| 发明名称 | Power storage device | ||
| 摘要 | A power storage device which has high charge/discharge capacity and less deterioration in battery characteristics due to charge/discharge and can perform charge/discharge at high speed is provided. A power storage device includes a negative electrode. The negative electrode includes a current collector and an active material layer provided over the current collector. The active material layer includes a plurality of protrusions protruding from the current collector and a graphene provided over the plurality of protrusions. Axes of the plurality of protrusions are oriented in the same direction. A common portion may be provided between the current collector and the plurality of protrusions. | ||
| 申请公布号 | US8822088(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201213610951 | 申请日期 | 2012.09.12 |
| 申请人 | Semiconductor Energy Laboratory Co., Ltd. | 发明人 | Tajima Ryota;Yamazaki Shunpei;Oguni Teppei;Osada Takeshi;Sasagawa Shinya;Kuriki Kazutaka |
| 分类号 | H01M4/36;H01M10/0525;H01M4/62;B82Y30/00;H01M4/1395;H01M4/38;H01M4/134;H01M10/46 | 主分类号 | H01M4/36 |
| 代理机构 | Nixon Peabody LLP | 代理人 | Nixon Peabody LLP ;Costellia Jeffrey L. |
| 主权项 | 1. A power storage device comprising a negative electrode, the negative electrode comprising: an active material layer comprising: a common portion; anda plurality of protrusions protruding from the common portion, and a layer including a graphene over the common portion and the plurality of protrusions. | ||
| 地址 | Kanagawa-ken JP | ||