Study of the effects of ionic liquid-modified cathodes and ceramic separators on MFC performance

Ortiz-Martínez, V. M., Gajda, I., Salar-García, M. J., Greenman, J., Hernández-Fernández, F. J. and Ieropoulos, I. (2016) Study of the effects of ionic liquid-modified cathodes and ceramic separators on MFC performance. Chemical Engineering Journal, 291. pp. 317-324. ISSN 1385-8947 Available from: http://eprints.uwe.ac.uk/28127

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Publisher's URL: http://dx.doi.org/10.1016/j.cej.2016.01.084

Abstract/Description

Ceramic-based MFC designs have proven to be a low cost alternative for power production and wastewater treatment. The use of ionic liquids in ceramic MFCs is explored for the first time in the present work in order to improve power output. The ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [EMIM][Tf2N], has been selected for this purpose due to its advantageous properties. The performance of activated carbon cathodes using polytetrafluoroethylene (PTFE) binder and different carbon diffusion layers (DL) (controls) are compared with two types of ionic liquid-modified cathodes (test). This work continues to study the performance of terracotta separators modified with the same ionic liquid, neat and also mixed with PTFE. While the results show operational limitations when the IL is integrated in the ceramic separator, there is a significant enhancement of the MFC performance when added as part of the activated layer mixture of the cathode, achieving up to 86.5% more power output in comparison with IL-free MFCs (from 229.78 μW to 428.65 μW). The addition of a layer of PTFE-mixed ionic liquid spread on the activated layer of the cathode also leads to an increase in power of approximately 37%.

Item Type:Article
Uncontrolled Keywords:ceramic separators, microbial fuel cell, ionic liquid, activated carbon cathodes, activated sludge
Faculty/Department:Faculty of Environment and Technology > Department of Engineering Design and Mathematics
ID Code:28127
Deposited By: I. Gajda
Deposited On:02 Feb 2016 11:35
Last Modified:16 Mar 2017 18:32

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