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Research Article

AgPdCo hollow nanospheres electrocatalyst with high activity and stability toward the formate electrooxidation

Qiao Wang1,2, Fuyi Chen1,2( ), Quan Tang1,2, Longfei Guo1,2, Tao Jin1,2, Bowei Pan1,2, Junpeng Wang1,2, Zhen Li1,2, Bo Kou1,2, Weiqi Bian1,2
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
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Abstract

The widespread commercial application of direct formate fuel cell (DFFC) is limited by the lack of efficient electrocatalysts for the formate oxidation reaction (FOR). AgPdCo hollow nanospheres (H-NSs) with jagged surfaces are successfully synthesized via a facile method involving the wet-chemical synthesis of AgPdCo nanospheres (NSs) and galvanic replacement reaction between Pd salt and AgPdCo NSs. Surpassing Ag30Pd69Co1 NSs and most of previously reported electrocatalysts, Ag9Pd90Co1 H-NSs exhibit extremely high FOR activity with a peak current density of 3.08 A·mgPd-1. Apart from the competitive activity, Ag9Pd90Co1 H-NSs show greatly improved chronoamperometric and cycling stability, whereby the current density retains about 0.24 A·mgPd-1 after 3,600 s electrocatalysis and the mass activity maintains 54.06% of the initial value after 500 cycles. The unique hollow nanosphere and synergistic effect are responsible for the enhanced activity and stability. This study will provide new clues for the development of outstanding electrocatalysts.

Keywords

AgPdCohollow nanospheresformate oxidation reaction (FOR)electrocatalysis

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Nano Research
Volume 14 Issue 7,
July 2021
Pages 2268-2276
DOI: 10.1007/s12274-020-3220-z
Cite this article:
Wang Q, Chen F, Tang Q, et al. AgPdCo hollow nanospheres electrocatalyst with high activity and stability toward the formate electrooxidation. Nano Research, 2021, 14(7): 2268-2276. https://doi.org/10.1007/s12274-020-3220-z
Topics:
Cobalt alloysElectrocatalysis ElectrocatalystsElectrolysis Fuel cellsNanospheres Ternary alloys

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Received: 22 August 2020
Revised: 15 October 2020
Accepted: 01 November 2020
Published: 05 July 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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