文献类型：期刊文献

英文题名：Ruthenium and Iron Co-doped Molybdenum Carbide as a Stable Hydrogen Evolution Electrocatalyst in Harsh Electrolyte

作者：Fu, Xiao Peng[1];Sun, Kai Zhi[1];Li, Xiaoxia[2];Xu, Hao Guan[1];Mao, Fang Xin[1];Yang, Hua Gui[1];Liu, Peng Fei[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]China Gen Nucl New Energy Holdings Co Ltd, Beijing 100071, Peoples R China

年份：2023

卷号：29

期号：71

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20234414994046);WOS:【SCI-EXPANDED(收录号:WOS:001090100000001)】；

基金：This work was financially supported by the Science and Technology Commission of Shanghai Municipality (21DZ1207101, 22ZR1416400), the Key Program of National Natural Science Foundation of China (22239001), the Innovation Program of Shanghai Municipal Education Commission (E00014), the Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), and the Fundamental Research Funds for the Central Universities. Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center. The authors thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry.

语种：英文

外文关键词：anion-exchange membrane electrolyzer; co-doping; hydrogen evolution reaction; molybdenum carbide

摘要：Electrocatalytic water splitting is one of the most commercially valuable pathways of hydrogen production especially combined with renewable electricity; however, efficient and durable electrocatalysts are urgently needed to reduce electric energy consumption. Here, we reported a Ru and Fe co-doped Mo2C on nitrogen doped carbon via a controllable two-step method, which can be used for efficient and enduring hydrogen evolution reaction. At 10, 100 and 200 mA cm-2 in acidic electrolyte, the resultant Ru-Fe/Mo2C@NC delivered low overpotentials of 31, 78 and 103 mV, respectively, which are comparable to that of the commercial Pt/C (20 wt %). At an applied current density of 100 mA cm-2, stable hydrogen production was conducted for 120 h without obvious degradation. In alkaline media, Ru-Fe/Mo2C@NC can also deliver a current density of 100 mA cm-2 for more than 100 h. Furthermore, the Ru-Fe/Mo2C@NC electrocatalyst was used as cathode in an anion exchange membrane water electrolyzer under industrial environments for robust hydrogen production. The characterization and electrochemical results prove the synergism effects between Ru, Fe dopants and Mo2C for promoting hydrogen evolution activity. This work would pave a new avenue to fabricate low-cost, high-performance hydrogen evolution electrocatalysts for industrial water electrolyzers. Ru and Fe co-doped Mo2C electrocatalyst (Ru-Fe/Mo2C@NC) was synthesized via a controllable two-step method for efficient and persistent hydrogen evolution reaction in harsh electrolyte. The synergistic effect between Ru, Fe dopants and Mo2C resulted in a remarkably enhanced hydrogen evolution performance of the electrocatalyst in both acidic and alkaline electrolyte.+image