Gs Yuasa International Ltd.

Mitsui Chemicals, Inc.

Akira Kishimoto

Ryo Harada

Hiroe Nakagawa

Satoko Fujiyama

Takashi Hayashi

Hiromasa Muramatsu

Masataka Miyasato

Hidemi Yamamoto

Shinya Otani

A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, in which the positive electrode includes, as an active material, a lithium-transition metal composite oxide that has an α-NaFeO-type crystal structure, and is represented by the general formula LiMeO(0<α, Me is a transition metal element containing Ni and Mn, or containing Ni, Mn, and Co), and has a diffraction peak observed in the range of 20° or more and 22° or less in an X-ray diffraction pattern obtained with a CuKα line.

Positive active material for nonaqueous electrolyte secondary battery, method for producing positive active material for nonaqueous electrolyte secondary battery, positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery, and method of using nonaqueous electrolyte secondary battery

A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, the positive electrode containing, as a positive active material, a lithium transition metal composite oxide having an α-NaFeOtype crystal structure, a molar ratio of Li to Me, Li/Me of more than 1, Me representing transition metal elements including Ni and Mn or including Ni, Mn, and Co, and a molar ratio of Mn to Me, Mn/Me of 0.40 or more and 0.65 or less, and the nonaqueous electrolyte containing, as an electrolyte salt, LiPFand a lithium imide salt.

Nonaqueous electrolyte secondary battery, method of manufacturing nonaqueous electrolyte secondary battery, and method of using nonaqueous electrolyte secondary battery

A non-aqueous electrolyte solution for a secondary battery, including a boron compound represented by Formula (1). In Formula (1), R represents an alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 2 to 12 carbon atoms, or a group represented by Formula (2). In Formula (2), each of Rto Rindependently represents a hydrogen atom, a halogen atom, an alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 2 to 12 carbon atoms, or an aryl group having from 6 to 12 carbon atoms, and * represents a bonding site with an oxygen atom in Formula (1). 

Non-aqueous electrolyte solution for secondary battery, and secondary battery

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Kyoto, Japan

Akira Kishimoto