期刊
ENERGY STORAGE MATERIALS
卷 45, 期 -, 页码 48-73出版社
ELSEVIER
DOI: 10.1016/j.ensm.2021.11.033
关键词
Structure design; Alkali metal anodes; Three-dimensional hosts; Alkali-metal batteries
资金
- National Natural Science Foundation of China [51874362]
- Natural Science Foundation of Hunan Province for Distinguished Young Scholars [2018JJ1036]
This review summarizes the challenges faced by high-energy battery systems using alkali metal (Li/Na/K) anodes, and categorizes and outlines the strategies of architecture design from the perspective of electrochemical reactions. The similarities and differences of different alkali metals in terms of mechanical and chemical properties are also discussed.
Alkali (Li/Na/K) metal anodes (AMAs), because of their remarkably high energy density and low redox potential, are considered as the most promising anodes for next-generation high-energy battery systems. Nevertheless, high reactivity and uncontrollable volume change of metal anodes during plating/striping inevitably generate dendritic metal and unstable solid electrolyte interphase, inducing low Coulombic efficiency, inferior cycling stability and even safety issues. Architecture design is emerged as an effective approach to address these fatal issues and plenty of attempts have been conducted so far. Instead of simply summarizing the structure-designing strategies to modify AMAs, the review is dedicated to overviewing and categorizing the strategies of architecture design towards the challenges of AMAs by their fundamental design principles from the perspective of electrochemical reaction. Besides, the similarities and differences of three types of alkali metals, in terms of mechanical and chemical properties, have been systematically discussed. Finally, we overviewed the existing challenges, perspectives on further development direction, and outlook for practical applications for AMAs.
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