发明名称 |
POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY |
摘要 |
To provide a positive electrode for non-aqueous electrolyte battery free from internal short circuit and large in charging and discharging capacity.;A positive electrode for non-aqueous electrolyte battery includes a positive electrode collector, a coated film of a positive electrode active material formed on the collector, an non-uniform area formed along an end portion of the coated film, in which a thickness of the positive active material changes, and protruding insulators erected on the non-uniform area and a part of a surface of the collector adjacent to the non-uniform area. The protruding insulators erected on a surface of the non-uniform area are mutually independent and disposed at an arrangement density low enough to allow transfer of a battery reactive material through the surface of the non-uniform area. The protruding insulators erected on a part of the surface of the collector are disposed at an arrangement density higher than that of the protruding insulators erected on a surface of the non-uniform area. The present invention further provides a non-aqueous electrolyte secondary battery using the above positive electrode. |
申请公布号 |
US2015125732(A1) |
申请公布日期 |
2015.05.07 |
申请号 |
US201314398998 |
申请日期 |
2013.05.22 |
申请人 |
NEC ENERGY DEVICES, LTD. |
发明人 |
Ohta Tomoyuki;Ukita Akio;Anan Takayoshi |
分类号 |
H01M2/18;H01M10/0525 |
主分类号 |
H01M2/18 |
代理机构 |
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代理人 |
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主权项 |
1. A positive electrode for non-aqueous electrolyte battery, characterized by comprising:
a positive electrode collector; a coated film of a positive electrode active material formed on the collector; an non-uniform area formed along an end portion of the coated film, in which a thickness of the positive active material changes; and protruding insulators erected on the non-uniform area and a part of a surface of the collector adjacent to the non-uniform area, wherein the protruding insulators erected on a surface of the non-uniform area are mutually independent and disposed at an arrangement density low enough to allow transfer of a battery reactive material through the surface of the non-uniform area, and the protruding insulators erected on a part of the surface of the collector are disposed at an arrangement density higher than that of the protruding insulators erected on a surface of the non-uniform area. |
地址 |
Kanagawa JP |