纳米碳纤维载铂作为质子交换膜燃料电池阳极催化剂

doi:10.3866/PKU.WHXB20110813

Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (08): 1875-1880.doi: 10.3866/PKU.WHXB20110813

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles Next Articles

Platinum Nanoparticles Supported on Carbon Nanofibers as Anode Electrocatalysts for Proton Exchange Membrane Fuel Cells

WANG Xi-Zhao^1,3, FU Rong^1,4, ZHENG Jun-Sheng^1,2, Ma Jian-Xin^1,2

1. Clean Energy Automotive Engineering Center, Tongji University, Shanghai, 201804, P. R. China;
2. School of Automotive Studies, Tongji University, Shanghai, 201804, P. R. China;
3. Technical Center, United Automotive Electronic Systems Co., Ltd., Shanghai, 201206, P. R. China;
4. School of Resource and Environment Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China

Received:2011-03-04 Revised:2011-05-12 Published:2011-07-19
Contact: ZHENG Jun-Sheng E-mail:jszheng@tongji.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (21006073), Shanghai Rising-Star Program, China (11QA1407200), Shanghai Leading Academic Discipline Project, China (B303) and Open-Project Program of the State Key Laboratory of Chemical Engineering, China (SKL-ChE-08C07).

Abstract

Abstract:

Pt nanoparticles supported on carbon nanofibers (Pt/CNFs) with different microstructure, i.e., platelet CNF (Pt/p-CNF), fish-bone CNF (Pt/f-CNF), and tubular CNF (Pt/t-CNF) were synthesized by a chemical reduction method. X-ray diffraction (XRD) and high resolution transmission electron microscope (HRTEM) were applied to characterize the structure of the as-prepared catalysts. The electrochemical surface area (ESA) was studied by cyclic voltammetry (CV). Membrane electrode assemblies (MEAs) with the as-prepared catalysts were fabricated and tested. We found that Pt nanoparticles showed different particle size and dispersion on the three kinds of CNF supports and the mean size of the Pt nanoparticles on p-CNF, f-CNF, and t-CNF was 2.4, 2.7, and 2.8 nm, respectively. Single cell testing indicated that the cell with Pt/p-CNF as the anode catalyst gave better performance compared to Pt/f-CNF and Pt/t-CNF. The maximum power density was 0.569 W·cm^-2 for Pt/p-CNF, which was higher than that for Pt/f-CNF (0.550 W·cm^-2) and Pt/t-CNF (0.496 W·cm^-2). Furthermore, Pt nanoparticles supported on carbon black (Pt/XC-72) were also prepared. Pt nanoparticles supported on CNFs have been shown to have a smaller particle size and better dispersion than those on XC-72, and this proves that CNFs can be an efficient electrocatalyst support for proton exchange membrane fuel cells (PEMFCs).

Key words: Catalyst, Carbon nanofiber, Pt nanoparticles, Catalytic activity, Fuel cell

WANG Xi-Zhao, FU Rong, ZHENG Jun-Sheng, Ma Jian-Xin. Platinum Nanoparticles Supported on Carbon Nanofibers as Anode Electrocatalysts for Proton Exchange Membrane Fuel Cells[J]. Acta Phys. -Chim. Sin. 2011, 27(08), 1875-1880. doi: 10.3866/PKU.WHXB20110813

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Platinum Nanoparticles Supported on Carbon Nanofibers as Anode Electrocatalysts for Proton Exchange Membrane Fuel Cells

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