Novel method for facile development of high-performance nanoframe catalysts using size and crystallographic face-controlled PtNi4 tetrahexahedral nanocrystals prepared through a co

About

The present technology provides a method for facile development of high-performance nanoframe catalysts using PtNi4 tetrahexahedral (THH) nanocrystals as precursors. The resultant Pt3Ni THH nanoframes possess an open, stable and high-indexed microstructure, which greatly improves catalytic performance in an acidic reaction environment. These nanoframes show high activity in catalyzing several fuel cell reactions, including formic acid oxidation, methanol oxidation, and oxygen reduction reaction. The nanoframes are stable, and remain intact even after 5000 electrochemical potential cycles in 0.1 M HClO4 solution without shape and composition degradation.

Key Benefits

Mass-Producible: Nanoframes using gas phase reactions that feature fast, stable and large-scale production.
Improved Catalytic Activity: Resultant Pt3Ni THH nanoframes have better defined surface structure that improves catalytic activity in several fuel cell reactions for many cycles without losing their shape and composition.
Quick: Formation of nanoframes takes only 45 minutes, as opposed to 12 or 24 hours in the acid etching approach.
Versatile: Developed process can be adopted for other systems, such as Pt-Fe, Au-Fe, Pd-Ni systems, to engineer catalysts with novel hollow structures.

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