Abstract
In this work we examine the influence of the type of silicon source material (two milled and two plasma enhanced chemical vapor deposition) on the electrochemical performance of silicon-based anodes for Li-ion batteries. The four representative Si sources were previously identified in literature but have never been compared side by side, which is critical to understanding the wide variation in performance reported for silicon-based electrodes. These particles display unique surface features associated with surface oxides and residual precursor species (Si−N, Si−C, Si−H) which impact processability by changing interactions within the electrode slurry and the resulting electrochemical performance. These properties should be taken into consideration when utilizing “off-the-shelf” Si powders for investigations and would be good variables to explore to understand why certain chemistries display suitable performance, while others “don't work.”.
| Original language | English |
|---|---|
| Pages (from-to) | 3790-3797 |
| Number of pages | 8 |
| Journal | ChemElectroChem |
| Volume | 7 |
| Issue number | 18 |
| DOIs | |
| State | Published - Sep 15 2020 |
Funding
The authors would like to thank the reviewers for their thoughtful comments and lively discussion during the revision of this manuscript which improved the final product greatly. This research was conducted at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE-AC05-00OR22725. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-publicaccess-plan). The work was supported by the Vehicle Technologies Office, Hybrid Electric Systems Program, Battery R&D, Brian Cunningham (Technology Manager), at the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. SEM analysis was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. We thank Dr. Rose Ruther for collection of Raman spectra, Dr Brenda Smith for collection of XRD, and Dr. Jagjit Nanda for use of the ATR-FTIR. The authors would like to thank the reviewers for their thoughtful comments and lively discussion during the revision of this manuscript which improved the final product greatly. This research was conducted at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE‐AC05‐00OR22725. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid‐up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe‐publicaccess‐plan). The work was supported by the Vehicle Technologies Office, Hybrid Electric Systems Program, Battery R&D, Brian Cunningham (Technology Manager), at the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. SEM analysis was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. We thank Dr. Rose Ruther for collection of Raman spectra, Dr Brenda Smith for collection of XRD, and Dr. Jagjit Nanda for use of the ATR‐FTIR.
Keywords
- Li-ion batteries
- Silicon
- oxide
- surface interactions
- zeta potential
