Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (8): 1160-1167.DOI: 10.1016/S1872-2067(19)63365-6

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MoS2-rGO hybrid architecture as durable support for cathode catalyst in proton exchange membrane fuel cells

Muhammad Tuoqeer Anwara,b, Xiaohui Yana, Muhammad Rehman Asghara, Naveed Husnainc, Shuiyun Shena, Liuxuan Luoa, Xiaojing Chenga, Guanghua Weid, Junliang Zhanga   

  1. a Institute of Fuel Cells, School of Mechanical Engineering, MOE Key Laboratory of Power and Machinery Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    b COMSATS University Islamabad(Sahiwal Campus), Off G. T. Rd., Sahiwal, Punjab 57000, Pakistan;
    c Institute of Thermal Energy Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    d SJTU-ParisTech Elite Institute of Technology, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2019-03-13 Revised:2019-04-01 Online:2019-08-18 Published:2019-06-21
  • Supported by:
    This work was financially aided by the National Key R&D Program of China (2016YFB0101201) and the National Natural Science Foundation of China (21706158, 21533005).

Abstract: Carbon black is utilized as a conventional electrocatalyst support material for proton exchange membrane fuel cells. However, this support is prone to corrosion under oxidative and harsh environments, thus limiting the durability of the fuel cells. Meanwhile, carbon corrosion would also weaken the linkage between Pt and the support material, which causes Pt agglomeration, and consequently, deterioration of the cell performance. To overcome the drawbacks of a Pt/C electrocatalyst, a hybrid support material comprising molybdenum disulfide and reduced graphene oxide is proposed and synthesized in this study to exploit the graphitic nature of graphene and the availability of the exposed edges of MoS2. TEM results show the uniform dispersion of Pt nanoparticles over the MoS2-rGO surface. Electrochemical measurements indicate higher ECSA retention and better ORR activity after 10000 potential cycles for Pt/MoS2-rGO as compared to Pt/C, demonstrating the improved durability for this hybrid support material.

Key words: Fuel cell, Hybrid catalyst support, Carbon corrosion, Supported catalyst, Pt-based electrocatalyst