Electrochemistry‐Accelerated Water–Gas Shift Reaction on IrN <sub>4</sub> –RhN <sub>4</sub> Dual Sites Catalysts for Efficient Hydrogen Production
Abstract
Abstract The water–gas shift reaction (WGSR) is crucial to the hydrogen economy, which is hampered by the harsh conditions and complicated purification process. In this work, the spatially separated efficient CO conversion and high‐purity H 2 production are realized by electrochemistry‐accelerated water–gas shift reaction (WGSR) with IrN 4 –RhN 4 dual sites single atom catalysts (IrRh–NC) in high‐temperature polymer–electrolyte–membrane electrolyzer. In this reaction, the Ir single atoms in the catalysts can rapidly dissociate H 2 O at an extremely low potential to supply abundant *OH, which ensures the *OH groups bind to the spontaneously adsorbed *CO on neighboring Rh sites to further accelerate CO conversion. What's more, the elevated temperatures (120–300 °C) maintain water in the gaseous state during the reaction, thus greatly facilitating mass transfer of the reactants CO and H 2 O within the reactor. Employing IrRh–NC as the anodic catalyst, the electrolyzer achieves superior CO catalytic performance (424 mA cm −2 at 0.4 V) and high purity (99.9%) H 2 production (3.2 ml min −1 ), surpassing the performance of particle catalysts. This work illuminates the tantalizing possibility for sustainable hydrogen economic development.
Article Details
Authors (17)
Qie Liu
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Liyuan Gong
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Jingjing Wang
Luyao Ma
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering
Yandong Wu
Yu‐Cheng Huang
National Synchrotron Radiation Research Center Hsinchu 300092 Taiwan
Ta Thi Thuy Nga
Research Center for X-ray Science & Department of Physics
Yabin Xu
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Zuyao Jiang
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Shiqian Du
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Hongjing Zhong
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Yanjing Wang
Miaoyu Li
Chung‐Li Dong
Department of Physics Tamkang University New Taipei City Taiwan
Guobin Wen
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering
Li Tao
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University
Shuangyin Wang
State Key Laboratory of Chem/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering