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RESEARCH ARTICLE
Contents Vol 71(7)

Facile Surfactant-Free Synthesis of Composition-Tunable Bimetallic PtCu Alloy Nanosponges for Direct Methanol Fuel Cell Applications

Yanna Hu A , Taiyang Liu A , Chaozhong Li A B and Qiang Yuan orcid.org/0000-0003-3022-9925 A B C
+ Author Affiliations
- Author Affiliations

A College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, China.

B Department of Chemistry, Tsinghua University, Beijing 100084, China.

C Corresponding author. Email: qyuan@gzu.edu.cn

Australian Journal of Chemistry 71(7) 504-510 https://doi.org/10.1071/CH18160
Submitted: 11 April 2018  Accepted: 31 May 2018   Published: 27 June 2018

Abstract

Sponge-like metal nanomaterials have been paid great attention due to their unique structure for wide applications in hydrogen storage, filtration, sensors, heterogeneous catalysis, and fuel cells. Here, we first use a facile, bottom-up method to successfully prepare composition-tunable PtCu alloy nanosponges constructed with sub-4.5 nm particle building blocks. Due to the porous structure, structure defects, and synergetic effect of Pt and Cu, the PtCu alloy nanosponges exhibit good electrocatalytic performances towards methanol oxidation. Compared with pure Pt nanosponges, the specific/mass activity on PtCu2 alloy nanosponges is 5.84/2.93 times that on pure Pt nanosponges. Furthermore, the stability and reactivation ability of PtCu alloy nanosponges are also superior to pure Pt nanosponges.


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