The in-plane thermal conductivity and the contact resistance of the components of the membrane electrode assembly in proton exchange membrane fuel cells

Effective diffusivity of polymer electrolyte fuel cell gas diffusion layers: An overview and numerical study

“…the direction normal to the catalyst layer. It is noteworthy that the relatively higher through-plane GDL resistance has been demonstrated to other modes of transport in our previous investigations, namely mass convection [10e12], electrical conduction [13] and thermal conduction [14,15]. In this paper, we review the investigations that have been conducted to estimate the effective diffusivity of the porous layers in PEFCs, particularly the GDLs.…”

Characterization of Thermal and Electronic Conductivities of Catalyst Layers of Polymer Electrolyte Membrane Fuel Cells

“…Available experimental studies on thermal and electronic conductivities of CLs , have used specific substrate(s) and sample preparation techniques. Accordingly, some questions have remained unanswered, in particular, whether CLs on the substrates chosen for the ex situ measurements differ from CLs used in a fuel cell product.…”

“…The different thicknesses are often required for deconvoluting the CL bulk signal from parasitic signals (e.g., the substrate signal). Some instances include ex situ thermal and electronic conductivity tests , . For these tests to be relevant, microstructure of the characterized samples should be as comparable as possible to the microstructure of the desired CL in an actual MEA.…”

Thermal conductivity of catalyst layer of polymer electrolyte membrane fuel cells: Part 2 – Analytical modeling

“…However, all the performed studies on the thermal conductivity of the CL [3,11,24,25] are purely experimental, and, to the authors' best knowledge, no expression for the thermal conductivity of the CL can be found in the open literature. Such expressions are necessary to correlate the thermal conductivity of the CL to its salient structural parameters.…”