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《能源化学(英文版)》 2019-08
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ZnO@MOF@PANI core-shell nanoarrays on carbon cloth for high-performance supercapacitor electrodes

Chunmei Zhu;Ying He;Yijun Liu;Natalia Kazantseva;Petr Saha;Qilin Cheng;Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology;Centre of Polymer Systems, Tomas Bata University in Zlin;  
Hierarchical ZnO@metal-organic framework @polyaniline(ZnO@MOF@PANI) core-shell nanorod arrays on carbon cloth has been fabricated by combining electrodeposition and hydrothermal method. Well-ordered Zn O nanorods not only act as a scaffold for growth of MOF/PANI shell but also as Zn source for the formation of MOF. The morphology of ZnO@MOF@PANI composite is greatly influenced by the number of PANI electrodeposition cycles. Their structural and electrochemical properties were characterized with different techniques. The results indicate that the Zn O@MOF@PANI with 13 CV cycles of PANI deposition demonstrates the maximum specific capacitance of 340.7 F g~(-1) at 1.0 A g~(-1), good rate capability with84.3% capacitance retention from 1.0 to 10 A g~(-1) and excellent cycling life of 82.5% capacitance retention after 5000 cycles at high current density of 2.0 A g~(-1). This optimized core-shell nanoarchitecture endows the composite electrode with short ion diffusion pathway, rapid ion/electron transfer and high utilization of active materials, which thus result in excellent electrochemical performance of the ternary composite.
【Fund】: supported by the National Key R&D Program of China(2016YFE0131200);; the National Natural Science Foundation of China(51702098);; International Cooperation Project of Shanghai Municipal Science and Technology Committee(15520721100 18520744400);; Research Program supported by the Ministry of Education Youth and Sports of the Czech Republic(LTACH17015)
【CateGory Index】: TB33;TM53
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