Reducing oxygen-transport resistance within a catalyst layer for fuel cells by adopting an intrinsically microporous ionomer†
Abstract
Herein, a sulfonated ionomer with intrinsic microporosity was designed as a catalyst binder in a low-Pt-loaded fuel cell to construct a good triple-phase boundary, achieving an obvious 57% reduction of local oxygen-transport resistance and a notable 47% increase in peak power density of up to 1233 mW cm−2.