Preparation of ZnNb2O6/N-doped carbon composites for lithium ion storage
Preparation of ZnNb2O6/N-doped carbon composites for lithium ion storage
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锂离子存储用ZnNb2O6/N掺杂碳复合材料的制备
DOI:
10.1016/j.cej.2019.03.020
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发表时间:
2019-07
影响因子:
15.1
通讯作者:
Xiang Bin
中科院分区:
文献类型:
--
作者:
Li Xuefeng;Li Jing;Ali Rai Nauman;Wang Zhi;Hu Guojing;Xiang Bin
Recently, conductive M-Nb-O composites have gained much attention as a novel lithium ion storage anode material. However, the conductivity and rate performance of M-Nb-O composites still need to be further enhanced. Herein, we have designed a facile strategy to prepare ZnNb2O6/N-doped carbon (ZnNb2O6/NC) which is derived from Nb2O5@zeolitic imidazole frameworks precursor. The ZnNb2O6/NC exhibits advanced energy storage properties including high initial capacity (673 mA h g−1at 100 mA g−1), superior reversible specific capacity (412.6 mA h g−1until 100 cycles at 100 mA g−1), long-term cyclic stability and excellent rate capability (470.5 mA h g−1after 800 cycles at a relatively high current density of 2 A g−1).
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