Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode, electrode for non-aqueous secondary battery, and non-aqueous secondary battery
A binder composition for a non-aqueous secondary battery electrode contains an organic solvent and a binder that includes a polymer A including an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.00 mass % and not more than 10.00 mass %. The polymer A has a viscosity of 10,000 mPa·s or less at a shear rate of 0.1 s −1 when mixed with the organic solvent in a concentration of 8 mass % to obtain a mixture.
1. A binder composition for a non-aqueous secondary battery electrode comprising a binder and an organic solvent, wherein
the binder includes a polymer A,
the polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.00 mass % and not more than 10.00 mass %, and
the polymer A has a viscosity of 10,000 mPa·s or less at a shear rate of 0.1 s −1 when mixed with the organic solvent in a concentration of 8 mass % to obtain a mixture.
2. The binder composition for a non-aqueous secondary battery electrode according to claim 1 , wherein the polymer A includes a cross-linkable monomer unit in a proportion of not less than 0.01 mass % and not more than 5.00 mass %.
3. The binder composition for a non-aqueous secondary battery electrode according to claim 1 , wherein the polymer A includes a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.00 mass % and not more than 98.00 mass %.
4. The binder composition for a non-aqueous secondary battery electrode according to claim 1 , wherein insoluble content of the polymer A when the polymer A is mixed with N-methyl-2-pyrrolidone in a concentration of 8 mass % is not less than 70 mass % and not more than 100 mass %.
5. The binder composition for a non-aqueous secondary battery electrode according to claim 1 , wherein the polymer A has a volume-average particle diameter of not less than 100 nm and not more than 1,000 nm.
6. The binder composition for a non-aqueous secondary battery electrode according to claim 1 , wherein
the binder further includes a polymer B, and
the polymer B has a viscosity of not less than 10 mPa·s and not more than 10,000 mPa·s at a shear rate of 10 s −1 when dissolved in the organic solvent in a concentration of 8 mass % to obtain a solution.
7. The binder composition for a non-aqueous secondary battery electrode according to claim 6 , wherein insoluble content of the polymer B when the polymer B is mixed with N-methyl-2-pyrrolidone in a concentration of 8 mass % is 50 mass % or less.
8. A slurry composition for a non-aqueous secondary battery electrode comprising an electrode active material and the binder composition for a non-aqueous secondary battery electrode according to claim 1 .
9. An electrode for a non-aqueous secondary battery comprising an electrode mixed material layer formed using the slurry composition for a non-aqueous secondary battery electrode according to claim 8 .
10. A non-aqueous secondary battery comprising the electrode for a non-aqueous secondary battery according to claim 9 .