Confining CoTe2-ZnTe heterostructures on petal-like nitrogen-doped carbon for fast and robust sodium storage

Ying Jiang, Feng Wu, Zhengqing Ye, Yaozong Zhou, Yan Chen, Yixin Zhang, Zekai lv, Li Li, Man Xie*, Renjie Chen

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

25 引用 (Scopus)

摘要

Two-phase or multiphase engineering is contributed to realizing rapid electron/ion transfer kinetics for transition metal tellurides in sodium-ion batteries (SIBs). However, the large volume variation and fundamental storage mechanism of these materials remain unsolved. Herein, petal-like N-doped carbon-confined CoTe2-ZnTe heterostructures (CoZn-Te/NC) are fabricated as anodes in SIBs via a facile bimetal-organic framework-derived strategy. Benefiting from the abundant phase interfaces and dual-defective sites, CoZn-Te/NC composites have fast electrons/ions diffusion and superior pseudocapacitive property. Particularly, introducing a petal-like nitrogen-doped carbon inhibits the particle agglomeration and alleviates volume expansion, thus improving structural stability during cycling. The CoZn-Te/NC exhibits a superior rate capacity of 106 mAh/g at 10 A g−1 and a high reversible capacity of 150 mAh/g at 1.0 A g−1 over 600 long-term cycles. The unique conversion and alloying/de-alloying reaction mechanisms of CoZn-Te/NC are revealed by the in-situ and ex-situ techniques. This work gives promising insights for designing high-performance electrode materials by phase interface, doping, and confining strategy.

源语言英语
文章编号138430
期刊Chemical Engineering Journal
451
DOI
出版状态已出版 - 1 1月 2023

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Jiang, Y., Wu, F., Ye, Z., Zhou, Y., Chen, Y., Zhang, Y., lv, Z., Li, L., Xie, M., & Chen, R. (2023). Confining CoTe2-ZnTe heterostructures on petal-like nitrogen-doped carbon for fast and robust sodium storage. Chemical Engineering Journal, 451, 文章 138430. https://doi.org/10.1016/j.cej.2022.138430