Han, Man Ho Kim, Dongjin Kim, Sangkuk Yu, Seung-Ho Won, Da Hye Min, Byoung Koun Chae, Keun Hwa Lee, Woong Hee Oh, Hyung-Suk 2024-01-19T11:30:16Z 2024-01-19T11:30:16Z 2022-08-04 2022-09 1614-6832 https://pubs.kist.re.kr/handle/201004/114729 N-coordinated Ni single atom (Ni-NC) is one of the best catalysts for the CO2 reduction reaction (CO2RR) to produce CO. However, no bulk Ni materials have exhibited high catalytic activity for CO2RR. Herein, it is shown that NiS nanoparticles mimicking the electronic structure of Ni-NC in real-time enhance the CO2RR activity in a zero-gap electrolyzer. In situ/Operando X-ray absorption spectroscopy suggests that under a cathodic potential, the electronic structure of NiS changes similarly to that of Ni-NC and modulated Ox-zSy ligands with similar properties to Ni ligands, resulting in a mimicked electronic structure. However, NiS exhibits low stability owing to the loss of S species, key to mimicking N ligands. The future challenges in finding a stable mimicked electronic structure are discussed. Moreover, this work provides new insights into the development of catalysts from materials that have not generally been considered previously. English Wiley-VCH Verlag Real-Time Mimicking the Electronic Structure of N-Coordinated Ni Single Atoms: NiS-Enabled Electrochemical Reduction of CO2 to CO Article 10.1002/aenm.202201843 1 Advanced Energy Materials, v.12, no.35, pp.1 - 9 Advanced Energy Materials 12 35 1 9 Y scie scopus 000831192800001 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article EFFICIENT CO2 FACILE SYNTHESIS CARBON-DIOXIDE METAL CATALYSTS ELECTROREDUCTION SITES CONVERSION carbon dioxide carbon monoxide electrochemical reduction nickel single atoms nickel sulfide