Electrolytic solution for secondary battery, secondary battery, electric power tool, electrical vehicle, and electric power storage system
AssigneeSony Corporation
InventorsMasayuki Ihara, Takehiko Tanaka, Tadahiko Kubota
Life of this patent
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Abstract
A secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt. The nonaqueous solvent contains sulfonic acid anhydrides (disulfonic acid anhydride or sulfonic acid carboxylic acid anhydride). A content of the chlorine ions is 5000 wt ppm or less.
Claims16
An electrolytic solution for a secondary battery containing chlorine ions (Cl—) together with a nonaqueous solvent and an electrolyte salt,
- wherein the nonaqueous solvent contains one or both of sulfonic acidanhydrides shown in Formula 1 and Formula 2, and
- a content of the chlorine ions is 5000 wt ppm or less.
- where X is a divalent hydrocarbon group or a derivative thereof.
- where Y is a divalent hydrocarbon group or a derivative thereof.
A secondary battery comprising:
- a cathode;
- an anode;
- and
- an electrolytic solution,
- wherein the electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt,
- the nonaqueous solvent contains one or both of sulfonic acid anhydrides shown in Formula 1 and Formula 2, and
- a content of the chlorine ions is 5000 wt ppm or less.
- where X is a divalent hydrocarbon group or a derivative thereof.
- where Y is a divalent hydrocarbon group or a derivative thereof.
An electric power tool moving with the use of a secondary battery including a cathode, an anode, and an electrolytic solution as a power source,
- wherein the electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt,
- the nonaqueous solvent contains one or both of sulfonic acid anhydrides shown in Formula 1 and Formula 2, and
- a content of the chlorine ions is 5000 wt ppm or less.
- where X is a divalent hydrocarbon group or a derivative thereof.
- where Y is a divalent hydrocarbon group or a derivative thereof.
An electrical vehicle moving with the use of a secondary battery including a cathode, an anode, and an electrolytic solution as a power source,
- wherein the electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt,
- the nonaqueous solvent contains one or both of sulfonic acid anhydrides shown in Formula 1 and Formula 2, and
- a content of the chlorine ions is 5000 wt ppm or less.
- where X is a divalent hydrocarbon group or a derivative thereof.
- where Y is a divalent hydrocarbon group or a derivative thereof.
An electric power storage system using a secondary battery including a cathode, an anode, and an electrolytic solution as a power storage source,
- wherein the electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt,
- the nonaqueous solvent contains one or both of sulfonic acid anhydrides shown in Formula 1 and Formula 2, and
- a content of the chlorine ions is 5000 wt ppm or less.
- where X is a divalent hydrocarbon group or a derivative thereof.
- where Y is a divalent hydrocarbon group or a derivative thereof.
Dependencies are inferred from the claim text.