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|Title:||Enhanced catalytic properties from platinum nanodots covered carbon nanotubes for proton-exchange membrane fuel cells|
|Authors:||Tang, Z. |
Proton-exchange membrane fuel cell
|Source:||Tang, Z., Poh, C.K., Lee, K.K., Tian, Z., Chua, D.H.C., Lin, J. (2010-01-01). Enhanced catalytic properties from platinum nanodots covered carbon nanotubes for proton-exchange membrane fuel cells. Journal of Power Sources 195 (1) : 155-159. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jpowsour.2009.06.105|
|Abstract:||An efficient fabrication method for carbon nanotube (CNT)-based electrode with a nanosized Pt catalyst is developed for high efficiency proton-exchange membrane fuel cells (PEMFC). The integrated Pt/CNT layer is prepared by in situ growth of a CNT layer on carbon paper and subsequent direct sputter-deposition of the Pt catalyst. Both scanning electron microscopy (SEM) and transmission electron microscopy (TEM) demonstrate that this Pt/CNT layer consists of a highly porous CNT layer covered by well-dispersed Pt nanodots with a narrow size distribution. Compared with conventional gas-diffusion layer assisted electrodes, the CNT-based electrode with a Pt/CNT layer acting as a combined gas-diffusion layer and catalyst layer shows pronounced improvement in polarization tests. A high maximum power density of 595 mW cm-2 is observed for a low Pt loading of 0.04 mg cm-2 at the cathode. © 2009 Elsevier B.V. All rights reserved.|
|Source Title:||Journal of Power Sources|
|Appears in Collections:||Staff Publications|
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