Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells

Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays has been designed and constructed for fuel cells. The concept is realized by hydrothermal synthesis and physical vapor deposition method. Beneficial from its structural advantages, a power density of 17.02 kW gPt−1 (anode) and 14.38 kW gPt−1 (cathode) has been achieved. And the advanced catalyst layer presented enhanced durability over the conventional catalyst layer.336