Novel method for facile development of high-performance nanoframe catalysts using size and crystallographic face-controlled PtNi4 tetrahexahedral nanocrystals prepared through a colloidal synthesis as precursors
Background:
Pt-based nanoframes are a new class of nanomaterials that have great potential as high performance catalysts. However, their formation through acid etching demands long reaction time and often yields ill-defined surface structures.
Technology Overview:
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.
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Advantages:
Intellectual Property Summary: