Abstract
Highlights Lithiating the anode overhang of Si is more difficult than in graphite electrodes. Overhang utilization is more prohibitive in crystalline than in amorphous Si. The voltage hysteresis creates a thermodynamic barrier for overhang lithiation. The overhang of Si anodes still contributes to SEI growth. Life forecasting may be affected by the overhang behavior in Si anodes.
| Original language | English |
|---|---|
| Article number | 070519 |
| Journal | Journal of the Electrochemical Society |
| Volume | 171 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1 2024 |
Funding
The authors are grateful to Kevin Knehr and Ankit Verma for valuable discussions. This research was supported by the U.S. Department of Energy\u2019s Vehicle Technologies Office under the Silicon Consortium Project, directed by Brian Cunningham, Thomas Do, Nicolas Eidson and Carine Steinway, and managed by Anthony Burrell. This work was supported in part by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists (WDTS) under the Science Undergraduate Laboratory Internships Program (SULI). A portion of this work (silicon milling\u2014GMV) was performed at ORNL operated by UT-Battelle, LLC, under contract DEAC05\u201300OR22725 with the U.S. Department of Energy (DOE). The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (\u201CArgonne\u201D). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02\u201306CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. The authors are grateful to Kevin Knehr and Ankit Verma for valuable discussions. This research was supported by the U.S. Department of Energy\u2019s Vehicle Technologies Office under the Silicon Consortium Project, directed by Brian Cunningham, Thomas Do, Nicolas Eidson and Carine Steinway, and managed by Anthony Burrell. This work was supported in part by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists (WDTS) under the Science Undergraduate Laboratory Internships Program (SULI). A portion of this work (silicon milling\u2014GMV) was performed at ORNL operated by UT-Battelle, LLC, under contract DEAC05-00OR22725 with the U.S. Department of Energy (DOE). The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (\u201CArgonne\u201D). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.