Invention Application
- Patent Title: SILICON-CONTAINING ELECTROCHEMICAL CELLS AND METHODS OF MAKING THE SAME
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Application No.: US17039366Application Date: 2020-09-30
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Publication No.: US20220102725A1Publication Date: 2022-03-31
- Inventor: Xingcheng XIAO , Mark W. VERBRUGGE , Xingyi YANG , Lei WANG , Raghunathan K.
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: H01M4/58
- IPC: H01M4/58 ; H01M10/0525 ; H01M4/136 ; H01M4/505 ; H01M4/525 ; H01M4/1397 ; H01M4/1393 ; H01M4/133 ; H01M4/62

Abstract:
An electrochemical cell is provided herein as well as methods for preparing electrochemical cells. The electrochemical cell includes a negative electrode and a positive electrode. The negative electrode includes a prelithiated electroactive material including a lithium silicide. Lithium is present in the prelithiated electroactive material in an amount corresponding to greater than or equal to about 10% of a state of charge of the negative electrode. The electrochemical cell has a negative electrode capacity to positive electrode capacity for lithium (N/P) ratio of greater than or equal to about 1, and the electrochemical cell is capable of operating at an operating voltage of less than or equal to about 5 volts.
Public/Granted literature
- US11626591B2 Silicon-containing electrochemical cells and methods of making the same Public/Granted day:2023-04-11
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