ZHENG Jun-sheng, WANG Xi-zhao, FU Rong, LI Ping, YANG Dai-jun, LU, . Electrocatalytic oxygen-reduction reaction on a carbon nanofiber/carbon paper composite. New Carbon Mater., 2011, 26(4): 262-270. doi: 10.1016/S1872-5805(11)60081-4
Citation:
ZHENG Jun-sheng, WANG Xi-zhao, FU Rong, LI Ping, YANG Dai-jun, LU, . Electrocatalytic oxygen-reduction reaction on a carbon nanofiber/carbon paper composite. New Carbon Mater., 2011, 26(4): 262-270. doi: 10.1016/S1872-5805(11)60081-4
ZHENG Jun-sheng, WANG Xi-zhao, FU Rong, LI Ping, YANG Dai-jun, LU, . Electrocatalytic oxygen-reduction reaction on a carbon nanofiber/carbon paper composite. New Carbon Mater., 2011, 26(4): 262-270. doi: 10.1016/S1872-5805(11)60081-4
Citation:
ZHENG Jun-sheng, WANG Xi-zhao, FU Rong, LI Ping, YANG Dai-jun, LU, . Electrocatalytic oxygen-reduction reaction on a carbon nanofiber/carbon paper composite. New Carbon Mater., 2011, 26(4): 262-270. doi: 10.1016/S1872-5805(11)60081-4
1. Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), Shanghai 201804, China|
3.
School of Automotive Studies, Tongji University (Jiading Campus), Shanghai 201804, China|
Funds:
National Natural Science Fundation of China (21006073), Shanghai Rising-Star Program (11QA1407200), open-project program of the State Key Laboratory of Chemical Engineering (SKL-ChE-08C07), and Shanghai Leading Academic Discipline Project (B303).
ZHENG Jun-sheng(1979-), male, Ph.D., engaged in research on new carbon materials, hydrogen energy, and fuel cell technology. E-mail: jszheng@tongji.edu.cn
Corresponding author:
MA Jian-xin. Tel: +86-21-69589480, Fax: +86-21-69589355
A carbon nanofiber/carbon paper (CNF/CP) composite was synthesized directly on CP by a catalytic chemical vapor-deposition method, and the physicochemical properties of and oxygen-reduction reaction (ORR) on this composite were investigated. Scanning electron microscopy shows that the CNFs are uniformly distributed on the CP, and high-resolution transmission electron microscopy results show that the CNFs have a narrow size distribution. The CNF/CP composite has a large surface area, and its mesoporous character is confirmed by N2physisorption. Raman spectrum studies show that the CNF/CP composite has a high ratio of edge atoms to basal atoms compared with that of CP. From cyclic voltammetry studies, the CNF/CP composite was found to be more active than CP in terms of ORR, which may be due to the contribution from the CNFs. The CNF/CP composite shows a higher exchange current density and more positive equilibrium potential than CP, as verified by Tafel analysis. Moreover, linear-sweep voltammetry confirms that ORR on the CNF/CP composite is conducted through a two-electron reaction pathway.
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