尿素辅助电解水是一种节能的制氢策略,但其应用受到阳极尿素氧化反应(UOR)和阴极析氢反应(HER)动力学缓慢的限制。以水热法合成的CoFe-LDHs/VMT(VMT为蛭石简写)催化剂作为UOR的高活性催化剂,通过XRD和XPS对催化剂进行表征。结果表明,VMT与CoFe-LDHs存在相互作用;CoFe-LDHs/VMT催化剂作为HER-UOR体系中的双功能电催化剂为实现节能制氢提供了新的途径。

Urea-assisted electrolysis water represents an energy-efficient strategy for hydrogen production.However,its potential application is hampered by the sluggish kinetics of the urea oxidation reaction (UOR) at the anode and the hydrogen evolution reaction (HER) at the cathode.In this study,CoFe-LDHs/VMT,a highly active catalyst,is synthesized via a hydrothermal method,and employed for enhancing the UOR.The characterization of the catalyst by XRD and XPS reveals the interaction between VMT and CoFe-LDHs.Experimental results demonstrate that the CoFe-LDHs/VMT catalyst exhibits excellent electrocatalytic performance in the bifunctional system of HER and UOR,providing a new pathway for energy-efficient hydrogen production.

孙源(1996-),男,硕士生,研究方向为高性能催化剂设计及其功能化研究,sunyuan256888@126.com;唐风琴(1977-),女,硕士,讲师,研究方向为二维水滑石制备及其在电催化领域的应用,通讯联系人,739780029@qq.com。