文献类型：期刊文献

英文题名：Highly Selective Co2 Electrocatalytic Reduction on Nickel Single-Atom Catalyst in a High-Temperature Shockwave Method

作者：Wang, Jiawei[1]; Xiao, Guoping[2,3]; Gao, Na[2]; Zhou, Jing[2]; Xie, Mengna[1]; Du, XianLong[2,3]; Wu, Chuanqiang[4]; Xi, Shibo[5]; Li, Tao[1]; Wang, Jian-Qiang[2,3]

机构：[1] Engineering Research Center of Large-Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; [3] University of Chinese Academy of Sciences, Beijing, 100049, China; [4] Information Materials and Intelligent Sensing Laboratory of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China; [5] Institute of Chemical and Engineering Sciences, A*STAR, Singapore, 627833, Singapore

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220412911)

语种：英文

外文关键词：Atoms - Carbon black - Carbon dioxide - Catalyst selectivity - Electrocatalysis - Electrolytic reduction - High resolution transmission electron microscopy - Nickel - Nitrogen - Particle size - Scanning electron microscopy - X ray absorption

摘要：Recently, the easily prepared catalysis used in CO 2 electrochemical reduction with high selectivity and low cost has attracted more and more attention. Compared with the temperate wet chemical preparation method, which takes a long time and introduces some impurities, we found nickel metal catalysts can be easily and quickly synthesized on carbon black using the high-temperature shockwave method, which has the advantages of rapid heating up to 1300-1500 K within 0.5 s, no introduction of excess elements and extreme low unfavorable nitrogen dopants. Heating cycles and proportion of nitrogen source have been investigated on the catalyst morphology, particle size and electrocatalysis performance. Based on operando X-ray absorption and aberration-corrected scanning transmission electron microscopy (STEM) measurements, nickel single atom catalysts (Ni SACs) were prepared successfully and uniformly in modest heating cycles and proportion of nitrogen source. The Ni SACs exhibited remarkable performance in reducing carbon dioxide (CO 2 ) to carbon monoxide (CO), with the current density of 27.5 mA/cm 2 (?1.0 V vs. reversible hydrogen electrode) and CO selectivity approaching 100% in flow cell. ? 2022, The Authors. All rights reserved.