Research Paper

Effect of Nitric Acid on Modified Mesoporous Carbon as Catalyst Support of Direct Methanol Fuel Cell

[+] Author and Article Information
Qiao-xia Li

Associate Professor
e-mail: liqiaoxia@shiep.edu.cn

Hong-min Mao

e-mail: hongminmao@163.com

Jin-guang Li

e-mail: jinguang826@126.com

Qun-jie Xu

College of Environmental and
Chemical Engineering,
Shanghai University of Electric Power,
Shanghai 200090, China

Contributed by the Advanced Energy Systems Division of ASME for publication in the Journal of Fuel Cell Science and Technology. Manuscript received March 31, 2013; final manuscript received April 22, 2013; published online August 20, 2013. Editor: Nigel M. Sammes.

J. Fuel Cell Sci. Technol 10(5), 051006 (Aug 20, 2013) (3 pages) Paper No: FC-13-1032; doi: 10.1115/1.4024835 History: Received March 31, 2013; Revised April 22, 2013

Nitric acid modified Mesoporous carbon (CMK-3) supported Pt particles have been prepared by chemical reduction with NaBH4 as a reducing agent. Energy dispersive spectrometer shows that the catalysts have some oxygenic functional groups. The activity of the composite catalysts for methanol electro-oxidation was investigated by using cyclic votammogram and chronoamperometry in acid media. The results indicated that modified mesoporous carbon can improve the catalytic ability of Pt catalyst for methanol electro-oxidation and antipoison capability for CO. The composite electrode modified by 0.23 g nitric acid has the highest electrochemical ability.

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Grahic Jump Location
Fig. 4

CO striping voltammetric curves of Pt/CMK-3 and Pt/CMK-3-0.23 in 0.1 mol/L HClO4

Grahic Jump Location
Fig. 3

Chronoamperometry curves of Pt/CMK-3-m at 0.4 V in 0.1 mol/LHClO4 +0.5 mol/L CH3OH

Grahic Jump Location
Fig. 2

Voltammetric curves of Pt/CMK-3-m in 0.1 mol/L HClO4 +0.5 mol/L CH3OH. The scan rate of potential was 50 mV/s.

Grahic Jump Location
Fig. 1

EDS spectra of Pt/CMK-3-0.23




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