Pt Black & Pt on carbon

Pt-Ru Black, Pt-Ru on carbon

Pt-Ir Black, Pt-Ir on Vulcan

Pt-Pd Black, Pt-Pd on carbon

Pt-Fe on carbon

Pt-Co on carbon

Pt-Ni on carbon

Pt-Cu on carbon

Pt-Sn on carbon

Pt-Cr on carbon

Pt-Rh Black