Bifunctional Square-Planar NiO₄ Coordination of Topotactic LaNiO_2.0 Films for Efficient Oxygen Evolution Reaction

Xiao, Zhifei1; Huang, Haoliang2; Hu, Sixia3; Weng, Zhuanglin1; Huang, Yuping1; Du, Bing1; Zeng, Xierong1; Meng, Yuying4; Huang, Chuanwei1

2023-11-01

10.1002/smtd.202300793

SMALL METHODS   影响因子和分区

2366-9608

The high-efficient and low-cost oxygen evolution reaction (OER) is decisive for applications of oxide catalysts in metal-air batteries, electrolytic cells, and energy-storage technologies. Delicate regulations of active surface and catalytic reaction pathway of oxide materials principally determine thermodynamic energy barrier and kinetic rate during catalytic reactions, and thus have crucial impacts on OER performance. Herein, a synergistic modulation of catalytically active surface and reaction pathway through facile topotactic transformations switching from perovskite (PV) LaNiO3.0 film to infinite-layer (IL) LaNiO2.0 film is demonstrated, which absolutely contributes to improving OER performance. The square-planar NiO4 coordination of IL-LaNiO2.0 brings about more electrochemically active metal (Ni+) sites on the film surface. Meanwhile, the oxygen-deficient driven PV- IL topotactic transformations lead to a reaction pathway converted from absorbate evolution mechanism to lattice-oxygen-mediated mechanism (LOM). The non-concerted proton-electron transfer of LOM pathway, evidenced by the pH-dependent OER kinetics, further boosts the OER activity of IL-LaNiO2.0 films. These findings will advance the in-depth understanding of catalytic mechanisms and open new possibilities for developing highly active perovskite-derived oxide catalysts.

epitaxial oxide films oxide catalysts oxygen evolution reaction topotactic transformation

SCI ; EI

英语

其他

Natural Science Foundation of Guangdong Province["2022A1515010211","207078903043"] ; null[20220809153419002]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001109741200001

WILEY-V C H VERLAG GMBH

20234815120280

Catalysis ; Catalysts ; Coordination reactions ; Lanthanum compounds ; Nickel compounds ; Oxide films ; Oxygen ; Surface reactions

Minerals:482.2 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

Web of Science

1.Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol China, Sustech Core Res Facil, Shenzhen 518055, Guangdong, Peoples R China
4.Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Peoples R China

Xiao, Zhifei,Huang, Haoliang,Hu, Sixia,et al. Bifunctional Square-Planar NiO₄ Coordination of Topotactic LaNiO_2.0 Films for Efficient Oxygen Evolution Reaction[J]. SMALL METHODS,2023.

Xiao, Zhifei.,Huang, Haoliang.,Hu, Sixia.,Weng, Zhuanglin.,Huang, Yuping.,...&Huang, Chuanwei.(2023).Bifunctional Square-Planar NiO₄ Coordination of Topotactic LaNiO_2.0 Films for Efficient Oxygen Evolution Reaction.SMALL METHODS.

Xiao, Zhifei,et al."Bifunctional Square-Planar NiO₄ Coordination of Topotactic LaNiO_2.0 Films for Efficient Oxygen Evolution Reaction".SMALL METHODS (2023).