Citation: Hui Wu, Tao Peng, Zongkui Kou, Jian Zhang, Kun Cheng, Daping He, Mu Pan, Shichun Mu. Core-shell graphene@amorphous carbon composites supported platinum catalysts for oxygen reduction reaction[J]. Chinese Journal of Catalysis, ;2015, 36(4): 490-495. doi: 10.1016/S1872-2067(14)60211-4 shu

Core-shell graphene@amorphous carbon composites supported platinum catalysts for oxygen reduction reaction

1.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China

Corresponding author: Shichun Mu,
Received Date: 12 July 2014
Available Online: 22 August 2014
Fund Project: 国家自然科学基金(51372186) (51372186) 国家重点基础研究发展计划(973计划, 2012CB215504) (973计划, 2012CB215504) 湖北省自然基金重点项目(2013CFA082) (2013CFA082)

A core-shell graphene nanosheets (GNS) and amorphous carbon composite (GNS@a-C) was prepared by a chlorination method and used as a highly efficient catalyst support for oxygen reduction reaction. Herein, GNS as a shell, with excellent conductivity, high surface area, and corrosion resistance, served as a protecting coating to alleviate the degradation of amorphous carbon core. Platinum nanoparticles were homogeneously deposited on the carbon support (Pt/GNS@a-C) and showed a good catalytic activity and a higher electrochemical stability when compared with a commercial Pt/C catalyst. The mass activity of Pt/GNS@a-C catalyst was 0.121 A/mg, which was almost twice as high as that of Pt/C (0.064 A/mg). Moreover, Pt/GNS@a-C retained 51% of its initial electrochemical specific area after 4000 operating cycles when compared with Pt/C (33%). Thus, the prepared catalyst featured excellent electrochemical stability, showing promise for application in polymer electrolyte membrane fuel cells.
- Low-temperature fuel cell,
- Support,
- Core-shell structure,
- Oxygen reduction reaction
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