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Acid Treatments of Carbon Nanotubes and Their Application as Pt-Ru/ CNT Anode Catalysts for Proton Exchange Membrane Fuel CellAcid Treatments of Carbon Nanotubes and Their Application as Pt-Ru/ CNT Anode Catalysts for Proton Exchange Membrane Fuel Cell

Other Titles
Acid Treatments of Carbon Nanotubes and Their Application as Pt-Ru/ CNT Anode Catalysts for Proton Exchange Membrane Fuel Cell
Authors
김민식Sinmuk Lim송민영조현진최윤호유종성
Issue Date
2010
Publisher
한국탄소학회
Keywords
CNT; Surface treatment; Electrocatalyst; Anode; Proton exchange membrane fuel cell
Citation
Carbon Letters, v.11, no.4, pp.336 - 342
Indexed
KCI
OTHER
Journal Title
Carbon Letters
Volume
11
Number
4
Start Page
336
End Page
342
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/117704
ISSN
1976-4251
Abstract
Different oxidation treatments on CNTs using diluted 4.0 M H2SO4 solution at room temperature and or at 90oC reflux conditions were investigated to elucidate the physical and chemical changes occurring on the treated CNTs, which might have significant effects on their performance as catalyst supports in PEM fuel cells. Raman spectroscopy, X-ray diffraction and transmission electron microscope analyses were made for the acid treated CNTs to determine the particle size and distribution of the CNT-supported Pt-Ru nanoparticles. These CNT-supported Pt-based nanoparticles were then employed as anode catalysts in PEMFC to investigate their catalytic activity and single-cell performance towards H2 oxidation. Based on PEMFC performance results, refluxed Pt-Ru/CNT catalysts prepared using CNTs treated at 90oC for 0.5 h as anode have shown better catalytic activity and PEMFC polarization performance than those of the commercially available Pt-Ru/C catalyst from ETEK and other Pt-Ru/CNT catalysts developed using raw CNT, thus demonstrating the importance of acid treatment in improving and optimizing the surface properties of catalyst support.
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