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Enhancing Electrocatalytic Oxygen Reduction on MnO 2 with Vacancies
Author(s) -
Cheng Fangyi,
Zhang Tianran,
Zhang Yi,
Du Jing,
Han Xiaopeng,
Chen Jun
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201208582
Subject(s) - nanocrystalline material , oxygen , annealing (glass) , oxygen reduction , catalysis , oxide , materials science , inorganic chemistry , electrocatalyst , chemical engineering , chemistry , nanotechnology , metallurgy , electrochemistry , electrode , organic chemistry , biochemistry , engineering
Oxygen‐vacant nanocrystalline MnO 2 has been prepared by the simple process of annealing pristine oxide in Ar or O 2 . Both experimental and computational studies indicate that the catalytic activity of MnO 2 towards oxygen reduction is enhanced by introducing a modest concentration of oxygen vacancies.