Two step Hydrothermally Synthesized Nest like TiO2/Co3O4 Nanostructures with Good Electrochemical Performance for Lithium Ion Battery
ZHANG Guanqun1, XU Zhou1,2, LIU Jianxiong1, YANG Yanrong1,LIU Cheng1, CHENG Qi1, YU Xiaohua3
1 Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093; 2 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640; 3 National Engineering Research Center of Waste Resource Recovery, Kunming University of Science and Technology, Kunming 650093
Abstract: In this work, a TiO2/Co3O4 nanostructured materials was prepared through a hydrothermal process using cobalt(Ⅱ) nitrate hexahydrate, urea, and hydrothermally pre-synthesized (from TiO2 powders and NaOH and under mechanical stirring) TiO2 nanowires as raw materials. The composition, morphology and electrochemical performance of the product were characterized by employing X-ray diffractometer (XRD), scanning electron microscope (SEM), charging/discharging tester and electrochemical workstation. Our experiments illustrated the nest-like micromorphology, good cyclic stability and electrochemical character of this two-step hydrothermally synthesized TiO2/Co3O4 composites, as the electrode exhibited initial discharge and charge capacities of 777 mAh/g and 759 mAh/g, respectively, and a capacity retention of 663 mAh/g after 100 cycles during constant-current charge/discharge at 33.5 mA/g.
张冠群,许州,刘建雄,杨艳蓉,刘成,程琪,于晓华. 二次水热法制备鸟巢状TiO2/Co3O4纳米结构及其锂电性能*[J]. 材料导报编辑部, 2017, 31(22): 5-9.
ZHANG Guanqun, XU Zhou, LIU Jianxiong, YANG Yanrong,LIU Cheng, CHENG Qi, YU Xiaohua. Two step Hydrothermally Synthesized Nest like TiO2/Co3O4 Nanostructures with Good Electrochemical Performance for Lithium Ion Battery. Materials Reports, 2017, 31(22): 5-9.
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2017, Vol. 31 
