
        ],
        "section": "topic-analysis",
        "definition": "Imaging by passing an electron beam through a specimen thinner than about 100 nm, fine enough to resolve rows of atoms. It reveals the nanometre-thick rock-salt layer that forms on aged nickel-rich particles, the structure of SEI and CEI, and cracks within particles; specimens are usually thinned with a focused ion beam.",
        "related": [
          "scanning-electron-microscopy",
          "cryo-electron-microscopy",
          "focused-ion-beam-sem",
          "structural-degradation",
          "cei"
        ],
        "url": "https://lemonergy.com/learn/glossary/transmission-electron-microscopy/",
        "mentions": [
          "sei"
        ]
      }
    },
    {
      "id": "term:binder-migration",
      "type": "Term",
      "label": "Binder migration",
      "properties": {
        "id": "binder-migration",
        "name": "Binder migration",
        "section": "topic-manufacturing",
        "definition": "Binder carried to the top of the coating by evaporating solvent during fast drying, leaving the foil interface binder-poor. The result is weak adhesion and higher resistance; it is controlled by drying profile and slurry formulation.",
        "related": [
          "drying",
          "binder",
          "delamination",
          "coating"
        ],
        "url": "https://lemonergy.com/learn/glossary/binder-migration/",
        "mentions": [
          "slurry"
        ]
      }
    },
    {
      "id": "term:transition-metal-dissolution",
      "type": "Term",
      "label": "Transition-metal dissolution",
      "properties": {
        "id": "transition-metal-dissolution",
        "name": "Transition-metal dissolution",
        "section": "topic-aging",
        "definition": "Manganese, nickel or cobalt ions leaching from the positive electrode into the electrolyte, especially at high voltage and temperature or when HF is present. They migrate to the negative electrode and poison the SEI there, accelerating lithium loss.",
        "related": [
          "lmo",
          "hydrofluoric-acid",
          "sei",
          "loss-of-active-material",
          "crosstalk"
        ],
        "lesson": "fundamentals/battery-aging/#crystals",
        "url": "https://lemonergy.com/learn/glossary/transition-metal-dissolution/",
        "mentions": [
          "electrode",
          "negative-electrode",
          "positive-electrode",
          "electrolyte",
          "cobalt",
          "leaching",
          "manganese"
        ]
      }
    },
    {
      "id": "term:binder",
      "type": "Term",
      "label": "Binder",
      "properties": {
        "id": "binder",
        "name": "Binder",
        "section": "topic-components",
        "definition": "A polymer that holds electrode particles to each other and to the foil — typically PVDF for positive electrodes and CMC with SBR for graphite. It stores no charge, so cell designers use as little as the electrode needs.",
        "related": [
          "active-material",
          "conductive-additive",
          "slurry",
          "pvdf",
          "nmp",
          "paa"
        ],
        "lesson": "fundamentals/cell-architecture/#composite",
        "example": {
          "title": "Balance coating functions",
          "text": "Increasing binder fraction at fixed coating mass leaves less mass for active material and conductive additive. Adhesion and capacity are separate design considerations."
        },
        "url": "https://lemonergy.com/learn/glossary/binder/",
        "mentions": [
          "electrode",
          "graphite",
          "cmc",
          "sbr"
        ]
      }
    }
  ]
}