The research group of Professor Guo Xiaohui of Northwest University has made new progress in the research of "electrocatalysis controlled by Interface Engineering"

Nowadays, the energy crisis and environmental pollution have attracted great attention all over the world, and the development of green and clean energy (materials) has become a hot topic all over the world At present, commercial catalysts have high catalytic activity, but their high cost limits their large-scale application Therefore, it is very important to explore new electrocatalysts with low cost and high performance by effective synthesis strategy The work reported in literature shows that interface engineering has become one of the most effective methods to improve the activity, selectivity and stability of electrocatalysis The traditional method of epitaxial growth is used to construct heterogeneous interface, which needs to control the crystal surface and epitaxial interface of substrate accurately This process is complex and low yield, which becomes the bottleneck of industrial production Recently, a simple and controllable solid-state synthesis strategy has been developed by the research group of Professor Guo Xiaohui of the College of chemical materials of Northwest University to construct the interface engineering of w2n / WC heterostructure, which provides a feasible research idea and solution for the construction of low-cost and efficient electrochemical energy equipment The new w2n / WC heterogeneous electrocatalyst has the higher electrocatalytic performance of orr, oer and her The whole water removal device constructed on the catalyst has the same electrocatalytic performance after working for 24 hours for hydrogen and oxygen evolution In addition, the assembled Zn air battery has the higher specific energy and power density These experimental results show that the material performance is better than the commercial catalyst The research results were published in advanced materials (DOI: 10.1002 / ADMA 201905679) under the title of "interface engineering of w2n / WC heterostuctures derived from solid state synthesis: a high efficient ternary electronics for orr, oer, and her" The first author of this paper is Diao Jinxiang, 2017's doctoral student in material chemistry of Northwest University This study was supported by the University of science and technology of China, the national Busan University of Korea, the National Institute of materials of Japan and the National Synchrotron Radiation Laboratory of Hefei.