Electrophoretic MEA Fabrication for High Performance DMFC
Anode for direct methanol fuel cell (DMFC) was fabricated on Nafion 117 membrane by electrophoretic deposition (EPD) method. An ethanol suspension containing Pt-Ru/C and Nafion ionomer was utilized, in which Pt-Ru/C and Nafion ionomer formed composite particles. The prepared electrode was tightly attached to the membrane without mechanical pressing and heat treatment. The electrode composition, i.e., the ratio between Pt-Ru/C and ionomer in the electrode, was controllable by Nafion content in the suspension, and strongly influenced on the DMFC performance. Accordingly, the anode with ionomer fraction of 26% exhibited the highest performance, which was more than twice as high as the performance attained in a standard electrode fabrication (hot press method).
A. R. Boccaccini, O. van der Biest, R. Clasen, T. Uchikoshi
H. Munakata et al., "Electrophoretic MEA Fabrication for High Performance DMFC", Key Engineering Materials, Vol. 412, pp. 249-252, 2009