| 发明名称 | Negative electrode contacting silicon oxide active material layers for lithium secondary battery and method for producing the same | ||
| 摘要 | The negative electrode for a lithium secondary battery includes: a current collector 11 having a plurality of bumps 11a on a surface thereof; a first active material layer formed on the current collector 11; and a second active material layer 15 disposed on the first active material layer 12 and including a plurality of active material particles 14. Each of the plurality of active material particles 14 is located on a corresponding bump 11a of the current collector 11, and each of the first active material layer 12 and the plurality of active material particles 14 has a chemical composition represented as SiOx (0<x<1). | ||
| 申请公布号 | US8771874(B2) | 申请公布日期 | 2014.07.08 |
| 申请号 | US200812530719 | 申请日期 | 2008.03.13 |
| 申请人 | Panasonic Corporation | 发明人 | Yamamoto Taisuke;Iwamoto Kazuya;Kogetsu Yasutaka |
| 分类号 | B05D5/12;C23C14/16;H01M4/134;H01M10/0525 | 主分类号 | B05D5/12 |
| 代理机构 | McDermott Will & Emery LLP | 代理人 | McDermott Will & Emery LLP |
| 主权项 | 1. A negative electrode for a lithium secondary battery, comprising: a current collector having a plurality of bumps on a surface thereof; a first active material layer formed on the current collector; and a second active material layer being formed on the first active material layer and including a plurality of active material particles, wherein: each of the plurality of active material particles is located on a corresponding bump of the current collector, the first active material layer has a chemical composition represented as SiOx, where 0.1≦x<1, and the plurality of active material particles have a chemical composition represented as SiOy, where 0<y<1, an area of contact between the current collector and the first active material layer is larger than an area of contact between the plurality of active material particles and the first active material layer, and the plurality of active material particles are arranged with spaces therebetween and do not contact with each other. | ||
| 地址 | Osaka JP | ||