NONAQUEOUS ELECTROLYTE SECONDARY BATTERY,申请号JP19890137273-传众专利搜索

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

申请公布号：JPH031443(A)

申请号：JP19890137273

申请日期：1989.05.30

申请公布日期：1991.01.08

申请人：

TOSHIBA BATTERY CO LTD

发明人：TSUCHIYAMA HITOSHI;IKEDA KATSUHARU;TSUCHIYA KENJI;INADA KUNIAKI

分类号：H01M10/05;H01M4/02;H01M4/48;H01M10/0566

主分类号：H01M10/05

摘要：PURPOSE:To obtain a long life nonaqueous electrolyte secondary battery by using a molding mainly comprising a mixture of amorphous vanadium pentoxide powder or amorphous vanadium pentoxide-phosphorus pentoxide mixture powder and elastic graphite powder in a positive electrode. CONSTITUTION:Vanadium pentoxide or a mixture of vanadium pentoxide and phophorus is melted then quenched to make powder. 0.5-5wt% elastic graphite powder whose recovery factor to 20% compressibility is 100% and that to 90% compressibility is 70% is mixed to the powder obtained, and the mixture is crushed into 3-100mum powder. 1-15wt% polyethylene serving as a binder is added to the powder, then the mixture is formed in a sheet and a porous positive electrode 2 is obtained. A blanked lithium metal sheet is used as a negative electrode 5, and a porous polypropylene thin film is used as a separator 4. Generation of spaces between the positive electrode and the separator and between the separator and the negative electrode attendant on the progress of charge discharge cycles is avoided and internal resistance is made constant.