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Electrolytes for a metal-ion battery cell with high-capacity, micron-scale, volume-changing anode particles

專利號
US11177509B2
公開日期
2021-11-16
申請人
Sila Nanotechnologies, Inc.（US CA Alameda）
發(fā)明人
Gleb Yushin; Ashleigh Ward
IPC分類
H01M10/0569; H01M4/525; H01M4/505; H01M10/0568; H01M10/0525; H01M4/38
技術(shù)領(lǐng)域
elr,vol,in,li,lmp,about,solvent,anode,fec,solvents
地域： CA CA Alameda

摘要

In an embodiment, a metal-ion battery cell comprises an anode electrode, a cathode electrode, a separator, and electrolyte ionically coupling the anode electrode and the cathode electrode. The anode electrode is a high-capacity electrode (e.g., in the range of about 2 mAh/cm2 to about 10 mAh/cm2) and the cathode electrode comprises an intercalation-type active material including at least Li, one or more metals, and oxygen. The electrolyte includes a solvent composition having low-melting point (LMP) solvent(s) in the range from about 10 vol. % to about 95 vol. % of the solvent composition.

說明書

The conventional salt used in most conventional Li-ion battery electrolytes is LiPF6. Examples of less common salts (e.g., explored primarily in research publications or, in some cases, never even described in Li-ion battery electrolyte applications, but may still be applicable and useful) include: lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium hexafluoroantimonate (LiSbF6), lithium hexafluorosilicate (Li2SiF6), lithium hexafluoroaluminate (Li3AlF6), lithium bis(oxalato)borate (LiB(C2O4)2, lithium difluoro(oxalate)borate (LiBF2(C2O4)), various lithium imides (such as SO2FN?(Li+)SO2F, CF3SO2N?(Li+)SO2CF3, CF3CF2SO2N?(Li+)SO2CF3, CF3CF2SO2N?(Li+)SO2CF2CF3, CF3SO2N?(Li+)SO2CF2OCF3, CF3CF2SO2N?(Li+)SO2CF2OCF3, C6F5SO2N?(Li+)SO2CF3, C6F5SO2N?(Li+)SO2C6F5 or CF3SO2N?(Li+)SO2PhCF3, and others), and others.

權(quán)利要求

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