Invention Grant
- Patent Title: Electrolytes for improved performance of cells with high-capacity anodes based on micron-scale moderate volume-changing particles
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Application No.: US15873850Application Date: 2018-01-17
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Publication No.: US11177500B2Publication Date: 2021-11-16
- Inventor: Gleb Yushin , Ashleigh Ward , Gregory Roberts
- Applicant: Sila Nanotechnologies Inc.
- Applicant Address: US CA Alameda
- Assignee: Sila Nanotechnologies Inc.
- Current Assignee: Sila Nanotechnologies Inc.
- Current Assignee Address: US CA Alameda
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Agent Daniel Podhajny
- Main IPC: H01M10/052
- IPC: H01M10/052 ; H01M10/0561 ; H01M4/38 ; H01M10/0569 ; H01M10/42 ; H01M10/0568 ; H01M4/02 ; H01M10/0567

Abstract:
A metal-ion battery cell is provided that comprises anode and cathode electrodes, a separator, and an electrolyte. The anode electrode may, for example, have a capacity loading in the range of about 2 mAh/cm2 to about 10 mAh/cm2 and comprise anode particles that (i) have an average particle size in the range of about 0.2 microns to about 40 microns, (ii) exhibit a volume expansion in the range of about 8 vol. % to about 180 vol. % during one or more charge-discharge cycles of the battery cell, and (iii) exhibit a specific capacity in the range of about 600 mAh/g to about 2,600 mAh/g. The electrolyte may comprise, for example, (i) one or more metal-ion salts and (ii) a solvent composition that comprises one or more low-melting point solvents that each have a melting point below about −70° C. and a boiling point above about +70° C.
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