Stabilization of active ultrathin amorphous ruthenium oxide via constructing electronically interacted heterostructure for acidic water oxidation  

作　　者：Xiangxiang Pan Huidong Qian Jiansheng Xu Haifeng Wang Han-Don Um Chao Lin Xiaopeng Li Wei Luo 

机构地区：[1]State Key Laboratory of Advanced Fiber Materials,College of Materials Science and Engineering,Donghua University,Shanghai,201620,China [2]Department of Chemistry,College of Sciences,Shanghai University,Shanghai,200444,China [3]Department of Chemical Engineering,Kangwon National University Chuncheon,Gangwon,24341,Republic of Korea

出　　处：《Green Energy & Environment》2025年第3期551-559,共9页绿色能源与环境(英文版)

基　　金：supported by the Fundamental Research Funds for the Central Universities (2232024Y-01);the National Natural Science Foundation of China (52225204, 52272289, 52173233 and 52402231);the Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-03-E00109);the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Natural Science Foundation of Shanghai (23ZR1479200);“Shuguang Program” supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (20SG33);the DHU Distinguished Young Professor Program (LZA2022001)。

摘　　要：Amorphous RuO_(x)(a-RuO_(x)) with disordered atomic arrangement and abundant coordinatively unsaturated Ru sites possesses high intrinsic electrocatalytic activity for oxygen evolution reaction (OER).However,the a-RuO_(x)is prone to fast corrosion during OER in strong acid.Here we realized the stabilization of an ultrathin a-RuO_(x)layer via constructing heterointerface with crystalline a-MnO_(2)nanorods array (MnO_(2)@aRuO_(x)).Benefiting from the strong electronic interfacial interaction,the as-formed MnO_(2)@a-RuO_(x)electrocatalyst display an ultralow overpotential of 128 mV to reach 10 mA cm^(-2)and stable operation for over 100 h in 0.1 mol L^(-1)HClO_(4).The assembled proton exchange membrane(PEM) water electrolyzer reach 1 A cm^(-2)at applied cell voltage of 1.71 V.Extensive characterizations indicate the MnO_(2)substrate work as an electron donor pool to prevent the overoxidation of Ru sites and the OER proceeds in adsorbent evolution mechanism process without involving lattice oxygen.Our work provides a promising route to construct robust amorphous phase electrocatalysts.

关 键 词：Amorphous ruthenium oxide Manganese dioxide Oxygen evolution reaction PEM electrolyzer 

分 类 号：TG1[金属学及工艺—金属学]