| 发明名称 |
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY |
| 摘要 |
The initial charge/discharge efficiency and cycle characteristics of a nonaqueous electrolyte secondary battery are improved. Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, a porous layer placed on the negative electrode, a separator, and a nonaqueous electrolyte. The porous layer has flat voids. The minor axis direction of each flat void is perpendicular to the plane direction of the porous layer and the major axis direction of the flat void is parallel to the plane direction of the porous layer. The ratio of the major axis to the minor axis of the flat void preferably ranges from 1.4 to 2.2. |
| 申请公布号 |
US2015364764(A1) |
申请公布日期 |
2015.12.17 |
| 申请号 |
US201414761740 |
申请日期 |
2014.02.10 |
| 申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
Kobayashi Kei;Hiraoka Tatsuki;Shiraga Masahiro;Sunano Taizou |
| 分类号 |
H01M4/62;H01M10/052;H01M4/36 |
主分类号 |
H01M4/62 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A nonaqueous electrolyte secondary battery comprising:
a positive electrode; a negative electrode; a porous layer placed on the negative electrode; a separator; and a nonaqueous electrolyte, wherein the porous layer has flat voids, the minor axis direction of each flat void is perpendicular to the plane direction of the porous layer, and the major axis direction of the flat void is parallel to the plane direction of the porous layer. |
| 地址 |
Daito-shi, Osaka JP |
