Spherically Smooth Cathode Particles by Mechanofusion Processing
| Autor: | Lituo Zheng, Mark N. Obrovac, M. D. L. Garayt, Judy MacInnis, Congxiao Wei |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Materials science Renewable Energy Sustainability and the Environment 020209 energy 02 engineering and technology engineering.material Condensed Matter Physics Cathode Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid law.invention Atomic layer deposition Coating law 0202 electrical engineering electronic engineering information engineering Materials Chemistry Electrochemistry engineering Surface modification Particle Deposition (phase transition) Composite material |
| Zdroj: | Journal of The Electrochemical Society. 166:A2924-A2927 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/2.0681913jes |
| Popis: | Surface modification has been shown to be useful for improving the cycling performance of cathode materials. Typically hetero-compositional coatings are applied on cathode particle surfaces using methods, such as aqueous deposition and atomic layer deposition (ALD), that can be expensive and inefficient. In this report, a dry mechanofusion method was used to treat cathode particles with no auxiliary coating applied. This resulted in a drastic reduction in surface area and the elimination of surface features on the particles. Furthermore, the processing results in an iso-compositional amorphous shell on the surface of each particle. The resulting particles have improved cycling. We believe the mechanofusion process is an important step toward the goal of improving the cycling performance of cathode materials. |
| Databáze: | OpenAIRE |
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