Galvanostatic Charge–Discharge Test#

A Galvanostatic Charge–Discharge Test is a fundamental electrochemical test in which a constant current is applied to charge and discharge a cell. It provides direct measures of capacity, efficiency, and degradation over cycles.

Ontology Alignment#

  • Class: GalvanostaticChargeDischargeTest

  • Subclass of: ElectrochemicalTest

  • Related processes: ChargingProcess, DischargingProcess, RestProcess

Guidelines for Use#

To represent this test:

  1. Use GalvanostaticChargeDischargeTest as the main class.

  2. Define the hasProcedure workflow as a sequence of charge, rest, and discharge tasks.

  3. Add test conditions (C_Rate, CutoffVoltage, AmbientTemperature).

  4. Define results such as DischargeCapacity or CoulombicEfficiency.

Example#

{
  "@context": "https://w3id.org/emmo/domain/electrochemistry/context",
  "@type": "GalvanostaticChargeDischargeTest",
  "hasTestObject": { "@type": "BatteryCell" },
  "hasProcedure": {
    "@type": "Workflow",
    "hasTask": [
      { "@type": "ChargingProcess" },
      { "@type": "RestProcess" },
      { "@type": "DischargingProcess" }
    ]
  },
  "hasProperty": [
    {
      "@type": "C_Rate",
      "hasNumericalPart": { "@type": "RealData", "hasNumberValue": 1.0 },
      "hasMeasurementUnit": "emmo:UnitOne"
    },
    {
      "@type": "AmbientTemperature",
      "hasNumericalPart": { "@type": "RealData", "hasNumberValue": 25 },
      "hasMeasurementUnit": "emmo:DegreeCelsius"
    }
  ],
  "hasResult": [
    {
      "@type": "DischargeCapacity",
      "hasNumericalPart": { "@type": "RealData", "hasNumberValue": 4.8 },
      "hasMeasurementUnit": "emmo:AmpereHour"
    }
  ]
}