Appropriate balance between methanol yield and power density in portable direct methanol fuel cell

Journal Reference

Chemical Engineering Journal, Volume 270, 2015, Pages 91–100.

Nicky Bogolowski, Jean-Francois Drillet,

DECHEMA-Forschungsinstitut, Theodor-Heuss-Allee 25, 60486 Frankfurt am Main, Germany.

Abstract

This work aimed at the development of efficient catalysts and gas diffusion electrodes for a portable direct methanol fuel cell. The influence of catalyst loading, methanol concentration, working temperature, cell orientation, microporous layer and membrane thickness on 5 cm2 cell performance were investigated. At 50 °C, a maximum power density of 84 mW cm−2 was calculated (50 mW cm−2 @ 400 mV) for the best performing MEA with a Nafion 117 membrane, 2 mgPt cm−2 at both anode and cathode with 2 M CH3OH solution and air at ambient pressure. This good performance is attributed to both the highly dense and reactive catalysts as well as the presence of a microporous layer at the cathode that allows an optimal mass transport of reactants and products within the gas diffusion electrode. Methanol yield was found to be principally dependent on methanol concentration feed at the anode. Best performances in terms of methanol yield were obtained with the 0.5 M methanol solution and amounted to about 75% at 40 mW cm−2 @ 400 mV.

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About the author

Nicky Bogolowski studied chemistry at Bonn university (Germany) and received his diploma in 2003. He started as junior scientist in the department of electrochemistry between 2003 and 2009. Since 2010 he´s working at DECHEMA Forschungsinstitut in Frankfurt a.M. in the department for chemical engineering, working on batteries and fuel cells

About the author

Jean-Francois Drillet studied at the University of Applied Sciences in Aachen and obtained his diploma in engineering in 1996. He worked as junior scientist at the University of Applied Sciences in Mannheim and obtained his master degree in chemical engineering there in 2003. In 2004, he changed to Dechema Forschungsinstitute (DFI) in Frankfurt a.M. and got his phD degree at the University of Erlangen in 2008. At the present time, he works as junior scientist at DFI and in charge of R&D cluster activities on batteries and fuel cells technologies
Appropriate balance between methanol yield power density in portable direct methanol fuel cell

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