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High performance alkaline-acid direct glycerol fuel cells for portable power supplies via electrode structure design
Affiliation:1. Chemical Engineering Practice School (ChEPS), Department of Chemical Engineering, Faculty of Engineering, King Mongkut''s University of Technology Thonburi, 126 Pracha-Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Thailand;2. Fuel Cell and Hydrogen Research and Engineering Center, Pilot Plant Development and Training Institute (PDTI), King Mongkut''s University of Technology Thonburi, 126 Pracha-Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Thailand;3. Department of Chemical Engineering, Faculty of Engineering, King Mongkut''s University of Technology Thonburi, 126 Pracha-Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Thailand;1. Eskisehir Technical University, Faculty of Science, Department of Physics, Yunusemre Campus, 26470 Tepebasi, Eskisehir, Turkey;2. Central Research Laboratory, Eskisehir Osmangazi University, Eskisehir, Turkey;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, PR China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China;3. Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin, PR China;4. Department of Chemical Engineering, Renai College of Tianjin University, Tianjin, 301636, PR China;1. School of Mechatronic Engineering, Xi''an Technological University, Xi''an, 710021, China;2. Department of Electrical Engineering, University of Bonab, Bonab, Iran;3. Social Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand;1. Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, IL, 61801, United States;2. Department of Mechanical Engineering, Jordan University of Science and Technology, P.O.Box 3030, Irbid, 22110, Jordan
Abstract:Alkaline-acid direct glycerol fuel cells (AA-DGFC) were fabricated and primarily proven to be used as portable power generating devices. Pt/C catalyst was used as electrocatalyst for both anode and cathode. The optimal operating condition for cathode was firstly tested. Then the effects of types of backing and microporous layer on the cell performance and stability were investigated to obtain the optimal electrode structure. The cell performance was determined by using both chronoamperometry technique at a constant voltage of 0.4 V, and cell polarization with impedance measurement. The maximum peak power density obtained from the cell was 375 mW cm−2 and the highest average current density discharged from the cell was 451 mA cm−2. Non-wetproof carbon cloth is suitable as the backing layer for both the anode and cathode. Although MPL did not directly affect the cell performance, it greatly improved stability of the current discharged during chronoamperometric test. The cathode favors hydrophilic MPL, while hydrophobic MPL was preferred on the anode.
Keywords:Alkaline-acid direct glycerol fuel cell  Backing layer  Microporous layer  Hydrophobicity  Hydrophilicity  Mass transport
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