Solvent-free synthesis of N-doped carbon coated ZnO nanorods composite anode via a ZnO support-induced ZIF-8 in-situ growth strategy
Solvent-free synthesis of N-doped carbon coated ZnO nanorods composite anode via a ZnO support-induced ZIF-8 in-situ growth strategy
复制标题
通过 ZnO 支撑诱导的 ZIF-8 原位生长策略无溶剂合成 N 掺杂碳涂层 ZnO 纳米棒复合阳极
DOI：
10.1016/j.electacta.2017.08.075
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发表时间：
2017-10-01
影响因子：
6.6
通讯作者：
He, Zhen
中科院分区：
文献类型：
--
作者：
Gan, Qingmeng;Zhao, Kuangmin;He, Zhen
The N-doped carbon coated ZnO nanorods (ZnO/NC-Z NRDs) are synthesized through a simple solvent-free method, in which the N-doped carbon is derived from thermal treatment of the in-situ grown zeolitic imidazolate framework-8 (ZIF-8) on the surface of ZnO NRDs. The in-situ coated N-doped carbon layer can not only enhance the electrical conductivity of ZnO NRDs and thus increasing the diffusion rate of Li ions, but also serve as a buffer layer to impede the volume expansion during the charge-discharge processes. When utilized as anodes for lithium-ion batteries (LIBs), the as-synthesized ZnO/NC-Z NRDs deliver a high capacity of 1011 mA h g(-1) at 200 mA g(-1) after 200 cycles and remain 544 mA h g(-1) at 1000 mA g(-1) after 850 cycles, holding a capacity retention of as high as 87.7%. In addition, the as-synthesized ZnO/NC-Z NRDs can also act as a precursor for the preparation of high performance N-doped carbon tube (1001.1 mA h g(-1) at 200 mA g(-1) with the retention of 99.1% after 100 cycles) with an ultrathin wall thickness. Such solvent-free synthetic method can not only simplify the synthesis process, but also pave a new strategy to synthesize Zn-based materials for the application of energy storage devices. (C) 2017 Published by Elsevier Ltd.
