Non-aqueous electrolytic solution and non-aqueous electrolyte secondary battery using the same
An object of the present invention 1 is to provide a non-aqueous electrolyte secondary battery having excellent general performance balance between durability performance and properties, such as a capacity, a resistance, and output characteristics. The present invention 1 is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises: a positive electrode being capable of having occluded therein and releasing metal ions; a negative electrode being capable of having occluded therein and releasing metal ions, and comprising a negative electrode active material containing metal particles capable of forming an alloy together with Li and graphite particles; and a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution contains a compound represented by the general formula (A), and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
1. A non-aqueous electrolyte secondary battery, comprising:
a positive electrode being capable of having occluded therein and releasing metal ions;
a negative electrode being capable of having occluded therein and releasing metal ions, and comprising a negative electrode active material containing metal particles capable of forming an alloy together with Li and graphite particles; and
a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent,
wherein the non-aqueous solvent is at least one selected from the group consisting of a cyclic carbonate having no fluorine atom, a linear carbonate, a cyclic and linear carboxylate, an ether compound, and a sulfone compound;
wherein the non-aqueous electrolytic solution comprises a compound represented by formula (A):
wherein R 1 to R 3 are the same or different, and each is an organic group having 1 to 20 carbon atoms, with the proviso that at least one of R 1 to R 3 is an organic group having a carbon-carbon unsaturated bond,
wherein the metal particles capable of forming an alloy together with Li are Si or a Si metal oxide;
wherein the negative electrode active material containing the metal particles capable of forming an alloy together with Li and the graphite particles is a composite and/or a mixture of a metal and/or a metal compound and the graphite particles; and
wherein the amount of the contained metal particles capable of forming an alloy together with Li is 0.1 to 25% by mass, based on the total mass of the metal particles capable of forming an alloy together with Li and the graphite particles.
2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein, in the formula (A), R 1 to R 3 are the same or different, and each is an organic group having 1 to 10 carbon atoms.
3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the organic group having a carbon-carbon unsaturated bond is an allyl group.
4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the organic group having a carbon-carbon unsaturated bond is a methallyl group.
5. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the amount of the added compound represented by the formula (A) is 0.01 to 10.0% by mass, based on the mass of the non-aqueous electrolytic solution.
6. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution further comprises at least one compound selected from a cyclic carbonate having a carbon-carbon unsaturated bond and a cyclic carbonate having a fluorine atom.
7. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the metal particles capable of forming an alloy together with Li are Si.
8. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the metal particles capable of forming an alloy together with Li are a Si metal oxide.
9. The non-aqueous electrolyte secondary battery according claim 1 , wherein the amount of the contained metal particles capable of forming an alloy together with Li is 0.1 to 20% by mass, based on the total mass of the metal particles capable of forming an alloy together with Li and the graphite particles.
10. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the amount of the contained metal particles capable of forming an alloy together with Li is 0.1 to 15% by mass, based on the total mass of the metal particles capable of forming an alloy together with Li and the graphite particles.
11. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the amount of the contained metal particles capable of forming an alloy together with Li is 0.1 to 10% by mass, based on the total mass of the metal particles capable of forming an alloy together with Li and the graphite particles.
12. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the compound represented by formula (A) is a compound having formula (A)(i), (A)(ii), or (A)(iii):
13. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the compound of formula (A) is a compound of formula (A)(i):