A modified cathode catalyst layer with optimum electrode exposure for high current density and durable proton exchange membrane fuel cell operation

2021 ◽  
Vol 496 ◽  
pp. 229816
Author(s):  
Dabin Han ◽  
Maxwell Tsipoaka ◽  
Sangaraju Shanmugam
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
High Current Density ◽  
Catalyst Layer ◽  
Proton Exchange ◽  
Cathode Catalyst ◽  
High Current ◽  
Cathode Catalyst Layer ◽  
Exchange Membrane ◽  
Fuel Cell Operation

Nanofiber Cathode Catalyst Layer Model for a Proton Exchange Membrane Fuel Cell

2014 ◽  
Vol 11 (4) ◽  
Author(s):  
Dennis O. Dever ◽  
Richard A. Cairncross ◽  
Yossef A. Elabd
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Catalyst Layer ◽  
Proton Exchange ◽  
Cell Performance ◽  
Alternative Methods ◽  
Cathode Catalyst ◽  
Fuel Cell Performance ◽  
Cathode Catalyst Layer ◽  
Exchange Membrane

The cathode catalyst layer in a proton exchange membrane fuel cell is now known to contain ionomer nanofibers and experiments have demonstrated a fuel cell performance increase of ∼10% due to those nanofibers. The experiments demonstrate that ionomer nanofibers have proton conductivities that exceed those of the bulk form of the ionomer by more than an order of magnitude. A new model of a proton exchange membrane fuel cell is presented here that predicts the effect of nanofibers on cell performance in terms of the enhanced nanofiber proton conductivity and other relevant variables. The model peak cell power density is ∼7% greater for the case with 10% of the cathode catalyst layer ionomer in nanofiber form versus the same case without nanofibers. This difference is consistent with trends observed in previously published experimental results. These results are significant since they suggest alternative methods to reduce platinum loading in fuel cells and to optimize fuel cell performance.

Ionomer content effect on charge and gas transport in the cathode catalyst layer of proton-exchange membrane fuel cells

2021 ◽  
Vol 490 ◽  
pp. 229531
Author(s):  
Yurii V. Yakovlev ◽  
Yevheniia V. Lobko ◽  
Maryna Vorokhta ◽  
Jaroslava Nováková ◽  
Michal Mazur ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Gas Transport ◽  
Catalyst Layer ◽  
Proton Exchange ◽  
Cathode Catalyst ◽  
Cathode Catalyst Layer ◽  
Exchange Membrane
Sign in / Sign up

Export Citation Format

Share Document