METHOD OF PRODUCING LITHIUM-ION SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY, AND CAPACITY RESTORER FOR LITHIUM-ION SECONDARY BATTERY

• Main Authors: YAMAGUCHI HIROYUKI, KIKUCHI KYOKO, OKAYAMA SHINOBU, FUJITA MASAHIRO
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A method of producing a lithium-ion secondary battery includes the following (Alpha) and (Beta): (Alpha) preparing a lithium-ion secondary battery, the lithium-ion secondary battery including at leasta positive electrode, a negative electrode, and an electrolyte solution; and (Beta) adding a zwitterionic compound to the electrolyte solution. The negative electrode includes at least a negative electrode active material and a film. The film is formed on a surface of the negative electrode active material. The film contains a lithium compound. The zwitterionic compound contains a phosphonium cation or an ammonium cation and a carboxylate anion in one molecule. 一种锂离子二次电池的制造方法，包含以下的(α)和(β)。(α)准备至少包含正极、负极和电解液的锂离子二次电池。(β)向电解液中添加两性离子化合物。负极至少包含负极活性物质和被膜。被膜形成于负极活性物质的表面。被膜包含锂化合物。两性离子化合物在1个分子内包含鏻阳离子或铵阳离子、和羧酸根阴离子。