Secondary battery and method for restoring capacity of secondary battery

摘要

An exterior body of a secondary battery includes an insertion portion for insertion of a third electrode including metal lithium. An injection and expelling portion through which an electrolyte solution can be replaced is further provided. Specifically, a nonaqueous secondary battery includes a positive electrode, a negative electrode, an electrolyte solution, a separator, and an exterior body covering the positive electrode, the negative electrode, and the electrolyte solution. The exterior body includes a positive electrode terminal to which the positive electrode is electrically connected, a negative electrode terminal to which the negative electrode is electrically connected, and an insertion portion for insertion of a third electrode including metal lithium.

主权项

1. A nonaqueous secondary battery comprising:
a positive electrode; a negative electrode; a separator between the positive electrode and the negative electrode; an electrolyte solution; and an exterior body surrounding the positive electrode, the negative electrode, the separator, and the electrolyte solution, wherein the exterior body comprises:
a positive electrode terminal to which the positive electrode is electrically connected;a negative electrode terminal to which the negative electrode is electrically connected; andan insertion portion configured to be inserted with a third electrode,wherein the third electrode comprises:
an outer tube;an inner tube inside the outer tube; anda metal lithium inside the outer tube, the metal lithium electrically connected to the inner tube,wherein the outer tube is configured to prevent the metal lithium from contacting an air,wherein the inner tube is configured to inject the metal lithium from the outer tube by pressing the inner tube.