Sieving pore design enables stable and fast alloying chemistry of silicon negative electrodes in Li-ion batteries
Tianjin University of Technology · Zhejiang Energy Research Institute · +7 more institutions
Abstract
Ideal silicon negative electrodes for high-energy lithium-ion batteries are expected to feature high capacity, minimal expansion, long lifespan, and fast charging. Yet, engineered silicon materials face a fundamental paradox associated with particle deformation and charge transfer, which hinders the industrial use of advanced silicon electrode materials. Here we show a sieving-pore design for carbon supports that overcomes these mechano-kinetic limitations to enable stable, fast (de)alloying chemistries of silicon negative electrodes. Such a sieving-pore structure features an inner nanopore body with reserved voids to accommodate high-mass-content silicon deformation and an outer sub-nanopore entrance to…
Citation impact
- FWCI
- 30.43
- Percentile
- 100%
- References
- 73
Authors
15- JHJiaxing HeCorresponding
Tianjin University of Technology, Zhejiang Energy Research Institute
- YDYouzhi Deng
University of Science and Technology of China, Zhejiang Energy Research Institute, Wuhan Engineering Science & Technology Institute
- JHJunwei Han
Zhejiang Energy Research Institute, State Key Laboratory of Chemical Engineering, China University of Petroleum, East China
- TXTianze Xu
Tianjin University of Technology, Zhejiang Energy Research Institute
- JQJiangshan Qi
Tianjin University of Technology
Topics & keywords
- Silicon
- Ion
- Electrode
- Materials science
- Nanotechnology
- Chemical engineering
- Chemistry
- Optoelectronics