Heterointerface engineering of Ru/RuS_(2) on N/S-doped hollow mesoporous carbon for promoting alkaline hydrogen evolution  

作　　者：Ning Wang Dong-Dong Ma Sheng-Hua Zhou Meng-Ke Hu Xiaofang Li Xin-Tao Wu Qi-Long Zhu 

机构地区：[1]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences(CAS),Fuzhou 350002,China [2]Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of Chin1,Fuzhou 350108,China [3]College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China [4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Chemical Letters》2023年第7期373-378,共6页中国化学快报（英文版）

基　　金：financially supported by the National Key R&D Program of China (No. 2021YFA1500402);the National Natural Science Foundation of China (NSFC, Nos. 21901246, 22105203 and 22175174);the Natural Science Foundation of Fujian Province (Nos. 2020J01116 and 2021J06033)。

摘　　要：Alkaline hydrogen evolution reaction (HER) suffers from a sluggish kinetic,which requires the elaborate catalytic interface and micro-nanoscale architecture engineering of the electrocatalysts to accelerate the water dissociation and hydrogen evolution.Herein,the heterointerface engineering was proposed for promoting the alkaline HER by constructing the highly exposed Ru/RuS_(2) heterostructures homogeneously distributed on hollow N/S-doped carbon microspheres (Ru/RuS_(2)@h-NSC).Benefited from the synergistic effect of heterointerfacial Ru/RuS_(2),the high accessibility of the active sites on both inner and outer surface of mesoporous shells and the efficient mass transport,Ru/RuS_(2)@h-NSC affords a remarkable catalytic performance with an overpotential of 26 mV@10 mA/cm^(2) for alkaline HER,outperforming most of the state-of-the-art catalysts.Further applying Ru/RuS_(2)@h-NSC and its oxidized derivate for the overall alkaline water splitting,the required cell voltage is much lower than that of the commercial Pt/C||RuO_(2)pair to achieve the same current density.Our study may allow us to guide the design of micro-nanoreactors with optimal catalytic interfaces for promising electrocatalytic applications.

关 键 词：Hydrogen evolution reaction Heterostructures N/S-doped carbon Hollow mesoporous microspheres Ru nanoparticles 

分 类 号：TQ116.2[化学工程—无机化工] TQ426