SECONDARY BATTERY AND ELECTRONIC DEVICE COMPRISING SAME

SECONDARY BATTERY AND ELECTRONIC DEVICE COMPRISING SAME

The invention provides a secondary battery and an electronic device comprising the same. The secondary battery comprises a positive pole piece, a negative pole piece, an isolating membrane and electrolyte, the negative pole piece comprises a negative pole material layer, the negative pole material l...

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Hauptverfasser: TANG CHAO, CAO YANG, CUI HUI, WU MINGYONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator TANG CHAO
CAO YANG
CUI HUI
WU MINGYONG
description The invention provides a secondary battery and an electronic device comprising the same. The secondary battery comprises a positive pole piece, a negative pole piece, an isolating membrane and electrolyte, the negative pole piece comprises a negative pole material layer, the negative pole material layer comprises a silicon-containing active substance, the silicon-containing active substance comprises a silicon element, based on the total mass of the negative pole material layer, the mass percentage of the silicon element is C%, and C is larger than or equal to 1 and smaller than or equal to 20; the electrolyte comprises (1) a first component which is a boron-containing lithium salt; based on the total mass of the electrolyte, the mass percentage of the first component is B%, and 0.1 < = B < = 5; (2) a second component, wherein the second component comprises at least one of a compound shown in a formula I or a compound shown in a formula II; based on the total mass of the electrolyte, the mass percentage conte
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title SECONDARY BATTERY AND ELECTRONIC DEVICE COMPRISING SAME
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