Non-aqueous electrolyte battery and negative electrode
View Patent ↗A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the negative electrode contains a negative electrode mixture containing a binder; and the binder contains polyvinylidene fluoride and polyacrylonitrile, with a mass ratio of polyvinylidene fluoride to polyacrylonitrile ranging from 99.9/0.1 to 95.1/4.9.
1. A non-aqueous electrolyte secondary battery comprising:
a positive electrode;
a negative electrode; and
a non-aqueous electrolyte, wherein
the negative electrode contains a negative electrode mixture containing a binder; and
the binder contains polyvinylidene fluoride and polyacrylonitrile, with a mass ratio of polyvinylidene fluoride to polyacrylonitrile ranging from 99.9/0.1 to 95.1/4.9.
2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the non-aqueous electrolyte is a gel non-aqueous electrolyte.
3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the non-aqueous electrolyte contains at least a copolymer of vinylidene fluoride and hexafluoropropylene.
4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein a total content of the polyvinylidene fluoride and the polyacrylonitrile relative to the negative electrode mixture is from 2 to 6.5% by mass.
5. A negative electrode comprising:
a negative electrode mixture containing a binder, wherein
the binder contains polyvinylidene fluoride and polyacrylonitrile, with a mass ratio of polyvinylidene fluoride to polyacrylonitrile ranging from 99.9/0.1 to 95.1/4.9.
6. The negative electrode according to claim 5 , wherein a total content of the polyvinylidene fluoride and the polyacrylonitrile relative to the negative electrode mixture is from 2 to 6.5% by mass.
7. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the negative electrode mixture contains a negative electrode active material selected from the group consisting of artificial graphite, natural graphite, easily graphitized carbon and hardly graphitized carbon.
8. The negative electrode according to claim 5 , wherein the negative electrode mixture contains a negative electrode active material selected from the group consisting of artificial graphite, natural graphite, easily graphitized carbon and hardly graphitized carbon.