文献类型：期刊文献

英文题名：Amorphous Oxysulfide Reconstructed from Spinel NiCo2S4 for Efficient Water Oxidation

作者：Sun, Ying Ying[1];Zhang, Xin Yu[1];Tang, Jianfang[2];Li, Xiaoxia[2];Fu, Huai Qin[3];Xu, Hao Guan[1];Mao, Fangxin[1];Liu, PengFei[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, 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;[3]Griffith Univ, Ctr Catalysis & Clean Energy, Gold Coast Campus, Gold Coast, Qld 4222, Australia

年份：2023

卷号：19

期号：27

外文期刊名：SMALL

收录：;EI(收录号：20231313796957);WOS:【SCI-EXPANDED(收录号:WOS:000956220400001)】；

基金：This work was financially supported by the Key Program of National Natural Science Foundation of China (22239001), the International (Regional) Cooperation and Exchange Projects of the National Natural Science Foundation of China (51920105003), the Innovation Program of Shanghai Municipal Education Commission (E00014), the Science and Technology Commission of Shanghai Municipality (21DZ1207101, 22ZR1416400), the Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), and the China Postdoctoral Science Foundation Funded Project (2022M721137). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center. The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry. The authors also thank the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF) and the 1W1B beamline of Beijing Synchrotron Radiation Facility (BSRF) for their constructive assistance with the XAFS measurements and data analyses.

语种：英文

外文关键词：amorphous oxysulfide; anionic regulation mechanism; oxygen evolution reaction; spinel

摘要：The progress of effective and durable electrocatalysts for oxygen evolution reaction (OER) is urgent, which is essential to promote the overall efficiency of green hydrogen production. To improve the performance of spinel cobalt-based oxides, which serve as promising water oxidation electrocatalysts in alkaline electrolytes, most researches have been concentrated on cations modification. Here, an anionic regulation mechanism is employed to adopt sulfur(S) anion substitution to supplant NiCo2O4 by NiCo2S4, which contributed to an impressive OER performance in alkali. It is revealed that the substitution of S constructs a sub-stable spinel structure that facilitates its reconstruction into active amorphous oxysulfide under OER conditions. More importantly, as the active phase in the actual reaction process, the hetero-anionic amorphous oxysulfide has an appropriately tuned electronic structure and efficient OER electrocatalytic activity. This work demonstrates a promising approach for achieving anion conditioning-based tunable structure reconstruction for robust and easy preparation spinel oxide OER electrocatalysts.