INORGANIC NONAQUEOUS ELECTROLYTE BATTERY

• Main Authors: HISATOMI KAORU, SASAMA HIROSHI, ISHIDA KAZUO, SEKIDO SHINTAROU
• Format: Patent
• Language: English
• Published: 29.01.1991
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE:To obtain a battery in which decrease in discharge performance in high rate discharge is prevented, voltage drop in closed circuits due to storage is decreased, and internal short circuit caused by vibration is decreased by using a specific nonwoven fabric together with a specific copolymer as a separator. CONSTITUTION:An inorganic nonaqueous electrolyte battery consist of a negative electrode made of an alkali metal, a positive electrode made of a carbon porous molding, an electrolyte 5 in which an oxyhalogen compound which is a liquid at normal temperature is used as a positive active material and an electrolyte solvent, and a separator. The separator 4 consists of a glass fiber nonwoven fabric 4a and an ethylene-tetrafluoroethylene copolymer microporous film 4b. By the function of the film 4b, voltage drop in closed circuits due to storage is decreased and internal short circuit caused by vibration is also decreased. By the three-dimensional structure of the nonwoven fabric 4a, electrolyte retention capability is increased and discharge performance in high rate discharge is increased.