Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction

Yingnan Qin; Hao Huang; Wenhao Yu; Haonan Zhang; Zhenjiang Li; Zuochao Wang; Jianping Lai; Lei Wang; Shouhua Feng

doi:10.1002/advs.202103722

Advanced Science (Feb 2022)

Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction

Yingnan Qin,
Hao Huang,
Wenhao Yu,
Haonan Zhang,
Zhenjiang Li,
Zuochao Wang,
Jianping Lai,
Lei Wang,
Shouhua Feng

Affiliations

Yingnan Qin: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Hao Huang: School of Sustainable Energy Materials and Science Jinhua Advanced Research Institute Jinhua 321000 P. R. China
Wenhao Yu: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Haonan Zhang: Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Zhenjiang Li: College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao 266042 China
Zuochao Wang: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Jianping Lai: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Lei Wang: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
Shouhua Feng: Key Laboratory of Eco‐chemical Engineering Key Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life Science Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Laboratory of Inorganic Synthesis and Applied Chemistry College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China

DOI: https://doi.org/10.1002/advs.202103722
Journal volume & issue: Vol. 9, no. 5
pp. n/a – n/a

Abstract

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Abstract Direct ethanol fuel cells are among the most efficient and environmentally friendly energy‐conversion devices and have been widely focused. The ethanol oxidation reaction (EOR) is a multielectron process with slow kinetics. The large amount of by‐product generated by incomplete oxidation greatly reduces the efficiency of energy conversion through the EOR. In this study, a novel type of trimetallene called porous PdWM (M = Nb, Mo and Ta) is synthesized by a facile method. The mass activity (15.6 A mgPd−1) and C1 selectivity (55.5%) of Pd50W27Nb23/C trimetallene, obtained after optimizing the compositions and proportions of porous PdWM, outperform those of commercial Pt/C (1.3 A mgPt−1, 5.9%), Pd/C (5.0 A mgPd−1, 7.2%), and Pd97W3/C bimetallene (9.5 A mgPd−1, 14.1%). The mechanism by which Pd50W27Nb23/C enhances the EOR performance is evaluated by in situ Fourier transform infrared spectroscopy and density functional theory calculations. It is found that W and Nb enhance the adsorption of CH3CH2OH and oxophilic high‐valence Nb accelerates the subsequent oxidation of CO and CHx species. Moreover, Nb promotes the cleavage of CC bonds and increases the C1 selectivity. Pd60W28Mo12/C and Pd64W27Ta9/C trimetallene synthesized by the same method also exhibit excellent EOR performance.

Published in Advanced Science

ISSN: 2198-3844 (Online)
Publisher: Wiley
Country of publisher: Germany
LCC subjects: Science
Website: https://onlinelibrary.wiley.com/journal/21983844

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