High entropy alloy as a highly active and stable electrocatalyst for hydrogen evolution reaction
By Guoliang Zhang, Kaisheng Ming, Jianli Kang, Qin Huang, Zhijia Zhang, Xuerong Zheng, Xiaofang Bi. Electrochimica Acta, 2018
302 citations recorded by the source corpus.
Abstract Transition metals and their alloys are expected to have high catalytic activities for hydrogen evolution reaction due to their partially filled d orbitals fitting for the gain and loss of electrons. The poor corrosion resistance, however, limits their applications as electrocatalysts in acidic and alkaline electrolytes. In this work, we report that high entropy alloy (HEA, Ni 20 Fe 20 Mo 10 Co 35 Cr 15 ) with high corrosion resistance can be functioned as highly active and stable electrocatalyst for the hydrogen evolution reaction in both acidic and basic electrolytes. The HEA requires an overpotential of only 107 mV in acidic solutions and 172 mV in the basic solution at current density of 100 mA cm −2 , which are much better than that of the dual-phase counterpart and even comparable to that of Pt sheet and most reported nanostructured noble-metal-free catalysts, for hydrogen evolution reaction in both acidic and alkaline solutions.
Subfields: Materials Chemistry, Mechanical Engineering, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/cc7e3f41c60d66593a99c0e3124b46a682d52034
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Citations in the corpus
- High-Entropy Alloys as Catalysts for the CO2 and CO Reduction Reactions (2019, methodology): “205 Adsorption energies were calculated on planar periodic 2x2x5 slabs and 3x3x5 slabs illus206 trated in Figure S1 with a plane-wave cutoff at 400 eV and a Monhorst-Pack k-point sampling 207 of the Brillouin zone of (4,4,1) for CoCuGaNiZn and (8,8,1) for AgAuCuPdPt.”