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Methanol conditioning for improved performance of formic acid fuel cells

Affiliation:	1. Department of Chemical Engineering, University of Illinois, Urbana, IL 61801, USA;2. Department of Chemistry, University of Illinois, Urbana, IL 61801, USA;1. Dept. de Matemàtiques i Informàtica, Universitat de les Illes Balears, 07122 Palma de Mallorca, Illes Balears, Spain;2. Dept. de Matemàtiques, Universitat Autònoma de Barcelona, Edifici C, 08193, Bellaterra, Barcelona, Spain;1. School of Science and Technology – Physics Division, University of Camerino, Via Madonna delle Carceri, I-62032 Camerino, Italy;2. CNR, Istituto Officina dei Materiali – Perugia c/o Department of Physics and Geology, University of Perugia, Via A. Pascoli, I-06123 Perugia, Italy;3. Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, I-67100 L’Aquila, Italy;1. Department of Physics, Dokuz Eylül University, Tr-35160 İzmir, Turkey;2. Dokuz Eylül University, Graduate School of Natural and Applied Sciences, Turkey;1. Department of Computer Science, Technion, Israel Institute of Technology, Haifa 32000, Israel;2. School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore

Abstract:	This paper considers the effect of methanol pretreatment on the performance of a direct formic acid fuel cell (DFAFC). We find that conditioning of the cell in methanol results in a substantial increase in current. The current at 60 °C increases from 95 to 320 mA/cm² at 0.3 V. The maximum power density increases from 33 to 119 mW/cm². The cell resistance decreases from 0.37 to 0.32 Ω cm². CO stripping experiments show that the catalyst is not being greatly affected by these changes. Our interpretation of the data is that the anode layer of membrane electrolyte assembly (MEA) undergoes some change during the methanol conditioning. The change improves the performance.

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