A Facile Method for Synthesizing Dendritic Core–Shell Structured Ternary Metallic Aerogels and Their Enhanced Electrochemical Performances

Shi, Qiurong; Zhu, Chengzhou; Li, Yijing; Xia, Haibing; Engelhard, Mark H.; Fu, Shaofang; Du, Dan; Lin, Yuehe

doi:10.1021/acs.chemmater.6b03549

Title: A Facile Method for Synthesizing Dendritic Core–Shell Structured Ternary Metallic Aerogels and Their Enhanced Electrochemical Performances

Journal Article · Tue Oct 11 00:00:00 EDT 2016 · Chemistry of Materials

DOI:https://doi.org/10.1021/acs.chemmater.6b03549· OSTI ID:1340854

Shi, Qiurong ^[1]; Zhu, Chengzhou ^[1]; Li, Yijing ^[2]; Xia, Haibing ^[2]; Engelhard, Mark H. ^[3]; Fu, Shaofang ^[1]; Du, Dan ^[1]; Lin, Yuehe ^[1]

Washington State Univ., Pullman, WA (United States)
Shandong Univ., Jinan (China)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Currently, three dimensional self-supported metallic structures are attractive for their unique properties of high porosity, low density, excellent conductivity etc. that promote their wide application in fuel cells. Here, for the first time, we report a facile synthesis of dendritic core-shell structured Au/Pt₃Pd ternary metallic aerogels via a one-pot self-assembly gelation strategy. The as-prepared Au/Pt₃Pd ternary metallic aerogels demonstrated superior electrochemical performances toward oxygen reduction reaction compared to commercial Pt/C. The unique dendritic core-shell structures, Pt₃Pd alloyed shells and the cross-linked network structures are beneficial for the electrochemical oxygen reduction reaction performances of the Pt-based materials via the electronic effect, geometric effect and synergistic effect. Lastly, this strategy of fabrication of metallic hydrogels and aerogels as well as their exceptional properties hold great promise in a variety of applications.

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Research Organization:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Grant/Contract Number:: AC05-76RL01830

OSTI ID:: 1340854

Report Number(s):: PNNL-SA-118307; 48877; 48920; KP1704020

Journal Information:: Chemistry of Materials, Vol. 28, Issue 21; ISSN 0897-4756

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 53 works

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Title: A Facile Method for Synthesizing Dendritic Core–Shell Structured Ternary Metallic Aerogels and Their Enhanced Electrochemical Performances

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