Charge compensation mechanisms in Li‐substituted high‐entropy oxides and influence on Li superionic conductivity | Zendy

Osenciat Nicolas | Zendy; Bérardan David | Zendy; Dragoe Diana | Zendy; Léridon Brigitte | Zendy; Holé Stéphane | Zendy; Meena Arun K. | Zendy; Franger Sylvain | Zendy; Dragoe Nita | Zendy

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Charge compensation mechanisms in Li‐substituted high‐entropy oxides and influence on Li superionic conductivity

Author(s) -

Osenciat Nicolas,

Bérardan David,

Dragoe Diana,

Léridon Brigitte,

Holé Stéphane,

Meena Arun K.,

Franger Sylvain,

Dragoe Nita

Publication year - 2019

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.16511

Subject(s) - thermogravimetric analysis , conductivity , oxide , analytical chemistry (journal) , materials science , cobalt , oxygen , electrical resistivity and conductivity , fast ion conductor , inorganic chemistry , ionic conductivity , chemistry , electrolyte , electrode , metallurgy , organic chemistry , chromatography , electrical engineering , engineering

The charge compensation mechanisms that occur when Li + substitutes a 2+ element in superionic conductor (MgCoNiCuZn)O high‐entropy oxide have been studied using a combination of thermogravimetric analysis and X‐ray photoemission spectroscopy. Depending on the concentration of Li + in the compound, the charge compensation involves first partial oxidation of Co 2+ into Co 3+ for low fraction of Li + , and then a combination of both the oxidation of cobalt and the formation of oxygen vacancies for large fraction of Li + .

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