NEGATIVE-ELECTRODE MATERIAL FOR USE IN LITHIUM-ION SECONDARY BATTERIES

WIPO Patent Application WO/2015/037114

A1

The purpose of this invention is to provide a novel negative-electrode active-material coating material that combines reduced irreversible capacity with reduced resistance. In order to solve that problem, this invention provides a negative-electrode coating material for use in lithium-ion secondary batteries, said negative-electrode coating material being characterized by being representable by formula (1) and further characterized in that: Z in formula (1) represents a carboxyl group (-COOX), a sulfo group (-SO3X), or a phosphate group (-O-PO(OX)2); X comprises hydrogen, an alkali metal, or an alkaline earth metal; R3 in formula (1) comprises a fluorine-containing functional group; R1 and R2 in formula (1) each comprise hydrogen or an alkyl group; and m1 represents the repetition count of the constitutional unit. Optimizing the positions of fluorine and an ionic functional group makes it possible to provide a novel negative-electrode active-material coating material that exhibits high lithium-ion conductivity and combines reduced irreversible capacity with reduced resistance.

WO/2019/124276	ELECTRODE AND FABRICATION METHOD, ELECTRODE ELEMENT AND NONAQUEOUS ELECTROLYTIC STORAGE ELEMENT
JP2011048921	LITHIUM SECONDARY BATTERY, AND METHOD OF MANUFACTURING THE SAME

IWAYASU NORIO (JP)

PCT/JP2013/074790

March 19, 2015

September 13, 2013

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HITACHI LTD (JP)

H01M4/62; H01M4/13; H01M4/36; H01M10/0525

JP2013152879A	2013-08-08
JP2011138732A	2011-07-14
JP2012138327A	2012-07-19
JP2012138314A	2012-07-19
JP2011159550A	2011-08-18

INOUE Manabu et al. (JP)
Manabu Inoue (JP)

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