High Active Material Loading in All‐Solid‐State Battery Electrode via Particle Size Optimization
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- Tan Shi
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
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- Qingsong Tu
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
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- Yaosen Tian
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
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- Yihan Xiao
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
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- Lincoln J. Miara
- Advanced Materials Lab Samsung Research America 3 Van de Graaff Drive Burlington MA 01803 USA
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- Olga Kononova
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
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- Gerbrand Ceder
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
書誌事項
- 公開日
- 2019-12-03
- 権利情報
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- http://creativecommons.org/licenses/by/4.0/
- http://creativecommons.org/licenses/by/4.0/
- DOI
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- 10.1002/aenm.201902881
- 公開者
- Wiley
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>Low active material loading in the composite electrode of all‐solid‐state batteries (SSBs) is one of the main reasons for the low energy density in current SSBs. In this work, it is demonstrated with both modeling and experiments that in the regime of high cathode loading, the utilization of cathode material in the solid‐state composite is highly dependent on the particle size ratio of the cathode to the solid‐state conductor. The modeling, confirmed by experimental data, shows that higher cathode loading and therefore an increased energy density can be achieved by increasing the ratio of the cathode to conductor particle size. These results are consistent with ionic percolation being the limiting factor in cold‐pressed solid‐state cathode materials and provide specific guidelines on how to improve the energy density of composite cathodes for solid‐state batteries. By reducing solid electrolyte particle size and increasing the cathode active material particle size, over 50 vol% cathode active material loading with high cathode utilization is able to be experimentally achieved, demonstrating that a commercially‐relevant, energy‐dense cathode composite is achievable through simple mixing and pressing method.</jats:p>
収録刊行物
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- Advanced Energy Materials
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Advanced Energy Materials 10 (1), 1902881-, 2019-12-03
Wiley