POWER STORAGE DEVICE AND METHOD FOR CHARGING THE SAME
First Claim
1. A power storage device comprising:
- a positive electrode;
a negative electrode;
a third electrode comprising a material which has a specific surface area of 500 m2/g or larger; and
an electrolyte.
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Accused Products
Abstract
A decrease in the capacity of a power storage device is inhibited by adjusting or reducing imbalance in the amount of inserted and extracted carrier ions between positive and negative electrodes, which is caused by decomposition of an electrolyte solution of the negative electrode. Further, the capacity of the power storage device can be restored. Furthermore, impurities in the electrolyte solution can be decomposed with the use of the third electrode. A power storage device including positive and negative electrodes, an electrolyte, and a third electrode is provided. The third electrode has an adequate electrostatic capacitance. The third electrode can include a material with a large surface area. In addition, a method for charging the power storage device including the steps of performing charging by applying a current between the positive and negative electrodes, and performing additional applying a current between the third electrode and the negative electrode is provided.
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Citations
17 Claims
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1. A power storage device comprising:
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a positive electrode; a negative electrode; a third electrode comprising a material which has a specific surface area of 500 m2/g or larger; and an electrolyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for charging a power storage device, comprising a positive electrode, a negative electrode, and a third electrode, the method comprising the steps of:
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charging the power storage device by applying a current between the positive electrode and the negative electrode; and performing additional charging by applying a current between the third electrode and the negative electrode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification