Structure Rearrangement and V(IV) Doping for V2O5 as Ultralong-Life and Ultrahigh-Rate Cathode in Aqueous Zinc-Ion Batteries
Structure Rearrangement and V(IV) Doping for V2O5 as Ultralong-Life and Ultrahigh-Rate Cathode in Aqueous Zinc-Ion Batteries
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V2O5 的结构重排和 V(IV) 掺杂作为水系锌离子电池超长寿命和超高倍率正极
DOI:
10.1149/2.0931912jes
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发表时间:
2019-08
影响因子:
3.9
通讯作者:
Chen Han
中科院分区:
文献类型:
--
作者:
Chen Yueqian;Xiang Kaixiong;Zhu Yirong;Xiao Li;Chen Wenhao;Liao Haiyang;Chen Xianhong;Chen Han
To improve the electrochemical performance of commercial V 2 O 5, its structures are rearranged and simultaneously doped by coessential and low-valence V (IV) ions via the oxalic acid reductant coupled facile hydrothermal process to achieve successfully V 2 O 5 nanosheets. The materials were characterized by using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. After the structural rearrangement and V (IV)-doping, V 2 O 5 nanosheets exhibit bigger lattice parameters and smaller grain size, but more stable structure. Compared to the commercial V 2 O 5, V 2 O 5 nanosheets reveal the higher specific capacity of 230.7 mAh g− 1 at the current density of 0.2 A g− 1 and the higher rate capacity of 216.3 mAh g− 1 at the current density of 5 A g− 1, maintain the more excellent capacity retention of 87.8%(189.8 mAh g− 1) after 1000 cycles. These results indicate the structural rearrangement and V (IV) doping can greatly improve the structure and performance for commercial V 2 O 5.
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影响因子:
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DOI:
10.1051/matecconf/20178801006
发表时间:
2017
期刊:
--
影响因子:
--
作者:
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通讯作者:
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