SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a secondary battery capable of reducing deterioration of battery performance.SOLUTION: A secondary battery comprises: a positive electrode and a negative electrode; a barrier film; a reaction chamber; an electrolytic solution; a first generation part; and a first supply part. The barrier film is arranged between the positive electrode and the negative electrode. The reaction chamber houses the positive electrode and the negative electrode. The electrolytic solution is housed in an inner part of the reaction chamber, and contacts with the positive electrode and the negative electrode. The first generation part generates first bubble containing oxygen into the electrolytic solution between the positive electrode and the barrier film. The first supply part supplies a first gas to the first generation part.SELECTED DRAWING: Figure 1 【課題】電池性能の低下を低減することができる二次電池を提供する。【解決手段】実施形態に係る二次電池は、正極および負極と、隔膜と、反応室と、電解液と、第１発生部と、第１供給部とを備える。隔膜は、正極と負極との間に配置される。反応室は、正極および負極を収容する。電解液は、反応室の内部に収容され、正極および負極に接触する。第１発生部は、正極と隔膜との間の電解液に酸素を含有する第１気泡を発生させる。第１供給部は、第１発生部に第１気体を供給する。【選択図】図１