Fabrication of superior catalytic performance palladium-based catalysts with affordable cost is the key to develop direct ethanol fuel cell.Herein,Pd-decorated three-dimensional(3D)porous constructed from graphene oxide(GO)and MXene combining with polystyrene(PS)particles as sacrificial templates(Pd/GO-MXene-PS)to elevate the catalytic performance for ethanol oxidation was proposed.The 3D porous interconnected structure of Pd/GO-MXene-PS was characterized by scanning electron microscope(SEM),transmission electron microscope(TEM)and Brunner-Emmet-Teller(BET).By optimiz-ing the doping ratio of MXene to GO,the mass activity of Pd/GO5-MXene5-PS(2944.0 mA·mg-1)was 3.0 times higher than that of commercial Pd/C(950.4 mA·mg-1)toward ethanol oxidation in base solution.Meanwhile,the rotating disk electrode(RDE)results demonstrated that Pd/GO5-MXene5-PS had a faster kinetics of ethanol oxidation.The enhanced ethanol oxidation over Pd/GO5-MXene5-PS could attribute to the excellent 3D interconnected porous structure,large surface area,good conductivity and homogeneous Pd distribution.This work provided a new idea for creating 3D porous MXene composite materials in electrocatalysis.

Yi-Zhe Chen;Ming Zhou;Yu-Fu Huang;Yan-Yun Ma;Luo-Yi Yan;Xin-Wen Zhou;Xin-Zhou Ma;Xue-Ling Zhao;Cheng Chen;Juan Bai;Dong-Hai Lin

Shanghai Engineering Research Center of Advanced Thermal Functional Materials,Shanghai Key Laboratory of Engineering Materials Application and Evaluation,School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China;Institute of Functional Nano&Soft Materials(FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices,Soochow University,Suzhou 215123,China;College of Biological and Pharmaceutical Sciences,China Three Gorges University,Yichang 443002,China;School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,China;School of Chemistry and Physics,Queensland University of Technology,Brisbane,QLD 4000,Australia

稀有金属（英文版）

[1]Yi-Zhe Chen;Ming Zhou;Yu-Fu Huang;Yan-Yun Ma;Luo-Yi Yan;Xin-Wen Zhou;Xin-Zhou Ma;Xue-Ling Zhao;Cheng Chen;Juan Bai;Dong-Hai Lin-.Enhanced ethanol oxidation over Pd nanoparticles supported porous graphene-doped MXene using polystyrene particles as sacrificial templates)[J].稀有金属（英文版）,2022(09):3170-3179

GO5,MXene5

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