Ultrafine Pd ensembles anchored-Au2Cu aerogels boost ethanol electrooxidation

Qiurong Shi; Chengzhou Zhu; Mengkun Tian; Dong Su; Maosen Fu; Mark H. Engelhard; Indranil Chowdhury; Shuo Feng; Dan Du; Yuehe Lin

doi:10.1016/j.nanoen.2018.08.047

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Ultrafine Pd ensembles anchored-Au2Cu aerogels boost ethanol electrooxidation

Journal article

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Ultrafine Pd ensembles anchored-Au2Cu aerogels boost ethanol electrooxidation

Qiurong Shi, Chengzhou Zhu, Mengkun Tian, Dong Su, Maosen Fu, Mark H. Engelhard, Indranil Chowdhury, Shuo Feng, Dan Du and Yuehe Lin

Nano energy, Vol.53(C), pp.206-212

11/01/2018

DOI: https://doi.org/10.1016/j.nanoen.2018.08.047

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Abstract

Chemistry

Chemistry, Physical

Materials Science, Multidisciplinary

Nanoscience & Nanotechnology

Physics, Applied

Science & Technology

Materials Science

Physical Sciences

Physics

Technology

Modification of the noble metal-based aerogels from the atomic scale is rarely being investigated despite the rapid development of various metallic aerogels. Recent studies have verified that Pd ensembles are more effective than isolated Pd atoms toward electrooxidation of ethanol. However, the electrocatalytic efficiency is still insufficient. Here, for the first time, we successfully anchored Pd-ensembles on the surface of Au2Cu metallic hydrogels via kinetically controlled galvanic displacement reaction. The atomic configuration optimized Au2Cu@Pd metallic aerogels exhibited significantly enhanced mass activity similar to 11.6 times of commercial Pd and excellent stability with remained 90% of mass activity after 300 potential cycle test. The ligand effect and geometric effect generated by the finely tailored atomic configurations including Pd ensembles and core-shell structure are critical for enhancing electrocatalytic efficiencies. Thus, the Pd ensembles anchored-Au2Cu aerogels hold a great promise for being potentially applied in devices such as direct alcohol fuel cells, biosensors and electronics.

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Title: Ultrafine Pd ensembles anchored-Au2Cu aerogels boost ethanol electrooxidation
Creators: Qiurong Shi - Washington State University
Chengzhou Zhu - Washington State University
Mengkun Tian - University of Tennessee at Knoxville
Dong Su - Brookhaven National Laboratory
Maosen Fu - Brookhaven National Laboratory
Mark H. Engelhard - Pacific Northwest National Laboratory
Indranil Chowdhury - Washington State University
Shuo Feng - Washington State University
Dan Du - Washington State University
Yuehe Lin - Washington State University
Publication Details: Nano energy, Vol.53(C), pp.206-212
Academic Unit: School of Mechanical and Materials Engineering
Publisher: Elsevier
Number of pages: 7
Grant note: China Scholarship Council Recruitment Program of Global Youth Experts Washington State University Department of Energy's Office of Biological and Environmental Research; United States Department of Energy (DOE) DE-SC0012704 / U.S. Department of Energy, Office of Basic Energy Sciences; United States Department of Energy (DOE)
Identifiers: 99901227847401842
Language: English
Resource Type: Journal article