POWER STORAGE DEVICE BINDER COMPOSITION, POWER STORAGE DEVICE ELECTRODE SLURRY, POWER STORAGE DEVICE ELECTRODE, AND POWER STORAGE DEVICE

WIPO Patent Application WO/2023/021941

A1

Provided is a power storage device binder composition that has excellent adhesion and that can enhance charge/discharge durability characteristics of a power storage device.　A power storage device binder composition according to the present invention contains a polymer (A) and a liquid medium (B). If the total of repeating units contained in the polymer (A) is 100 mass%, the polymer (A) contains 1-40 mass% of repeating units (a1) derived from an unsaturated carboxylic acid ester having an alicyclic hydrocarbon group and 45-90 mass% of repeating units (a2) derived from an unsaturated carboxylic acid ester having an aliphatic hydrocarbon group (excluding the unsaturated carboxylic acid ester having an alicyclic hydrocarbon group), and the swelling ratio of the polymer (A) when the polymer (A) is immersed in a solvent comprising a propylene carbonate and a diethyl carbonate with a volume fraction of 1:1 at 70°C for 24 hours is 120-200 mass%.

NAKAYAMA TAKUYA (JP)
ASAI YUTA (JP)
MAEGAWA MAKI (JP)

PCT/JP2022/028623

February 23, 2023

July 25, 2022

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ENEOS MAT CORPORATION (JP)

H01M4/62; H01G11/38; H01M4/13; H01M4/139

WO2010113940A1

2010-10-07

JP2014225465A	2014-12-04
JP2020184462A	2020-11-12
JP2017168213A	2017-09-21
JP2019179698A	2019-10-17
JP2018181853A	2018-11-15
JP5999399B2	2016-09-28
JP5477610B1	2014-04-23
JP2020184461A	2020-11-12

OFUCHI, Michie et al. (JP)

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