Strontium titanate: An all-in-one rechargeable energy storage material
Strontium titanate: An all-in-one rechargeable energy storage material
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DOI：
10.1016/j.jpowsour.2014.05.095
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发表时间：
2014-12-01
影响因子：
9.2
通讯作者：
Meyer, Dirk C.
中科院分区：
文献类型：
--
作者：
Hanzig, Juliane;Zschornak, Matthias;Meyer, Dirk C.
钛酸锶单晶中氧空位的重新分布是由外部电场引起的。我们在电铸期间和电铸之后立即进行了电测量，表明固有缺陷分离在过渡金属氧化物中建立了伴随电动势的非平衡状态。理论能量和熵计算方面的综合热力学推导表明，电场关闭后发生了放能电化学反应。基于该驱动力，本文报道了一体化可充电 SrTiO3 单晶储能概念的实验和理论证明。 (C) 2014 Elsevier B.V. 保留所有权利。
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.