POWER ACCUMULATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electrolyte easily produced at low cost, and a power accumulation device including such an electrolyte.

SOLUTION: The power accumulation device includes a positive electrode having a positive electrode current collector and a positive electrode active material, a negative electrode having a negative electrode current collector and a negative electrode active material, and an electrolyte having a 1-piperidine-1-propanesulfonic acid or a 1-piperidine-1-butanesulfonic acid which is provided between the positive electrode and the negative electrode. The capacitance can be increased when water is added to the obtained electrolyte and the temperature of the power accumulation device rises.

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