Secondary battery, electronic device, electric power tool, electrical vehicle, and electric power storage system
View Patent ↗A secondary battery includes a cathode, an anode, and an electrolytic solution. The anode or the electrolytic solution, or both contain a metal salt including an unsaturated carbon bond.
1. A secondary battery comprising: a cathode including a cathode active material; an anode including an anode active material; and
an electrolytic solution including an electrolytic salt, an electrolytic solvent, and an alkali metal salt,
wherein the electrolytic solvent includes 4-fluoro-1,3-dioxolane-2-one, wherein the alkali metal salt is dilithium acetylide in an amount in a range of 0.01 weight percent to 2 weight percent, and wherein the anode includes the alkali metal salt.
2. The secondary battery according to claim 1 , wherein the amount of dilithium acetylide in a range of 0.01 weight percent to 0.5 weight percent.
3. The secondary battery according to claim 1 , wherein the electrolytic salt is LiPF 6 .
4. The secondary battery according to claim 1 , wherein the electrolytic solvent further includes ethylene carbonate and diethyl carbonate.
5. The secondary battery according to claim 1 , wherein the cathode active material includes LiCoO 2 .
6. The secondary battery according to claim 1 , wherein the anode active material includes a carbon material.
7. The secondary battery according to claim 6 , wherein the carbon material includes a mesocarbon microbead.
8. An electronic device comprising a secondary battery according to claim 1 .
9. An electronic power tool comprising a secondary battery according to claim 1 .
10. An electric vehicle comprising a secondary battery according to claim 1 .
11. An electric power storage system comprising a secondary battery according to claim 1 .