| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary sodium battery capable of both a battery efficiency improvement and a large-capacity proper for utilizing in such as a power storage apparatus and an electric vehicle. SOLUTION: The secondary sodium battery includes a negative pole chamber 4 storing a liquid sodium 7, a positive pole chamber 5 storing a positive active material 14, and a solid electrolyte bag pipe 1 separating the negative pole chamber 4 and the positive pole chamber 5. The secondary sodium battery is characterized with placing the solid electrolyte bag pipe 1 in a horizontal direction or a diagonal direction, installing to laminate carbon fiber mat in an axis direction of the solid electrolyte bag pipe 1 as a porous conductive material 12 between a side surface of the solid electrolyte bag pipe 1 in the positive pole chamber 5 and a positive pole bath 3 comprising the positive pole chamber 5, or a current collector 11 provided in the positive pole chamber 5.
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