Platinum Alloy Fuel-Cell Catalysts

What this topic covers

How alloying can improve oxygen-reduction activity or reduce platinum intensity.

Core energy-system ideas

Alloying platinum with selected metals can change adsorption and surface structure.

Some alloy catalysts provide higher mass activity than pure platinum.

Composition, processing and activation are specialized and are not given here.

Important tradeoffs

Catalyst-layer performance emerges from reaction kinetics and transport at the same time.

Material and performance evidence

Lower platinum loading can increase sensitivity to local transport or degradation effects.

Lifecycle perspective

Manufacturing scrap is part of platinum material accounting and can be an important recycling stream.