METHOD OF DETECTING METALLIC LITHIUM PRESENT ON AN ELECTRODE

METHOD OF DETECTING METALLIC LITHIUM PRESENT ON AN ELECTRODE

A method of detecting metallic lithium present on an electrode of a lithium ion secondary battery includes depositing a lithium-reactive solution including an oxidized fluorescent dye onto the electrode to form a coated electrode. Concurrent to depositing, the method includes reducing the oxidized f...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Balogh, Michael P, Moote, John M, Hughes, JR., Mark A, Thompson, Daniel R
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
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Beschreibung
Zusammenfassung:A method of detecting metallic lithium present on an electrode of a lithium ion secondary battery includes depositing a lithium-reactive solution including an oxidized fluorescent dye onto the electrode to form a coated electrode. Concurrent to depositing, the method includes reducing the oxidized fluorescent dye to form a reduced dye and a plurality of lithium ions. The method further includes, after reducing, drying the coated electrode to again form the oxidized fluorescent dye. After drying, the method includes exposing the oxidized fluorescent dye to ultraviolet radiation having a wavelength of from 100 nm to 500 nm to thereby illuminate and detect the metallic lithium. A lithium ion secondary battery system is also disclosed.