发明授权
- 专利标题: Production method of non-aqueous electrolyte secondary battery
- 专利标题(中): 非水电解质二次电池的制造方法
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申请号: US11124264申请日: 2005-05-09
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公开(公告)号: US07767339B2公开(公告)日: 2010-08-03
- 发明人: Kohei Suzuki , Masao Fukunaga , Toshihide Murata , Kazunori Kubota , Tsumoru Ohata
- 申请人: Kohei Suzuki , Masao Fukunaga , Toshihide Murata , Kazunori Kubota , Tsumoru Ohata
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2001-280360 20010914; JP2002-060277 20020306
- 主分类号: H01M4/48
- IPC分类号: H01M4/48 ; H01M4/62 ; H01M6/14 ; H01M10/058
摘要:
A method for producing a non-aqueous electrolyte secondary battery comprising the steps of: (i) mixing a positive electrode active material, a first binder A and a dispersion medium to prepare a paste A, the active material comprising a lithium-containing transition metal oxide; (ii) mixing a conductive agent, a second binder B and a dispersion medium to prepare a paste B, the conductive agent comprising carbon black; (iii) mixing the paste A and the paste B to prepare a positive electrode material paste C; (iv) applying the positive electrode material paste C onto a positive electrode core member and rolling and drying the resultant member to prepare a positive electrode; and (v) fabricating a battery using the positive electrode, a negative electrode and a non-aqueous electrolyte, wherein contact angle θA between the non-aqueous electrolyte and the binder A and contact angle θB between the non-aqueous electrolyte and the binder B satisfy the formula (1): θB−θA≧15°.
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