In this paper, monolithic nanoporous NiFe electrocatalyst is developed by dealloying a NiFeAl alloy, fabricated by a laser-based manufacturing method, as the electrocatalyst toward oxygen evolution reaction (OER). The nanoporous NiFe alloy displays an improved electrochemical performance by exhibiting an OER current density of 100 mA/cm² at 442 mV overpotential in the 1 M KOH aqueous solution, which is better than that of laser processed bulk NiFe alloy (464 mV). The structures, crystallinities, and chemical compositions of the nanoporous NiFe electrocatalyst are characterized by SEM, XRD and EDXS. With an activity comparable to the electrocatalysts reported to date, the monolithic nanoporous NiFe electrodes are also highly flexible in mechanical configurations, due to the combined advantages of both laser and dealloying processes, which provide new options for OER electrode design.

在本文中，通过将通过激光基制造方法制造的Ni Fe Al合金脱氧用作氧释放反应（OER）的电催化剂，开发了整体式纳米多孔Ni Fe电催化剂。纳米多孔Ni Fe合金在1 M KOH水溶液中在442 mV超电势下具有100 mA / cm ²的OER电流密度，显示出改进的电化学性能，这比激光加工的块状Ni Fe合金（464 mV）更好。。通过SEM，XRD和EDXS对纳米多孔Ni Fe电催化剂的结构，结晶度和化学组成进行了表征。具有与迄今为止报道的电催化剂相当的活性，整体式纳米多孔镍由于激光和脱合金工艺的综合优势，Fe电极在机械配置方面也具有很高的灵活性，这为OER电极设计提供了新的选择。