Recently, Professor Li Zhenjiang from the Sino-German Science and Technology College of Qingdao University of Science and Technology, Taishan Scholars team made breakthroughs in the research of supercapacitor electrode materials. The results were jointly completed by the newly introduced young teachers Zhao Jian and Professor Li Zhenjiang from Sino-German Science and Technology College. Published in the internationally renowned academic journal Advanced Energy Materials ("A High-Energy Density Asymmetric Supercapacitor Based on Fe2O3Nanoneedle Arrays and NiCo2O4/Ni(OH)2Hybrid Nanosheet Arrays Grown on SiC Nanowire Networks as Free-Standing Advanced Electrodes" 2018, 8: 1702787, IF = 16.721).
As a new type of energy storage device, supercapacitor has attracted extensive attention from researchers at home and abroad due to its characteristics of fast charge and discharge, high coulombic efficiency and long cycle life. However, constructing an electrode material with good electrochemical properties is the key to achieving its efficient energy storage. Therefore, how to design high-performance skeleton materials and active materials, and achieve the synergy between the two materials, has become a bottleneck problem in this field.
After many years of hard work, Professor Li Zhenjiang's team has mastered the core technology of SiC nanowires with independent intellectual property rights, and firstly used the SiC nanowire network prepared by mass production as the skeleton and the transition metal compound as the transition metal compound. The active material, NiCo2O4/Ni(OH)2 mixed nanosheet array cathode material and Fe2O3 nanoneedle array anode material were grown on SiC nanowires by controlling the process parameters. The prepared composite electrode material not only has high specific capacitance but also high specific capacitance. It has excellent rate characteristics; in addition, by using the prepared composite positive electrode and negative electrode materials, and by reasonably matching the quality and capacitance of the positive and negative electrode materials, an asymmetric type with high energy density and good cycle stability is assembled. Super capacitor. This achievement has laid a solid foundation for the industrialization of a new generation of high-performance supercapacitors.
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