Journal article
Atomically Isolated Iron Atom Anchored on Carbon Nanotubes for Oxygen Reduction Reaction
ACS applied materials & interfaces, Vol.11(43), pp.39820-39826
10/30/2019
PMID: 31560188
Abstract
Recently, electrocatalysts based on anchored dispersive/isolated single metal atoms on conductive carbon supports have demonstrated great promise to substitute costly Pt for the oxygen reduction reaction (ORR) in the field of fuel cells or metal -air batteries. However, developments of cost-efficient single -atom Fe catalysts with high activities are still facing various hardships. Here, we developed a facile way to synthesize isolated iron atoms anchored on the carbon nanotube (CNT) involving a onepot pyrrole polymerization on a self-degraded organic template and a subsequent pyrolysis. The as -obtained electrocatalyst possessed unique characteristics of abundant nanopores in the wall of conductive CNTs to host the abundant atomic Fe -N active sites, showing ultrahigh ORR activity (half-wave potential: 0.93 V, kinetic current density: 59.8 mA/cm2 at 0.8 V), better than that of commercial Pt/C (half-wave potential: 0.91 V; kinetic current density: 38.0 mA/cm2 at 0.8 V) in an alkaline electrolyte. Furthermore, good ORR activity has been proven in acidic solution with a half-wave -potential of 0.73 V.
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Details
- Title
- Atomically Isolated Iron Atom Anchored on Carbon Nanotubes for Oxygen Reduction Reaction
- Creators
- Dong Liu - Washington State UniversityJin-Cheng Li - Washington State UniversityQiurong Shi - Washington State UniversityShuo Feng - Washington State UniversityZhaoyuan Lyu - Washington State UniversityShichao Ding - Washington State UniversityLeiduan Hao - Washington State UniversityQiang Zhang - Washington State UniversityChenhui Wang - Washington State UniversityMingjie Xu - University of California, IrvineTao Li - Northern Illinois UniversityErik Sarnello - Argonne National LaboratoryDan Du - Washington State UniversityYuehe Lin - Washington State University
- Publication Details
- ACS applied materials & interfaces, Vol.11(43), pp.39820-39826
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Amer Chemical Soc
- Number of pages
- 7
- Grant note
- Northern Illinois University AC02-06CH11357 / DOE Office of Science, Argonne National Laboratory Washington State University 201706180050 / China Scholarship Council
- Identifiers
- 99901227846701842
- Language
- English
- Resource Type
- Journal article