基本信息:
- 专利标题： 磷酸铁锂颗粒粉末及其制造方法、正极材料片和二次电池
- 专利标题（英）：Lithium iron phosphate powder and manufacturing method thereof, cathode sheet, and secondary battery
- 申请号：CN201510896278.6 申请日：2009-03-26
- 公开(公告)号：CN105355920A 公开(公告)日：2016-02-24
- 发明人： 三岛祐司 , 本田晋吾 , 河野芳辉 , 佐藤幸太 , 冈崎精二 , 片元勉
- 申请人： 户田工业株式会社
- 申请人地址： 日本广岛县
- 专利权人： 户田工业株式会社
- 当前专利权人： 户田工业株式会社
- 当前专利权人地址： 日本广岛县
- 代理机构： 北京尚诚知识产权代理有限公司
- 代理人： 龙淳; 邸万杰
- 优先权： 2008-094056 2008.03.31 JP
- 分案原申请号： 2009801111827 2009.03.26
- 主分类号： H01M4/58
- IPC分类号： H01M4/58 ; C01B25/45
The present invention relates to a process for producing lithium iron phosphate particles having an olivine type structure, comprising a first step of mixing an iron oxide or a hydrous oxide as an iron raw material which comprises at least one element selected from the group consisting of Na, Mg, Al, Si, Cr, Mn and Ni in an amount of 0.1 to 2 mol% for each element based on Fe, and a carbon element C in an amount of 5 to 10 mol% based on Fe, and has a content of Fe 2+ of not more than 40 mol% based on an amount of Fe and an average primary particle diameter of 5 to 300 nm, with a lithium raw material and a phosphorus raw material; a second step of controlling agglomerates diameter in the resulting mixture is 0.3 to 5.0 [mu]m; and a third step of sintering the mixture obtained in the second step in an inert gas or reducing gas atmosphere having an oxygen concentration of not more than 0.1% at a temperature of 250 to 750 DEG C, lithium iron phosphate particles, a cathode sheet using the lithium iron phosphate particles, and a non-aqueous solvent-based secondary battery.
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 |
| ----------H01M4/06 | ..一次电池的电极 |
| ------------H01M4/58 | ...除氧化物或氢氧化物之外的无机化合物的 |