| 发明名称 |
ENERGY STORAGE DEVICE AND ENERGY STORAGE APPARATUS |
| 摘要 |
An energy storage device includes a positive electrode and a negative electrode. The negative electrode includes graphite and non-graphitizable carbon, and a D50 particle size of the graphite at which a cumulative volume in a particle size distribution of a particle size reaches 50% is 2 μm or more. A ratio of a mass of the non-graphitizable carbon to a total amount of a mass of the graphite and a mass of the non-graphitizable carbon is 5% by mass or more and 45% by mass or less and a ratio of the D50 particle size of the graphite to a D50 particle size of the non-graphitizable carbon is 1.02 or less. |
| 申请公布号 |
US2016351967(A1) |
申请公布日期 |
2016.12.01 |
| 申请号 |
US201615165565 |
申请日期 |
2016.05.26 |
| 申请人 |
GS Yuasa International Ltd. |
发明人 |
KAKO Tomonori;YAMAFUKU Taro;MIYAZAKI Akihiko |
| 分类号 |
H01M10/0587;H01M4/62;H01M4/587;H01M10/0525;H01M4/133 |
主分类号 |
H01M10/0587 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An energy storage device comprising:
a positive electrode; and a negative electrode, wherein the negative electrode comprises graphite and non-graphitizable carbon, a D50 particle size of the graphite at which a cumulative volume in a particle size distribution of a particle size reaches 50% is 2 μm or more, a ratio of a mass of the non-graphitizable carbon to a total amount of a mass of the graphite and a mass of the non-graphitizable carbon is 5% by mass or more and 45% by mass or less, and a ratio of the D50 particle size of the graphite to a D50 particle size of the non-graphitizable carbon is 1.02 or less. |
| 地址 |
Kyoto-shi JP |
