
基本信息:
- 专利标题: 一种SEI膜、制备方法及碱金属电池
- 专利标题(英):SEI film, preparation method and alkali metal battery
- 申请号:CN201811386608.7 申请日:2018-11-20
- 公开(公告)号:CN109638346A 公开(公告)日:2019-04-16
- 发明人: 陈楠 , 陈人杰 , 李丽 , 温子越 , 赵娜娜 , 吴锋 , 官亦标 , 沈进冉 , 郭翠静
- 申请人: 北京理工大学 , 中国电力科学研究院有限公司 , 国家电网有限公司 , 国网浙江省电力有限公司
- 申请人地址: 北京市海淀区中关村南大街5号; ; ;
- 专利权人: 北京理工大学,中国电力科学研究院有限公司,国家电网有限公司,国网浙江省电力有限公司
- 当前专利权人: 北京理工大学,中国电力科学研究院有限公司,国家电网有限公司,国网浙江省电力有限公司
- 当前专利权人地址: 北京市海淀区中关村南大街5号; ; ;
- 代理机构: 北京工信联合知识产权代理有限公司
- 代理人: 胡秋立
- 主分类号: H01M10/056
- IPC分类号: H01M10/056 ; H01M10/052 ; H01M10/054
The invention provides an SEI film, a preparation method and an alkali metal battery. A membrane raw material comprises the following components of core-shell structure SiO2 particles and an electrolyte solvent, and based on 100% of the total mass of the raw material composition, the core-shell structure SiO2 particles account for 50-80% of the total mass of the raw material composition, and the electrolyte solvent accounts for 20-50% of the total mass of the raw material composition. The SEI film provided by the invention has the characteristic of single ion migration, and formation of spacecharges can be delayed, so that the ion transmission rate is increased. In addition, the SEI film dose not need lithium salts and sodium salts, such as LiPF6, LiTFSI, NaPF6, NaTFSI and the like, SiO2(Li < + >) and SiO2 (Na < + >) particles can provide Li < + > and Na < + > for conduction, ,. Anions in the SEI membrane are limited on SiO2 particles through chemical bonds, so that the migration number of Li < + > or Na < + > is favorably increased, and the migration number of Li < + > is close to 1, and the migration number of Na < + > is close to 1.
公开/授权文献:
- CN109638346B 一种SEI膜、制备方法及碱金属电池 公开/授权日:2021-11-16
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 |
------H01M10/00 | 二次电池;及其制造 |
--------H01M10/05 | .非水电解质蓄电池 |
----------H01M10/056 | ..以用作电解质的材料为特征的,例如混合无机/有机电解质 |