NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL APPARATUS

Provided in the present application is a negative electrode plate, a secondary battery, a battery module, a battery pack and a power consuming device. The negative electrode plate comprises a first coating, a second coating and a current collector, the current collector being on one side of the seco...

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Bibliographische Detailangaben
Hauptverfasser:	LI, Xuan, CHEN, Xingbu, WEI, Jianren, SUN, Xin, SU, Huisen, WU, Lili
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	Provided in the present application is a negative electrode plate, a secondary battery, a battery module, a battery pack and a power consuming device. The negative electrode plate comprises a first coating, a second coating and a current collector, the current collector being on one side of the second coating, the first coating being on the other side of the second coating, the first coating and the second coating comprising a silicon-based material, wherein a molar ratio of element O to element Si of the silicon-based material in the first coating is 0.5 to 1.5, and a molar ratio of element O to element Si of the silicon-based material in the second coating is less than or equal to 0.3. The present application can improve the cycle life and energy density of a battery.