Neergat, M and Shukla, AK (2002) Effect of Diffusion-Layer Morphology on the Performance of Solid-Polymer-Electrolyte Direct Methanol Fuel Cells. In: Journal of Power Sources, 104 (2). pp. 289-294.
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The performance of solid-polymer-electrolyte direct methanol fuel cells (SPE-DMFCs) is substantially influenced by the morphology of the gas diffusion-layer in the catalytic electrodes. Cells utilising gas diffusion-layers made with high surface-area Ketjen Black carbon, at an optimised thickness, show better performance compared with cells utilising Vulcan XC-72 carbon or ‘acetylene black’ carbon in the diffusion-layer. The cells with a hydrophilic diffusion-layer on the anodes and a hydrophobic diffusion-layer on the cathodes yield better performance. The cells with oxygen or air as the oxidant gave power density of 250 or 105 mW $cm^ - ^2$, respectively, at an operational temperature of 90 °C and 2 bar pressure.
|Item Type:||Journal Article|
|Additional Information:||The Copyright of this article belongs to Elsevier.|
|Keywords:||Direct methanol fuel cells;Diffusion-layer morphology;High surface-area carbon|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||02 Jun 2006|
|Last Modified:||19 Sep 2010 04:28|
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