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|Title:||Cobalt coated electrodes for high efficiency PEM fuel cells by plasma sputtering deposition||Authors:||Tang, Z.
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. https://doi.org/10.1007/s10800-009-9885-3||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||URI:||http://scholarbank.nus.edu.sg/handle/10635/86217||ISSN:||0021891X||DOI:||10.1007/s10800-009-9885-3|
|Appears in Collections:||Staff Publications|
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