PtRu Particles Supported on Two-dimensional Titanium Carbide/Carbon Nanotubes: Preparation and Electrocatalytic Properties

LI Ya-Hui1 ZHANG Jian-Feng1 CAO Hui-Yang1 ZHANG Xin1 JIANG Wan1,2

(1.College of Mechanics and Materials, Hohai University, Nanjing, China 211100)
(2.College of Materials Science and Engineering, Donghua University, Shanghai, China 210050)

【Abstract】Direct methanol fuel cells have good application prospects due to their advantages of convenient operation, high conversion efficiency, low operating temperature, low pollution, and easy storage and transportation of liquid fuel. However, the existing anode catalysts have shortcomings such as low catalytic activity and poor resistance to CO toxicity which restrict their commercial applications. In this study, a series of PtRu/(Ti3C2Tx)0.5-(MWCNTs)0.5 anode catalyst materials with different ratios of Pt to Ru were prepared by three-step method. Ti3C2Tx was obtained by HF corrosion of Ti3AlC2. After the compounding of Ti3C2Tx and acidified multi-walled carbon nanotubes (MWCNTs), Pt and Ru particles were supported by a solvothermal method. The synergistic relationship of Ru and Pt atoms was analyzed by XRD, SEM, EDS, TEM, and XPS. The results showed that the Ru atoms were mixed with the Pt atoms to form PtRu bimetallic alloy with a particle size of about 3.6 nm. The electrochemical results showed that the Pt1Ru0.5/(Ti3C2Tx)0.5-(MWCNTs)0.5 catalyst had the best electrochemical performance. Its electrochemical active area (ECSA) was 139.5 m2/g, and the forward peak current density was 36.4 mA/cm2.

【Keywords】 two-dimensional Ti3C2Tx material; PtRu nanoparticle; direct methanol fuel cells; electrocatalytic performance;

【DOI】

【Funds】 National Key R&D Program of China (2018YFC1508704) Jiangsu Provincial Natural Science Foundation (BK20161506) National Natural Science Foundation of China (51432004)

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This Article

ISSN:1000-324X

CN: 31-1363/TQ

Vol 35, No. 01, Pages 79-85

January 2020

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Article Outline

Abstract

  • 1 Experimental method
  • 2 Results and discussion
  • 3 Conclusion
  • References