Atomically Isolated Iron Atom Anchored on Carbon Nanotubes for Oxygen Reduction Reaction | Zendy

Dong Liu | Zendy; Jincheng Li | Zendy; Qiurong Shi | Zendy; Shuo Feng | Zendy; Zhaoyuan Lyu | Zendy; Shichao Ding | Zendy; Leiduan Hao | Zendy; Qiang Zhang | Zendy; Chenhui Wang | Zendy; Mingjie Xu | Zendy; Tao Li | Zendy; Erik Sarnello | Zendy; Dan Du | Zendy; Yuehe Lin | Zendy

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Atomically Isolated Iron Atom Anchored on Carbon Nanotubes for Oxygen Reduction Reaction

Author(s) -

Dong Liu,

Jincheng Li,

Qiurong Shi,

Shuo Feng,

Zhaoyuan Lyu,

Shichao Ding,

Leiduan Hao,

Qiang Zhang,

Chenhui Wang,

Mingjie Xu,

Tao Li,

Erik Sarnello,

Dan Du,

Yuehe Lin

Publication year - 2019

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.9b12054

Subject(s) - electrocatalyst , materials science , catalysis , carbon nanotube , carbon fibers , pyrolysis , chemical engineering , metal , nanotechnology , oxygen reduction reaction , atom (system on chip) , electrolyte , electrochemistry , electrode , chemistry , organic chemistry , metallurgy , composite material , composite number , computer science , engineering , embedded system

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 one-pot 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 x active sites, showing ultrahigh ORR activity (half-wave potential: 0.93 V, kinetic current density: 59.8 mA/cm 2 at 0.8 V), better than that of commercial Pt/C (half-wave potential: 0.91 V; kinetic current density: 38.0 mA/cm 2 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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