File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher


Lee, Geunsik
Computational Research on Electronic Structure and Transport in Condensed Materials
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Low-temperature crystallization of LaFeO3 perovskite with inherent catalytically surface for the enhanced oxygen evolution reaction

Kim, Hee JunKim, Sang HeonKim, Sun-WooKim, Jin-KyeomCao, ChentianKim, YongchulKim, UngsooLee, GeunsikChoi, Jae-YoungOh, Hyung-SukSong, Hyun-CheolChoi, Won JunPark, HyesungBaik, Jeong Min
Issued Date
NANO ENERGY, v.105, pp.108003
This study reports a facile and economic method for LaFeO3 perovskite crystallization process at low temperature range from 300 °C to 500 °C and an outstanding oxygen evolution reaction (OER) catalyst based on inherent catalytically surface. As a key material for low temperature synthesis, cyanogel-peroxo-complex as a metastable molecular precursor was synthesized via ligand exchange using potassium cyanide solution to provide superoxo (O2–) ligand to Fe-CN-La gel structure, leading to a high degree of crystallinity with ideal ABO3 stoichiometry at low temperatures (400 ∼ 500 °C). Electrocatalysts based on LaFeO3 nanoparticles were fabricated, showing an outstanding OER performance with low overpotential of ∼ 438 mV at 100 mA/cm2 and small Tafel slope of 61 mV·dec–1 under alkaline conditions, better than commercialized available IrOx/C catalysts. Its OER performance is attributed to the inherent oxygen-deficient layer at the surface created at low temperature (300 °C). Long-term stability test shows no significant change (< 1%) in the potential during 50 h, indicating a high stability of such catalysts.
Elsevier BV
Keyword (Author)
Perovskite oxidesLow temperature synthesisCyanometallate coordination polymerInherent catalytically surfaceOxygen evolution reaction


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.