Drexel University, Philadelphia
Yury Gogotsi is a Distinguished University Professor and Charles T. and Ruth M. Bach Endowed Chair in the Department of Materials Science and Engineering at Drexel University (Philadelphia, USA). He also serves as Director of the A.J. Drexel Nanomaterials Institute. He received his MS (1984) and PhD (1986) from Kyiv Polytechnic and a DSc degree from the National Academy of Sciences of Ukraine in 1995. Together with his students and colleagues, he made principal contributions to the development of materials for electrochemical capacitors and other energy storage devices, discovered MXenes and polygonal nanotubes (graphite polyhedral crystals), demonstrated the tuning of structure and porosity of carbide-derived carbons, and developed new processes for the synthesis, surface modification, and purification of nanotubes and nanodiamonds. Having the h-index over 200, he has been recognized as a Highly Cited Researcher in Materials Science and Chemistry, and a Citations Laureate in Physics by Clarivate Analytics.
Electrochemical energy conversion reactions that produce sustainable chemicals and fuels, such as hydrogen through water splitting, ammonia through dinitrogen reduction, and hydrocarbons and syngas through CO2 reduction using renewable electricity, are considered vital to decarbonization. While noble metals supported on carbon have been studied for a long time, alternative materials with no or a very low noble metal content are highly desirable. Following the discovery of 2D Ti3C2 in 2011 [1], 2D carbides, oxycarbides, carbonitrides, and nitrides of transition metals known as MXenes [2] have greatly expanded the nanomaterials family. MXenes offer higher conductivity than any carbons, thus offering low resistive losses. They contain transition metals with high catalytic and electrocatalytic activity in the surface layer and provide a large surface area due to their 2D morphology [3]. More than 50 different carbide and nitride MXenes have been reported, and the structure and properties of numerous other MXenes have been predicted. Moreover, the availability of solid solutions on M and X sites, multi-element high-entropy MXenes, control of surface terminations, and the discovery of out-of-plane ordered double-M o-MXenes (e.g., Mo2TiC2), as well as in-plane ordered i-MXenes (e.g., Mo4/3C) offer a potential for producing dozens of new distinct structures and an infinite number of solid solutions. Due to their conductivity and redox-active surfaces, MXenes are explored in all kinds of batteries and supercapacitors [2]. Many MXenes also provide unique and beneficial catalytic and electrocatalytic properties [3].
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