NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

A negative electrode material for a lithium ion secondary battery, comprising graphite particles and a low-crystalline carbon layer that covers at least a portion of a surface of the graphite particles, and satisfying at least one of the following A) having two or more peaks in a R-value histogram o...

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Bibliographische Detailangaben
Hauptverfasser: HOMBOH,, Hidetoshi, HOSHI, Kento, KAMIYAMA, Yuma
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:A negative electrode material for a lithium ion secondary battery, comprising graphite particles and a low-crystalline carbon layer that covers at least a portion of a surface of the graphite particles, and satisfying at least one of the following A) having two or more peaks in a R-value histogram obtained by a mapping Raman measurement; B) having a variance of 2.0 or more of a maximum peak in a R-value histogram obtained by a mapping Raman measurement; or C) having two or more carbon phases with a different degree of crystallinity.