发明名称 |
Redox shuttles for overcharge protection of lithium batteries |
摘要 |
The present invention is generally related to electrolytes containing novel redox shuttles for overcharge protection of lithium-ion batteries. The redox shuttles are capable of thousands hours of overcharge tolerance and have a redox potential at about 3-5.5 V vs. Li and particularly about 4.4-4.8 V vs. Li. Accordingly, in one aspect the invention provides electrolytes comprising an alkali metal salt; a polar aprotic solvent; and a redox shuttle additive that is an aromatic compound having at least one aromatic ring with four or more electronegative substituents, two or more oxygen atoms bonded to the aromatic ring, and no hydrogen atoms bonded to the aromatic ring; and wherein the electrolyte solution is substantially non-aqueous. Further there are provided electrochemical devices employing the electrolyte and methods of making the electrolyte.
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申请公布号 |
US7851092(B2) |
申请公布日期 |
2010.12.14 |
申请号 |
US20060366891 |
申请日期 |
2006.03.01 |
申请人 |
U CHICAGO ARGONNE LLC |
发明人 |
AMINE KHALIL;CHEN ZONGHAI;WANG QINGZHENG |
分类号 |
H01M4/50;H01M4/505;H01M4/52;H01M4/525;H01M4/58;H01M10/0525;H01M10/0567;H01M10/0568;H01M10/0569;H01M10/36 |
主分类号 |
H01M4/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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