阴极
材料科学
电化学
兴奋剂
镍
化学工程
电池(电)
电流密度
离子
纳米技术
电极
冶金
光电子学
物理化学
化学
物理
工程类
功率(物理)
有机化学
量子力学
作者
Yang‐Yi Liu,Guoqiang Yuan,Xuyu Wang,Junpeng Liu,Qingyu Zeng,Xiaotian Guo,Hai Wang,Chun‐Sen Liu,Huan Pang
标识
DOI:10.1016/j.cej.2021.132538
摘要
Zinc-ion batteries (ZIBs) have gained significant attention for their high theoretical capacity, safe operation and low cost. However, the sluggish kinetics of Zn2+ diffusion in cathode materials hampers the further development of ZIBs. In this study, the interlayer spacing of V6O13 crystals was tuned by doping with Ni2+ to obtain Ni-doped V6O13 (NixV6-xO13) nanobelts with high performance for cathodes in ZIBs. The effect of the amount of Ni precursors on the morphology and the electrochemical properties of the NixV6-xO13 nanobelts was also investigated. The NixV6-xO13 nanobelt cathodes exhibited a high discharge capacity of 302.6 mAh g−1 at 1 A g−1 as well as an excellent specific capacity of 96.5 mAh g−1 after 10,000 cycles at high current density of 8.0 A g−1. By combining various in-situ and ex-situ characterization technologies, the electrochemical mechansims of the NixV6-xO13 nanobelt cathode were revealed. This work offers fundamental guidelines for tuning the electrochemical activities of cathodes in ZIBs.
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