A novel tubular cathode for the direct methanol fuel cell (DMFC) is proposed, based on a tubular titanium mesh. A dip-coating method has been developed for its fabrication. The tubular cathode is composed of titanium mesh, a cathode diffusion layer, a catalyst layer, and a recast Nafion® film. The titanium mesh is present at the inner circumference of the diffusion layer, while the recast Nafion® film is at the outer circumference of the catalyst layer. A DMFC single cell with a 3.5 mgPt cm tubular cathode was able to perform as well, in terms of power density, as a conventional planar DMFC. A peak power density of 9 mW cm was reached under atmospheric air at 25 °C.
Shoo, Z-G., Zhang, H., Lin, W-F., Zhu, F., & Christensen, P. A. (2006). Tubular cathode prepared by a dip-coating method for low temperature DMFC. Frontiers in Fuel Cells, 6(5), 326-330. https://doi.org/10.1002/fuce.200500264