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祝贺Salah Advanced Energy Materials接收!
发布时间:2022-03-30

祝贺Salah题为:“Advanced Ru/Ni/WC@NPC multi-interfacial electrocatalyst for efficient sustainable hydrogen and chlor-alkali co-production"的研究论文被Advanced Energy Materials接收!  

Rational design and construction of a new high-efficiency hydrogen evolution electrocatalyst operating stably under high temperature, strong alkaline, and high salt conditions are the key challenges for realizing economically sustainable hydrogen generation and low energy consumption chlor-alkali co-production. Herein, according to requirements of HER electrocatalysts under chlor-alkali electrolysis condition, a three-component Ru/Ni/WC electrocatalyst with a weak exothermic effect of water adsorption step (∆HH2O = -0.12 eV), low water dissociation energy barrier (ΔGb = 0.61 eV), and close-to-zero Gibbs free adsorption energy (∆GH* = -0.03 eV) is designed through DFT calculations. Under the guidance of theoretical calculations, a novel multi-interface composite electrocatalyst is successfully prepared, denoted as Ru/Ni/WC@NPC (Ru wt.% = 4.13%). In a strongly alkaline medium, Ru/Ni/WC@NPC (Ru wt.% = 4.13%) records an excellent HER electrocatalytic activity with a very low overpotential (η10 = -3 mV) at 20 ᵒC and even discloses an exciting HER behavior at 90 ᵒC (η10 = +2.8 mV). Most importantly, the electrochemical test under simulated chlor-alkali electrolysis condition demonstrates better HER performance than industrial cathode material of commercial 20% Pt/C and low carbon steel. Generally, this study reveals a new strategy and reference for constructing effective and robust HER electrocatalysts that match to chlor-alkali industry.