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Cover Feature: Impact of Surface Defects on LaNiO 3 Perovskite Electrocatalysts for the Oxygen Evolution Reaction (Chem. Eur. J. 58/2021)
Author(s) -
Arandiyan Hamidreza,
Mofarah Sajjad S.,
Wang Yuan,
Cazorla Claudio,
Jampaiah Deshetti,
Garbrecht Magnus,
Wilson Karen,
Lee Adam F.,
Zhao Chuan,
Maschmeyer Thomas
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202103535
Subject(s) - tafel equation , overpotential , oxygen evolution , lanio , electrolyte , perovskite (structure) , thermal stability , oxygen , current density , materials science , oxygen reduction reaction , cover (algebra) , chemistry , chemical engineering , electrode , crystallography , electrochemistry , physics , optoelectronics , organic chemistry , quantum mechanics , dielectric , engineering , ferroelectricity , mechanical engineering
The impact of defect generation by thermal reduction on the structure and electrocatalytic performance of LaNiO 3 has been examined in a combined experimental and theoretical approach. Surface defects, predominantly surface oxygen vacancies, promote oxygen evolution over LaNiO 3 resulting in a significantly lower overpotential (380 mV) for a current density of 10 mA cm −2 , faster kinetics (70.8 mV dec −1 Tafel slope) and superior stability in alkaline electrolytes to conventionally prepared LaNiO 3 . More information can be found in the Full Paper by H. Arandiyan, Y. Wang, T. Maschmeyer et al. (DOI: 10.1002/chem.202102672).
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