期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 78, 页码 33319-33328出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.07.208
关键词
Hydrogen evolution reaction; Glycerol oxidation reaction; Bifunctional electrocatalysts; Alkaline electrolyte; Hierarchical porous nanosheets
资金
- National Natural Science Foundation of China [51772162, 52072197, 22002068]
- Youth Innovation and Technology Foundation of Shandong Higher Education Institutions, China [2019KJC004]
- Outstanding Youth Foundation of Shandong Province, China [ZR2019JQ14]
- Taishan Scholar Young Talent Program [tsqn201909114]
- Major Scientific and Technological Innovation Project [2019JZZY020405]
- Major Basic Research Program of Natural Science Foundation of Shandong Province [ZR2020ZD09]
- China Postdoctoral Science Foundation [2021M691700]
Hierarchical porous PdRuCu nanosheets (HP PdRuCu NSs) with large electrochemically active surface area, abundant active sites, and stable structures are synthesized through continuous access to CO bubbles. HP PdRuCu NSs exhibit excellent catalytic activity for the hydrogen evolution reaction and glycerol oxidation reaction, outperforming PdRu nanosheets (PdRu NSs), Pd nano-sheets (Pd NSs), and commercial Pd black. The introduction of Ru and Cu atoms facilitates C-C bond cleavage and the complete oxidation of glycerol to CO2, as well as the accelerated oxidation/removal of poisonous COads.
Pd-based catalysts have received wide attention due to their outstanding anti-CO poisoning property, whereas the structural instability limits their application. Thehierarchical porous PdRuCu nanosheets (HP PdRuCu NSs) with large electrochemically active surface area, abundant active sites, and stable structures are synthesized through continuous access to CO bubbles. HP PdRuCu NSs exhibit excellent hydrogen evolution reaction (HER) catalytic activity with an ultralow overpotential of 25 mV at 10 mA cm-2 and a Tafel slope of 87.5 mV dec-1 in alkaline.media. Meanwhile, the peak mass activity and specific activity of HP PdRuCu NSs for glycerol oxidation reaction (GOR) are 1083 mA mg-1Pd and 38.8 A m-2, respectively, superior to that of PdRu nanosheets (PdRu NSs), Pd nano -sheets (Pd NSs), and commercial Pd black. The introduction of Ru and Cu atoms facilitates the C-C bond cleavage and the complete oxidation of glycerol to CO2, as well as the accelerated oxidation/removal of the poisonous COads in between. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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