Segmentation of Proton Exchange Membrane Fuel Cell (PEMFC) in the Land-Channel Direction

摘要

The land-channel geometry in a typical proton exchange membrane fuel cell (PEMFC) causes the non-uniform current generation in the land-channel direction. In order to measure the current density distribution in land-channel direction at sub-millimeter resolution, a new design and fabrication method are proposed. Ex-situ electronic resistance measurements were conducted to validate the design, and in-situ measurements with H_2 and air were performed to obtain the current distribution in the land-channel direction in dry and wet conditions.