Acid Treatments of Carbon Nanotubes and Their Application as Pt-Ru/ CNT Anode Catalysts for Proton Exchange Membrane Fuel Cell
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 11권 / 4호
ㆍ저자명 : Min-Sik Kim, Sinmuk Lim, Min Young Song, Hyunjin Cho, Yunho
ㆍ저자명 : Min-Sik Kim, Sinmuk Lim, Min Young Song, Hyunjin Cho, Yunho
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgements
References
한국어 초록
Different oxidation treatments on CNTs using diluted 4.0 M H2SO4 solution at room temperature and or at 90oC refluxconditions 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.
영어 초록
Different oxidation treatments on CNTs using diluted 4.0 M H2SO4 solution at room temperature and or at 90oC refluxconditions were investigated to elucidate the physical and chemical changes occurring on the treated CNTs, which might havesignificant effects on their performance as catalyst supports in PEM fuel cells. Raman spectroscopy, X-ray diffraction andtransmission electron microscope analyses were made for the acid treated CNTs to determine the particle size and distributionof the CNT-supported Pt-Ru nanoparticles. These CNT-supported Pt-based nanoparticles were then employed as anodecatalysts in PEMFC to investigate their catalytic activity and single-cell performance towards H2 oxidation. Based on PEMFCperformance results, refluxed Pt-Ru/CNT catalysts prepared using CNTs treated at 90oC for 0.5 h as anode have shown bettercatalytic activity and PEMFC polarization performance than those of the commercially available Pt-Ru/C catalyst from ETEKand other Pt-Ru/CNT catalysts developed using raw CNT, thus demonstrating the importance of acid treatment inimproving and optimizing the surface properties of catalyst support.참고 자료
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