ELECTRONIC DEVICE
First Claim
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1. A method of charging an electronic device comprising:
- a first electrode;
a second electrode; and
an electrolytic solution between the first electrode and the second electrode,the method comprising;
supplying a first current that flows between the first electrode and the second electrode in a first direction during a first period; and
supplying a second current that flows between the first electrode and the second electrode in a second direction during a second period;
wherein the first direction and the second direction are opposite to each other,wherein a reaction product grows on the first electrode by the supplying the first current, andwherein the reaction product on the first electrode is dissolved by supplying the second current.
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Abstract
Degradation of a battery is prevented or the degree of the degradation is reduced, and charge and discharge performance of the battery is maximized and maintained for a long time. A reaction product, which is formed on an electrode surface and causes various malfunctions and degradation of a battery such as a lithium-ion secondary battery, is dissolved by application of electrical stimulus, specifically, by applying a signal to supply a current reverse to a current with which the reaction product is formed (reverse pulse current).
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Citations
19 Claims
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1. A method of charging an electronic device comprising:
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a first electrode; a second electrode; and an electrolytic solution between the first electrode and the second electrode, the method comprising; supplying a first current that flows between the first electrode and the second electrode in a first direction during a first period; and supplying a second current that flows between the first electrode and the second electrode in a second direction during a second period; wherein the first direction and the second direction are opposite to each other, wherein a reaction product grows on the first electrode by the supplying the first current, and wherein the reaction product on the first electrode is dissolved by supplying the second current. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electronic device comprising:
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a first electrode; a second electrode; and an electrolytic solution between the first electrode and the second electrode, wherein a reaction product that grows on the first electrode due to a first current that flows between the first electrode and the second electrode for a first period is dissolved by supplying a second current reverse to the first current for a second period. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An electronic device comprising:
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a first electrode; a protective film that covers part of the first electrode; a second electrode; and an electrolytic solution between the first electrode and the second electrode, wherein a reaction product that grows from a region of a surface of the first electrode that is not covered with the protective film due to a first current that flows between the first electrode and the second electrode for a first period is dissolved by supplying a second current reverse to the first current for a second period. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification