Title:
【発明の名称】非水電解液二次電池用正極活物質の製造方法
Document Type and Number:
Japanese Patent JP2599975
Kind Code:
B2
Abstract:
PURPOSE:To have a secondary battery having a high discharge voltage, large discharge capacity, and large energy density by using a positive pole active substance, which includes lithium in electrolytic manganese dioxide. CONSTITUTION:A small amount of acetylene black is added to powder of electrolytic manganese dioxide (gamma-type crystal structure), and upon uniformly mixed, the mixture is subjected to pressure molding on a Ni-meshed grid. As a positive electrode this is combined with a mating lithium electrode and immersed in an electrolyte obtained by dissolving hexafluoric lithium arsenate in propylene carbonate, wherein current is supplied in the direction in which lithium is electroeducted onto a manganese dioxide pos. electrode. Then the manganese dioxide electrode is taken out, washed with propylene carbonate several times, removed from the grid, and crushed. The resultant powder is put in a crucible and heated in an electric furnace under 350 deg.C for 5hrs.
Inventors:
Satoshi Saito
Application Number:
JP23803688A
Publication Date:
April 16, 1997
Filing Date:
September 22, 1988
Export Citation:
Assignee:
Nippon Battery Co., Ltd.
International Classes:
H01M4/40; H01M4/02; H01M4/04; H01M4/36; H01M4/50; H01M4/505; H01M10/052; (IPC1-7): H01M4/50
Domestic Patent References:
| JPS62108455A |