LITHIUM ION SECONDARY BATTERY

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United States of America Patent

SERIAL NO

15129609

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Abstract

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A lithium ion secondary battery including: a positive electrode including a positive electrode active material capable of intercalating and deintercalating a lithium ion; a negative electrode including a negative electrode active material capable of intercalating and deintercalating a lithium ion; and a non-aqueous electrolytic solution, wherein the positive electrode active material includes a Mn-based spinel-type composite oxide and an additional active material, and the content of the Mn-based spinel-type composite oxide based on the whole of the positive electrode active material is 60% by mass or less, and the negative electrode active material includes a first graphite particle containing natural graphite and a second graphite particle containing artificial graphite, and the content of the second graphite particle based on the sum total of the first graphite particle and the second graphite particle is in the range of 1 to 30% by mass.

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Patent Owner(s)

Patent OwnerAddress
ENVISION AESC ENERGY DEVICES LTDSAGAMIHARA-SHI KANAGAWA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KONO, Yasutaka Kanagawa, JP 55 456
SUZUKI, Takayuki Kanagawa, JP 661 11733
TAKAHASHI, Hiroo Kanagawa, JP 102 467
TAKEDA, Kouzou Kanagawa, JP 6 20

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