Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 32, Issue 3, Pages 3006-3018Publisher
SPRINGER
DOI: 10.1007/s10854-020-05052-5
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Funding
- National Natural Science Foundation of China [51672165]
- Xi'an Key Laboratory of green manufacture of ceramic materials Foundation [2019220214SYS017CG039]
- Key Program for International S&T Cooperation Projects of Shaanxi Province [2020KW-038]
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Inducing [100]-oriented plate-like α-MoO3 during high-temperature calcinations process can achieve regularly exfoliated layer structure, optimize [100] single-direction Li+ interlayer diffusion path, and enhance the stability of lithium-ion batteries.
Layer-structured alpha-MoO3 with high theoretical capacity (1117 mAh g(-1)) is considered as one of the alternative anode materials for LIBs. However, the repeated insertion/extraction of Li+ often causes irregularly exfoliated layer structure of alpha-MoO3, especially the multiple-direction interlayer Li+ insertion/extraction shows rapid capacity decay. In this work, we achieve regularly exfoliated layer structure by inducing [100]-orientated plate-like alpha-MoO3 during high-temperature calcinations process. This regularly exfoliated layer structure is dominated by the optimized [100] single-direction Li+ interlayer diffusion way caused by the induced orientation growth. As anode for LIBs, the plate-like alpha-MoO3 exhibits capacity retention of 86.7% from 1st to 300th, showing enhanced stability of Li storage performance. This work indicates that inducing orientation growth of electrode material to optimize lithium-ion diffusion path can achieve regular exfoliation of layer structure, which can enhance the stability of Li storage performance. This conclusion can be used as a good reference for enhancing stability of layer-structured electrodes by structure design.
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