Activity origins and design principles of nickel-based catalysts for nucleophile electrooxidation

doi:10.1016/j.chempr.2020.07.022

淡江大學機構典藏 > 工學院 > 電機工程學系暨研究所 > 期刊論文 > Item 987654321/120710

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題名:	Activity origins and design principles of nickel-based catalysts for nucleophile electrooxidation
作者:	Chen, W.;Xie, C.;Wang, Y.;Zou, Y.;Dong, C. L.;Huang, Y. C.;Xiao, Z.;Wei, Z.;Du, S.;Chen, C.;Zhou, B.;Ma, J.;Wang, S.
關鍵詞:	electrocatalysis;nucleophile oxidation reaction;nickel hydroxide;activity origin;multiple in situ measurements;catalyst oxidation;reaction interface analysis;isotope labeling experiment;organic electrosynthesis;electrophilic lattice oxygen
日期:	2020-11-05
上傳時間:	2021-05-05 12:11:45 (UTC+8)
摘要:	Understanding how electrocatalysts function in a nucleophile oxidation reaction (NOR) on anode, replacing the oxygen evolution reaction (OER) of water splitting, is vital to the development of hydrogen generation and organic electrosynthesis. Here, we propose that for β-Ni(OH)2 and NiO, the NOR activity origins are β-Ni(OH)O containing electrophilic lattice oxygen and NiO(OH)ads containing electrophilic adsorption oxygen, respectively. For β-Ni(OH)2, NOR is a two-step, one-electron reaction, including an electrogenerated catalyst dehydrogenation reaction and a spontaneous nucleophile dehydrogenation reaction. Therefore, the NOR activity of β-Ni(OH)2 can be markedly regulated by tuning the lattice oxygen ligand environment. For β-Co0.1Ni0.9(OH)2, the onset potential of NOR with different nucleophiles is ∼1.29 V (1 M KOH), which breaks the bottleneck of ∼1.35 V for most nickel-based catalysts. Overall, we identify the activity origins and propose the design principles of nickel-based catalysts for NOR. These provide theoretical guidance for the development of NOR and organic electrosynthesis in practical industrial applications.
關聯:	Chem 6(11), p.2974-2993
DOI:	10.1016/j.chempr.2020.07.022
顯示於類別:	[電機工程學系暨研究所] 期刊論文

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