May 4, 2020
Journal Article

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

Qiurong Shi
Chengzhou Zhu
Yijing Li
Haibing Xia
Mark Engelhard
Shaofang Fu
Dan Du

Abstract

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. This strategy of fabrication of metallic hydrogels and aerogels as well as their exceptional properties hold great promise in a variety of applications.

Revised: May 4, 2020 | Published: October 11, 2016

Citation

Shi Q., C. Zhu, Y. Li, H. Xia, M.H. Engelhard, S. Fu, and D. Du, et al. 2016. "A Facile Method for Synthesizing Dendritic Core-Shell Structured Ternary Metallic Aerogels and Their Enhanced Electrochemical Performances." Chemistry of Materials 28, no. 21:7928-7934. PNNL-SA-118307. doi:10.1021/acs.chemmater.6b03549