| 摘要 |
PROBLEM TO BE SOLVED: To provide a sodium secondary battery excellent in cycle characteristics.SOLUTION: A sodium secondary battery includes: a positive electrode containing a substance capable of inserting and desorbing sodium ions; a negative electrode containing sodium metal; and an electrolyte having sodium ion electric conductivity. The electrolyte includes fluoroethylene carbonate (FEC), diethyl carbonate (DEC), or dimethyl carbonate (DMC).SELECTED DRAWING: Figure 1 |
