二次電池用負極及び二次電池

Japanese Patent JP7170330

B2

To provide a negative electrode for a secondary battery and a secondary battery having a large energy density and a capacity less likely to reduce even after repeated charging and discharging, and manufacturing methods thereof. The above-described problem is solved by a negative electrode for a secondary battery (3) comprising a negative electrode active material layer (3') including at least a silicon-based active material and a binder, and a negative electrode current collector (14) having a structural form in which the silicon-based active material has an amorphous region including lithium and island-shaped lithium carbonate is distributed in the amorphous region. This negative electrode for a secondary battery (3) is manufactured by a method including a step of forming a negative electrode active material layer (3') including a Si-based active material and a binder, and a predoping step of bringing an electrolytic solution (5) containing Li into contact with the negative electrode active material layer (3'), applying pressure, and introducing Li ions by an electrochemical method.

WO/2023/168485	ANODE COMPOSITION
WO/2020/175686	ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY
WO/2016/123396	IONIC LIQUID-ENABLED HIGH-ENERGY LI-ION BATTERIES

Hiroshi Nishihara
Mariko Miyaji
Masaharu Sato

JP2019550435A

November 14, 2022

October 31, 2018

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National University Corporation The University of Tokyo

H01M4/134; H01M4/13; H01M4/139; H01M4/1395; H01M4/36; H01M4/38; H01M4/48; H01M4/62

JP2015156355A
JP9293499A
JP2017011068A
JP5041249A
JP2005166469A
JP2015198038A

WO2010071166A1
WO2017183286A1

Shunichi Yoshimura

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