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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Promotion of oxygen reduction by a bio-inspired tethered iron phthalocyanine carbon nanotube-based catalyst

Cited 34 times inthomson ciCited 6 times inthomson ci
Title
Promotion of oxygen reduction by a bio-inspired tethered iron phthalocyanine carbon nanotube-based catalyst
Author
Cao, RuiguoThapa, RanjitKim, HyejungXu, XiaodongKim, Min GyuLi, QingPark, NoejungLiu, MeilinCho, Jaephil
Keywords
METAL-AIR BATTERIES; FE-BASED CATALYSTS; PEM FUEL-CELLS; ACTIVE-SITES; ELECTROCATALYSTS; ELECTROREDUCTION; DIOXYGEN; SPECTROSCOPY; PORPHYRINS; CHALLENGES
Issue Date
201306
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.4, no., pp.2076 -
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.
URI
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DOI
http://dx.doi.org/10.1038/ncomms3076
ISSN
2041-1723
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ECHE_Journal Papers
SNS_Journal Papers

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