%0 Journal Article
%A Sarah A Berlinger
%A Samay Garg
%A Adam Z Weber
%B Current Opinion in Electrochemistry
%D 2021
%G eng
%P 100744
%R 10.1016/j.coelec.2021.100744
%T Multicomponent, multiphase interactions in fuel-cell inks
%V 29
%8 10/2021
%! Current Opinion in Electrochemistry
%X <p>Fuel-cell catalyst layers (CLs) are porous electrodes that are fabricated from CL inks: colloidal dispersions of catalyst particles and ion-conducting polymer (ionomer), dispersed in solvent(s). The complex interactions between the ink components ultimately dictate CL microstructure and electrochemical performance. To control the CL formation process and optimize fuel-cell performance, knowledge of these ink interactions is vital. In this review, we analyze data from ink-focused papers to elucidate how ink parameters (solvent type, ionomer-to-carbon ratio, etc.) impact ink interactions and CL performance. We then discuss these results in the context of the current understanding of two critical ink interactions: ionomer/solvent and ionomer/catalyst particle interactions.</p>