In this work, a low cost air-assisted cylindrical liquid jets spraying (ACLJS) system was developed to prepare high-performance catalyst-coated membranes (CCMs) for proton exchange membrane fuel cells (PEMFCs). The catalyst ink was flowed from a cylindrical orifice and was atomized by an air stream fed from a coaxial slit and sprayed directly onto the membrane, which was suctioned to a heated aluminum vacuum plate. The CCM pore architecture including size, distribution and volume can be controlled using various flow parameters, and the impact of spraying conditions on electrode structure and PEMFC performance was investigated. CCMs fabricated in the fiber-type break-up regime by ACLJS achieved very high performance during PEMFC testing, with the top-performing cells having a current density greater than 1900 mA/cm2 at 0.7 V under H2/O2 flows and 700 mA/cm2 under H2/Air at 1.5 bar(absolute) pressure and 60% gas RH, and 80°C cell temperature.
Published in Journal of Electrochemical Society, Volume 164, Issue 14, Fall 2016, pages E407-E413.
© The Author(s) 2016. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: firstname.lastname@example.org. [DOI: 10.1149/2.0981614jes] All rights reserved.
Peng, X., Omasta, T., Rigdon, W., & Mustain, W. (2016). Fabrication of High Performing PEMFC Catalyst-Coated Membranes with a Low Cost Air-Assisted Cylindrical Liquid Jets Spraying System. Journal Of The Electrochemical Society, 163(14), E407-E413. doi: 10.1149/2.0981614jes