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Research Article

1-Naphthol induced Pt3Ag nanocorals as bifunctional cathode and anode catalysts of direct formic acid fuel cells

Xian Jiang1,2,§, Yang Liu2,§, Jiaxin Wang2, Yufei Wang2, Yuexin Xiong2, Qun Liu2, Naixu Li1, Jiancheng Zhou1(), Gengtao Fu2,3(), Dongmei Sun2, Yawen Tang2()
School of Chemistry and Chemical Engineering,Southeast University,Nanjing,211189,China;
Jiangsu Key Laboratory of New Power Batteries,Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University,Nanjing,210023,China;
School of Chemical and Biomedical Engineering,Nanyang Technological University,Singapore,637459,Singapore;

§ Xian Jiang and Yang Liu contributed equally to this work.

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Abstract

Developing highly efficient bifunctional cathode and anode electrocatalysts is very important for the large-scale application of direct formic acid fuel cells. However, the high-cost and poor CO-tolerance ability of the most commonly used Pt greatly block this process. To increase the utilization efficiency and extend bifunctional properties of precious Pt, herein, coral-like Pt3Ag nanocrystals are developed as an excellent bifunctional electrocatalyst through a facile one-pot solvothermal method. The formation mechanism of Pt3Ag nanocorals has been elaborated well via a series of control experiments. It is proved that 1-naphthol serving as a guiding surfactant plays a key role in the formation of high-quality nanocorals. Thanks to the unique coral-like structure and alloy effects, the developed Pt3Ag nanocorals present significantly enhanced electrocatalytic properties (including activity, stability and CO-tolerance ability) towards both the cathodic oxygen reduction and anodic formic acid oxidation, as compared with those of commercial Pt black and Pt-based nanoparticles. The present synthetic method can also be extended to fabricate other bimetallic electrocatalysts with unique morphology and structure.

Keywords

Pt3Ag alloynanocoralsbifunctional electrocatalystoxygen reduction reactionformic acid oxidation

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Nano Research
Volume 12 Issue 2,
February 2019
Pages 323-329
DOI: 10.1007/s12274-018-2218-2
Cite this article:
Jiang X, Liu Y, Wang J, et al. 1-Naphthol induced Pt3Ag nanocorals as bifunctional cathode and anode catalysts of direct formic acid fuel cells. Nano Research, 2019, 12(2): 323-329. https://doi.org/10.1007/s12274-018-2218-2
Topics:
AnodesBinary alloysCathodesElectrocatalystsElectrolysis Electrolytic reduction Formic acid fuel cells (FAFC)PlatinumSilver alloys
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