Yu, Shuo EnShuo EnYuWang, Ying ChyiYing ChyiWangTseng, Chia YunChia YunTsengCheng, I-ChunI-ChunChengJIAN-ZHANG CHEN2024-04-092024-04-092024-04-0100318949https://scholars.lib.ntu.edu.tw/handle/123456789/641822NiRu bimetallic metal-organic frameworks (NiRu-MOFs) are grown by a simple hydrothermal method on nickel foam (NF) as an the electrocatalyst for the hydrogen evolution reaction. Low-pressure plasmas of pure Ar, 95%Ar + 5%H2, and 95% Ar + 5%O2 are used for the post-treatment of the NiRu-MOFs. NiRu-MOFs-AO with post-plasma treatment with 95%Ar + 5%O2 show the lowest overpotential of 123.3 mV at a current density of 10 mA cm−2 and a Tafel slope of 72.0 mV dec−1 in 1 M KOH electrolyte. Electrochemical impedance spectroscopy results indicate that post-plasma treatment can further reduce the charge transfer resistance. Moreover, the electric double-layer capacitance (Cdl) is calculated based on the cyclic voltammetry results, and the electrocatalyst subjected to 95%Ar + 5%O2 post-plasma treatment shows a 2Cdl value of 3.69 mF/cm2, suggesting a larger electrochemically active surface area after oxygen-containing-plasma treatment.electrocatalyst | electrolysis | hydrogen evolution reaction (HER) | NiRu-metal organic frameworks (NiRu-MOFs) | plasma[SDGs]SDG6[SDGs]SDG7journal article10.1088/1402-4896/ad314a2-s2.0-85188326351https://api.elsevier.com/content/abstract/scopus_id/85188326351