Feasibility Of Titanium-based Materials For PEMFC Bipolar Plates Using Powder Metallurgy And Surface Modification Approaches

Authors:

Carlos Romero (Universidad Carlos III de Madrid, Spain),
Davide Benedetto (Universidad Carlos III de Madrid, Spain)

Abstract:

Bipolar plate (BP) materials and designs are critical for the performance of a PEMFC and a PEMEC due to their role as reactant and product distributor and electron transporter between cells. With the goal of increasing the power density of the PEMFC stacks, especially for transportation, the weight of the bipolar plate is also an important parameter. Titanium is a material that is a promising alternative to stainless-steel to manufacture light, metallic-based BP if some of its challenges are addressed, one of them being the passivation of its surface during operation, that creates ohmic losses. The aim of this work is to assess the use of powder metallurgy to manufacture titanium-based bipolar plates with the ability to obtain alternative designs for the flow field and the use of suitable surface modification techniques that can improve the performance.

DOI:

https://doi.org/10.59499/WP225370544