期刊
ACS NANO
卷 15, 期 10, 页码 15567-15593出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c05898
关键词
microscale Si-based anode; lithium-ion battery; practical metrics; Si microparticles; SiOx microparticles; 3D porous structures; intelligent assembly; Si nanoparticle embedded structure; full cell
类别
资金
- Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [18SG035]
- Development Research Center of Shanghai Municipal People's Government [2021-GR-16]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [KF2015]
- Shanghai Engineering Research Center of Advanced Thermal Functional Materials (Shanghai Polytechnic University)
This review discusses the challenges in bridging the gap between industrial application and scientific research in Si-based batteries. Microscale design of Si-based electrodes with densified microstructure is seen as a key solution. Additionally, practical metrics and improvement strategies beyond active material are explored.
To accelerate the commercial implementation of high-energy batteries, recent research thrusts have turned to the practicality of Si-based electrodes. Although numerous nanostructured Si-based materials with exceptional performance have been reported in the past 20 years, the practical development of high-energy Si-based batteries has been beset by the bias between industrial application with gravimetrical energy shortages and scientific research with volumetric limits. In this context, the microscale design of Si-based anodes with densified microstructure has been deemed as an impactful solution to tackle these critical issues. However, their large-scale application is plagued by inadequate cycling stability. In this review, we present the challenges in Si-based materials design and draw a realistic picture regarding practical electrode engineering. Critical appraisals of recent advances in microscale design of stable Si-based materials are presented, including interfacial tailoring of Si microscale electrode, surface modification of SiOx microscale electrode, and structural engineering of hierarchical microscale electrode. Thereafter, other practical metrics beyond active material are also explored, such as robust binder design, electrolyte exploration, prelithiation technology, and thick-electrode engineering. Finally, we provide a roadmap starting with material design and ending with the remaining challenges and integrated improvement strategies toward Si-based full cells.
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