Co-Based Nanosheets with Transitional Metal Doping for Oxygen Evolution Reaction

Chunhua Xiong; Chao Cai

doi:10.3390/nano12111788

Co-Based Nanosheets with Transitional Metal Doping for Oxygen Evolution Reaction

Nanomaterials (Basel). 2022 May 24;12(11):1788. doi: 10.3390/nano12111788.

Authors

Chunhua Xiong¹, Chao Cai²

Affiliations

¹ College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618307, China.
² School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China.

Abstract

Activated two-dimension (2D) materials are used in various applications as high-performance catalysts. Breaking the long-range order of the basal plane of 2D materials can highly promote catalytic activity by supplying more active sites. Here we developed a method to synthesize ultrathin MCoO_x (M = V, Mn, Fe, Ni, Cu, Zn) amorphous nanosheets (ANSs). These Co-based ANSs show high oxygen evolution reaction (OER) activity in alkaline solution due to the broken long-range order and the presence of abundant low bonded O on the basal plane. The stable Fe₁Co₁O_x ANSs also show an overpotential of ca. 240 mV of achieving 10 mA/cm² in OER, better than most reported transition metal-based electrocatalysts.

Keywords: amorphous materials; electrocatalysts; low bonded oxygen; transition metal-based materials; two-dimension nanosheets.

Abstract

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