发明名称 Positive electrode plate for nonaqueous electrolyte secondary battery, method for manufacturing the positive electrode plate, nonaqueous electrolyte secondary battery, and method for manufacturing the battery
摘要 A positive electrode plate for a nonaqueous electrolyte secondary battery, the positive electrode plate including: a positive electrode substrate; a positive electrode active material layer formed on the positive electrode substrate; and a positive electrode substrate exposed portion on which the positive electrode active material layer is not formed, the positive electrode substrate exposed portion having a region that is adjacent to the positive electrode active material layer and has a protective layer formed thereon, the positive electrode active material layer and the protective layer containing polyvinylidene fluoride, and the weight average molecular weight Mw of the polyvinylidene fluoride contained in the protective layer being larger than the weight average molecular weight Mw of the polyvinylidene fluoride contained in the positive electrode active material layer. Thus, a high reliable nonaqueous electrolyte secondary battery where the widths of the positive electrode material and the protective layers are stable can be provided.
申请公布号 US9231245(B2) 申请公布日期 2016.01.05
申请号 US201214006828 申请日期 2012.03.15
申请人 SANYO Electric Co., Ltd. 发明人 Matsuda Tetsuya;Ogawa Naoki;Minami Keisuke;Fujihara Toyoki;Nohma Toshiyuki
分类号 H01M4/62;H01M4/139;H01M4/36;H01M4/02 主分类号 H01M4/62
代理机构 Westerman, Hattori, Daniels & Adrian, LLP 代理人 Westerman, Hattori, Daniels & Adrian, LLP
主权项 1. A positive electrode plate for a nonaqueous electrolyte secondary battery, the positive electrode plate comprising: a positive electrode substrate; a positive electrode active material layer formed on the positive electrode substrate; and a positive electrode substrate exposed portion on which the positive electrode active material layer is not formed, the positive electrode substrate exposed portion having a region that is adjacent to the positive electrode active material layer and has a protective layer formed thereon, the positive electrode active material layer and the protective layer containing polyvinylidene fluoride, and the weight average molecular weight Mw of the polyvinylidene fluoride contained in the protective layer being larger than the weight average molecular weight Mw of the polyvinylidene fluoride contained in the positive electrode active material layer.
地址 Osaka JP