期刊
JOURNAL OF POWER SOURCES
卷 267, 期 -, 页码 700-705出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.05.095
关键词
Solid state energy storage; Transition metal oxides; Defects; Density functional theory
资金
- Federal Ministry of Education and Research (BMBF) [03EK3029A]
- HGF-funded Virtual Institute MEMRIOX (Memory Effects in Resistive Ion-beam Modified Oxides) [VH-VI-422]
- European Social Fund (Europa fordert Sachsen)
- Ministry of Science and Art of Saxony via Landesinnovationsstipendium [100111044]
Redistribution of oxygen vacancies in a strontium titanate single crystal is caused by an external electric field. We present electrical measurements during and directly after electroformation, showing that intrinsic defect separation establishes a non-equilibrium state in the transition metal oxide accompanied by an electromotive force. A comprehensive thermodynamic deduction in terms of theoretical energy and entropy calculations indicate an exergonic electrochemical reaction after the electric field is switched off. Based on that driving force the experimental and theoretical proof of concept of an all-in-one rechargeable SrTiO3 single crystal energy storage is reported here. (C) 2014 Elsevier B.V. All rights reserved.
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