High-Conductive Protonated Layered Oxides from H2 O Vapor-Annealed Brownmillerites

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 48 vom: 01. Dez., Seite e2104623
1. Verfasser:	Hu, Songbai (VerfasserIn)
Weitere Verfasser:	Zhu, Yuanmin, Han, Wenqiao, Li, Xiaowen, Ji, Yanjiang, Ye, Mao, Jin, Cai, Liu, Qi, Hu, Sixia, Wang, Jiaou, Wang, Junling, He, Jiaqing, Cazorla, Claudio, Chen, Lang
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2021
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article brownmillerite conductivity layered oxides protons water vapor

Beschreibung
Zusammenfassung:	© 2021 Wiley-VCH GmbH. Protonated 3d transition-metal oxides often display low electronic conduction, which hampers their application in electric, magnetic, thermoelectric, and catalytic fields. Electronic conduction can be enhanced by co-inserting oxygen acceptors simultaneously. However, the currently used redox approaches hinder protons and oxygen ions co-insertion due to the selective switching issues. Here, a thermal hydration strategy for systematically exploring the synthesis of conductive protonated oxides from 3d transition-metal oxides is introduced. This strategy is illustrated by synthesizing a novel layered-oxide SrCoO3 H from the brownmillerite SrCoO2.5 . Compared to the insulating SrCoO2.5 , SrCoO3 H exhibits an unprecedented high electronic conductivity above room temperature, water uptake at 250 °C, and a thermoelectric power factor of up to 1.2 mW K-2 m-1 at 300 K. These findings open up opportunities for creating high-conductive protonated layered oxides by protons and oxygen ions co-doping
Beschreibung:	Date Revised 01.12.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202104623