Please use this identifier to cite or link to this item:
|Title:||Pt/CNT-based electrodes with high electrochemical activity and stability for proton exchange membrane fuel cells||Authors:||Tang, Z.
|Issue Date:||2010||Citation:||Tang, Z., Ng, H.Y., Lin, J., Wee, A.T.S., Chua, D.H.C. (2010). Pt/CNT-based electrodes with high electrochemical activity and stability for proton exchange membrane fuel cells. Journal of the Electrochemical Society 157 (2) : B245-B250. ScholarBank@NUS Repository. https://doi.org/10.1149/1.3266933||Abstract:||An integrated platinum/carbon nanotube (CNT)-based electrode for proton exchange membrane fuel cells has been efficiently fabricated by the in situ growth of a CNT layer onto carbon paper and by a subsequent direct sputter deposition of a Pt catalyst. Scanning electron microscopy and Raman spectroscopy demonstrated that the CNTs directly grown onto carbon paper formed a dense CNT layer with high surface roughness and porosity. Transmission electron microscopy micrographs indicated that this Pt/CNT composite catalyst consists of numerous Pt nanoparticles that are uniformly dispersed on the CNT surface without any surface oxidation treatment. X-ray photoelectron spectroscopy analysis revealed that the sputter-deposited Pt catalysts are mainly in a pure metallic state with an extremely low oxide formation. Compared with the carbon-black-based electrode with commercial Pt/VXC72R catalysts, the Pt/CNT/carbon-paper-based electrode has shown a pronounced improvement in electrochemical activity and stability, verified by polarization performance tests and in situ accelerated degradation tests. In situ cyclic voltammetry measurements further confirmed that the integrated Pt/CNT catalyst could give rise to a higher Pt utilization and a better corrosion resistance at the cathode. © 2009 The Electrochemical Society.||Source Title:||Journal of the Electrochemical Society||URI:||http://scholarbank.nus.edu.sg/handle/10635/64985||ISSN:||00134651||DOI:||10.1149/1.3266933|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 25, 2022
WEB OF SCIENCETM
checked on May 25, 2022
checked on May 26, 2022
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.