ABB PFSK113 7625013-S DCS BRUSH BLOCK
ABB PFSK113 7625013-S DCS BRUSH BLOCK
- CLs are made from precursor CL inks, which are colloidal dispersions of the ionomer and catalyst
particles, dispersed in solvent. CL studies are complicated by the multiple material types used
(varying ionomer chemistry, catalyst loading, carbon support type, solvents) and disparate ink
deposition and drying methods that render no two CLs alike; this makes it difficult to compare
across these different studies. Additionally, within the community, CL fabrication has traditionally
been treated as a black art, and the details of the fabrication process (ink composition, casting
method, etc.) are typically inconsistently reported, because emphasis has been placed on
understanding CL properties and performance and not the forces controlling that formation
process. However, it is increasingly clear that simply being able to characterize CLs is not enough. - To enable predictive control and rational design of CLs, it is vital to understand how and why (in
addition to what) specific microstructures form.