Composition for secondary battery electrode
AssigneeSekisui Chemical Co., Ltd.
InventorYuutarou Asaba
Life of this patent
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Abstract
The present invention aims to provide a composition for a secondary battery electrode which is excellent in dispersibility of an active material and adhesiveness, capable of preventing battery deterioration and failure due to moisture absorption, and capable of providing a high-capacity secondary battery. Provided is a composition for a secondary battery electrode, containing: an active material; a binder; and an organic solvent, the binder containing a polyvinyl acetal resin, the polyvinyl acetal resin having an electron-donating group that has an acid dissociation constant in water of less than 16 and an electron-withdrawing group, the polyvinyl acetal resin having a degree of polymerization of 250 to 800 and a hydroxy group content of 35 to 70 mol %.
Claims15
A composition for a secondary battery electrode, comprising:
- an active material;
- a binder;
- and
- an organic solvent,
- the binder containing a polyvinyl acetal resin,
- the polyvinyl acetal resin having an electron-donating group that has an acid dissociation constant in water of less than 16 and an electron-withdrawing group,
- the polyvinyl acetal resin having a degree of polymerization of 250 to 800 and a hydroxy group content of 35 to 70 mol %, and
- the electron-withdrawing group being bonded directly to a carbon constituting a main chain, or being bonded to an acetal group of the polyvinyl acetal resin.
Dependencies are inferred from the claim text.