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Title: Cobalt coated electrodes for high efficiency PEM fuel cells by plasma sputtering deposition
Authors: Tang, Z. 
Poh, C.K.
Chin, K.C. 
Chua, D.H.C. 
Lin, J.
Wee, A.T.S. 
Keywords: Cobalt
Membrane electrode assembly
Proton exchange membrane fuel cell
Issue Date: Oct-2009
Citation: Tang, Z., Poh, C.K., Chin, K.C., Chua, D.H.C., Lin, J., Wee, A.T.S. (2009-10). Cobalt coated electrodes for high efficiency PEM fuel cells by plasma sputtering deposition. Journal of Applied Electrochemistry 39 (10) : 1821-1826. ScholarBank@NUS Repository.
Abstract: Proton exchange membrane (PEM) fuel cell electrodes coated with ultra-thin Co layer have been successfully fabricated via plasma sputter-deposition. In order to investigate the influence of Co layers on the oxygen reduction reaction, a series of Co layers with different nominal thickness have been deposited into the cathode-membrane interface. The polarization curves confirmed visible enhancement in cell performance when a 5 nm Co layer on cathode gave rise to a high current density of 750 mA cm-2 at 0.6 V. Scanning electron microscopy showed that the sputter deposited 5 nm Co layer formed nanosized island structures on the porous electrode, while electrochemical impedance spectra confirmed that a reduction in the total impedance of the electrode led to the improvement of the membrane electrode assembly (MEA) performance. © 2009 Springer Science+Business Media B.V.
Source Title: Journal of Applied Electrochemistry
ISSN: 0021891X
DOI: 10.1007/s10800-009-9885-3
Appears in Collections:Staff Publications

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