Lithium secondary battery and manufacturing method of the same

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United States of America Patent

PATENT NO 9876229
SERIAL NO

15082662

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Abstract

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A manufacturing method of the invention includes: a process of preparing a positive electrode which includes a positive electrode mixture layer, a negative electrode which includes a negative electrode mixture layer, and a non-aqueous electrolyte; and a process of accommodating the positive electrode, the negative electrode, and the non-aqueous electrolyte in a battery case. The non-aqueous electrolyte contains lithium sulfate. In addition, when a BET specific surface area of the negative electrode mixture layer is referred to as X (m2/g) and an addition amount of the lithium sulfate with respect to a total amount of the non-aqueous electrolyte is referred to as Y (mass %), the following relationships are satisfied:

description='In-line Formulae' end='lead'3≦X≦4.3;description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'0.02≦Y≦0.1; anddescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Y/X≦0.023.description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashimoto, Tatsuya Osaka, JP 164 1717
Yamasaki, Hiroshi Nagoya, JP 81 746

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