| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sodium secondary battery using a graphite material for a negative electrode active material.SOLUTION: A sodium secondary battery 100 includes: a positive electrode 13 having a positive electrode active material capable of occluding and discharging sodium ions; a negative electrode 16 having a negative electrode active material capable of occluding and discharging the sodium ions; and a non-aqueous electrolyte. The negative electrode active material includes a graphite material and the non-aqueous electrolyte includes a non-aqueous solvent containing ether, and sodium salt.</p> |
