Far-from-equilibrium electrosynthesis ramifies high-entropy alloy for alkaline hydrogen evolution
作者机构：Key Lab for Anisotropy and Texture of Materials(MoE)School of Material Science and EngineeringNortheastern UniversityShenyang 110819China Institute of Functional Nano&Soft Materials(FUNSOM)Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123China Institute of Materials Intelligent TechnologyLiaoning Academy of MaterialsShenyang 110004China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第166卷第35期
页 面：234-240页
核心收录：
学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学]
基 金：This work is supported by the China BaoWu Low Carbon Metallurgical Innovation Foundation-BWLCF202113 The authors acknowledge the National Science Foundation of China(Nos.51971059,21903058,22173066,and 22103054) the Fundamen-tal Research Funds for the Central Universities(No.N2202012).T.C.thanks the support from Suzhou Key Laboratory of Functional Nano&Soft Materials,the Collaborative Innovation Center of Suzhou Nano Science&Technology,the Priority Academic Program Devel-opment of Jiangsu Higher Education Institutions(PAPD) the 111 Project
主 题：High-entropy alloys Nanostructures Electrocatalysis Hydrogen evolution reaction Far-from-equilibrium synthesis
摘 要：High-entropy alloys(HEAs)provide an ideal platform for developing highly active electrocatalysts and investigating the synergy of mixed ***-from-equilibrium synthesis holds great potential for fabricating HEAs at the nanoscale by rapidly shifting the thermodynamic conditions and manipulat-ing the growth *** far-from-equilibrium synthesis of nanomaterials has been successful un-der thermochemical conditions,it is markedly challenging under electrochemical environments,as the use of an electrolyte limits the accessible temperature window and the temporal tunability of ***,we demonstrate that applying a large electrochemical overpotential would create a far-from-equilibrium condition as changing the temperature of the system by considering the equation △G=△H−T△S+nF△ψ.An electrochemical far-from-equilibrium approach is thus setup for construct-ing hierarchical and self-supporting high-entropy alloy *** large overpotential drives the simultaneous reduction of multiple cations and the subsequent formation of a single-phase *** a proof-of-concept,hierarchical Fe_(0.22)Co_(0.18)Ni_(0.18)Cr_(0.14)Cu_(0.28)was fabricated and used as an electrocatalyst for the hydrogen evolution reaction in alkaline *** noble-metal-free HEA exhibits an overpoten-tial of 84 mV at a current density of 10 mA cm^(-2),which is among the lowest even compared to noble metal-based *** work opens a new avenue for building a variety of HEAs for energy and catalysis applications.
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