Facile in Situ Transformation of NiOOH into MOF-74(Ni)/NiO OH Heterogeneous Composite for Enchancing Electrocatalytic Methanol Oxidation

Wei-Qun Zhou; Ben-Jun Xi; Xi-Wen Chang; Bin Wang; Xue-Qian Wu; Shuang Li; Ya-Pan Wu; Dong-Sheng Li

doi:10.3390/molecules27072113

Facile in Situ Transformation of NiOOH into MOF-74(Ni)/NiO OH Heterogeneous Composite for Enchancing Electrocatalytic Methanol Oxidation

Molecules. 2022 Mar 25;27(7):2113. doi: 10.3390/molecules27072113.

Authors

Wei-Qun Zhou^{1

2}, Ben-Jun Xi², Xi-Wen Chang^{1

2}, Bin Wang², Xue-Qian Wu^{1

2}, Shuang Li^{1

2}, Ya-Pan Wu^{1

2}, Dong-Sheng Li^{1

2}

Affiliations

¹ Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, College of Materials and Chemical Engineering, China Three Gorges University, Yichang 443002, China.
² Hubei Three Gorges Laboratory, Yichang 443007, China.

Abstract

A new MOF-74(Ni)/NiOOH heterogeneous composite was synthesized via NiOOH microsphere precursor. The electrocatalytic methanol oxidation reactions' (MOR) performance was assessed. The as-prepared MOF-74(Ni)/NiOOH exhibited excellent activity with high peak current density (27.62 mA·cm^-2) and high mass activity (243.8 mA·mg^-1). The enhanced activity could be a result of the synergistic effect of the MOF-74(Ni)/NiOOH heterocomposite providing more exposed active sites, a beneficial diffusion path between the catalyst surface and electrolyte, and improved conductivity, favorable for improving MOR performance.

Keywords: MOF-74(Ni)/NiOOH composite; electrocatalysis; in situ; methanol oxidation reaction; nickel oxide hydroxide.

Abstract

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