基本信息:
- 专利标题： 锂二次电池用电极、锂二次电池及其制造方法
- 专利标题（英）：Electrode for lithium rechargeable battery, lithium rechargeable battery, and process for producing said lithium rechargeable battery
- 申请号：CN200680041330.9 申请日：2006-11-07
- 公开(公告)号：CN101300694B 公开(公告)日：2010-06-16
- 发明人： 高桥庆一 , 宇贺治正弥 , 古结康隆 , 美浓辰治 , 长尾宣明 , 长谷川正树
- 申请人： 松下电器产业株式会社
- 申请人地址： 日本大阪府
- 专利权人： 松下电器产业株式会社
- 当前专利权人： 松下电器产业株式会社
- 当前专利权人地址： 日本大阪府
- 代理机构： 北京市中咨律师事务所
- 代理人： 段承恩; 田欣
- 优先权： 322095/2005 2005.11.07 JP
- 国际申请： PCT/JP2006/322147 2006.11.07
- 国际公布： WO2007/052803 JA 2007.05.10
- 进入国家日期： 2008-05-05
- 主分类号： H01M4/02
- IPC分类号： H01M4/02 ; H01M4/04 ; H01M4/38 ; H01M4/48 ; H01M4/58 ; H01M10/40
This invention provides an electrode for a lithium rechargeable battery comprising a sheet-shaped current collector and an active material layer supported on the current collector, wherein the activematerial layer comprises a plurality of columnar particles having at least one bend which can occlude and release lithium. There is also provided a process for producing an electrode for a lithium rechargeable battery, comprising a first step of allowing active material particles to enter into a sheet-shaped current collector at a first incident angle of +10 to +60 to deposit the active materialand a second step of allowing active material particles to enter into the sheet-shaped current collector at a second incident angle of -10 to -60 to deposit the active material. According to the above constitution, the stress which the columnar particles undergo by the expansion and shrinkage of the active material layer can be dispersed in the bend. Further, as viewed from a direction normal to a counter electrode, an exposed part in the current collector constituting the electrode can be significantly reduced. As a result, the amount of lithium, which is supplied from the counter electrode during charging, precipitated in the exposed part in the current collector can be reduced.
公开/授权文献:
- CN101300694A 锂二次电池用电极、锂二次电池及其制造方法 公开/授权日：2008-11-05
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01M | 用于直接转变化学能为电能的方法或装置，例如电池组 |
| ------H01M4/00 | 电极 |
| --------H01M4/02 | .由活性材料组成或包括活性材料的电极 |