SODIUM SECONDARY BATTERY

• Main Authors: NAKATSUTSUMI TAKAYUKI, SUZUKI HIROTETSU, OTSUKA TOMO, HOJO NOBUHIKO
• Format: Patent
• Language: English; Japanese
• Published: 08.10.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a sodium secondary battery capable of being stably charged/discharged.SOLUTION: The sodium secondary battery includes: a cathode; an anode; and nonaqueous electrolyte. A nonaqueous solvent included in the nonaqueous electrolyte, includes a chain carboxylic acid ester which has a fluoro group expressed by a general formula (1), where: Ris an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; Rto Rare H, aromatic group, unsaturated aliphatic group or saturated aliphatic group; at least one of Rto Rare one or more fluoro groups. 【課題】安定的に充放電できるナトリウム二次電池を提供する。【解決手段】正極と、負極と、非水電解液とを備え、非水電解液に含まれる非水溶媒が、一般式（１）で表されるフルオロ基を有する鎖状カルボン酸エステルを含有するナトリウム二次電池（Ｒ1は芳香族基、不飽和脂肪族基又は飽和脂肪族基；Ｒ2〜Ｒ4はＨ、芳香族基、不飽和脂肪族基又は飽和脂肪族基；Ｒ1〜Ｒ4の少なくとも１つは１以上のフルオロ基）【選択図】なし