Abstract：
:Electrocatalysts for oxygen reduction are a critical component that may dramatically enhance the performance of fuel cells and metal-air batteries, which may provide the power for future electric vehicles. Here we report a novel bio-inspired composite electrocatalyst, iron phthalocyanine with an axial ligand anchored on single-walled carbon nanotubes, demonstrating higher electrocatalytic activity for oxygen reduction than the state-of-the-art Pt/C catalyst as well as exceptional durability during cycling in alkaline media. Theoretical calculations suggest that the rehybridization of Fe 3d orbitals with the ligand orbitals coordinated from the axial direction results in a significant change in electronic and geometric structure, which greatly increases the rate of oxygen reduction reaction. Our results demonstrate a new strategy to rationally design inexpensive and durable electrochemical oxygen reduction catalysts for metal-air batteries and fuel cells.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Cao R,Thapa R,Kim H,Xu X,Gyu Kim M,Li Q,Park N,Liu M,Cho Jdoi
10.1038/ncomms3076subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2076issn
2041-1723pii
ncomms3076journal_volume
4pub_type
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