{
    "identifier": "ark:\/88434\/mds2-4027",
    "accessLevel": "public",
    "contactPoint": {
        "hasEmail": "mailto:[email protected]",
        "fn": "Wai Cheong Tam"
    },
    "programCode": [
        "006:045"
    ],
    "landingPage": "https:\/\/data.nist.gov\/od\/id\/mds2-4027",
    "title": "Determination of Safe Intervention Windows for 18650 and 21700 Lithium-Ion Batteries from External Heating: Thermocouple Data",
    "description": "The dataset contains thermocouple-based surface temperature measurements from two series of lithium-ion battery thermal-abuse experiments. The first series consists of continuous-heating tests, in which external heating was applied until ignition to quantify the time interval between the safety-valve breakage (SVB) event and subsequent ignition. The second series consists of interrupted-heating tests, where heating was deliberately stopped at different times after SVB to evaluate the safe intervention window and characterize delayed-ignition behavior.\n\nIn all experiments, thermal abuse was initiated using a flexible external heating pad delivering approximately 41 W of constant power. Two cylindrical cell types were examined: (1) 18650 nickel-cobalt-aluminum oxide (NCA) cells with a nominal capacity of 3500 mAh, and (2) 21700 nickel-manganese-cobalt oxide (NMC) cells with a nominal capacity of 5000 mAh.\n\nThe unit of time is seconds, and the unit of temperature is degrees Celsius.",
    "language": [
        "en"
    ],
    "distribution": [
        {
            "downloadURL": "https:\/\/data.nist.gov\/od\/ds\/mds2-4027\/Data%20Descriptions.txt",
            "mediaType": "text\/plain",
            "title": "Data Descriptions"
        },
        {
            "downloadURL": "https:\/\/data.nist.gov\/od\/ds\/mds2-4027\/Data%20Disclaimer.txt",
            "mediaType": "text\/plain",
            "title": "Data Disclaimer"
        },
        {
            "downloadURL": "https:\/\/data.nist.gov\/od\/ds\/mds2-4027\/Li-ion%20Battery%20Safe%20Intervention%20Time%20Temperature%20Data.xlsx",
            "mediaType": "application\/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
            "title": "Li-ion Battery Temperature Data"
        }
    ],
    "bureauCode": [
        "006:55"
    ],
    "modified": "2025-11-27 00:00:00",
    "publisher": {
        "@type": "org:Organization",
        "name": "National Institute of Standards and Technology"
    },
    "theme": [
        "Fire:Fire risk reduction",
        "Fire:Fire detection",
        "Fire"
    ],
    "keyword": [
        "thermal runaway mitigation",
        "intervention time",
        "delayed ignition",
        "lithium-ion battery safety",
        "thermal abuse"
    ]
}