Organic electrolytic cell

Abstract

Abstract PURPOSE:To improve stocking performance of cell by adding high water absorption polymer mainly composed of vinyl-alcohol acrylic acid salt copolymer as dehydrating agent to positive electrode active substance mainly composed of manganese dioxide thereby abosrbing micro amount of water contained in positive electrode active substance. CONSTITUTION:Manganese dioxide is gamma-type containing 5-6wt% of water, which is thermally processed in dry air environment under temperature of 300-450 deg.C for eight hours then blocked from outer air and cooled gradually thereafter added with proper amount of dehydrating agent and mixed while further mixed with acetylene black and fluorine resin then dried for two hours under temperature of 250 deg.C to produce positive electrode active substance 4. High water absorption polymer mainly composed of vinyl-alcohol acrylic acis salt copolymer is employed as dehydrating agent. Consequently water contained in manganese dioxide of positive electrode active substance 4 is adsorbed by dehydrating agent prior to go to lithium face of negative electrode active substance 1 to prevent production of gas and deterioration of lithium face.

Inventors

• 👤 Takakiyo Umeda
• 👤 梅田　孝清

Bibliographic Details