期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 886, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161192
关键词
Antiferroelectric; Negative electrocaloric effect; Composite electrode; Sol-gel
资金
- National Natural Science Foundation of China [51975541, 62001431, 61704159]
- National Key R&D Program of China [2018YFE0115500, 2019YFF0301802]
- Shanxi Scholarship Council of China [2020-112]
Antiferroelectric thin films exhibit outstanding negative electrocaloric effect and show potential as candidates for solid-state refrigeration technology. The use of composite electrodes can result in better electric conductivity and a larger negative electrocaloric effect.
Antiferroelectric thin films have exhibited outstanding negative electrocaloric effect (ECE), which are potential candidate regarding to the solid-state refrigeration technology. In this work, Pb0.92La0.02ZrO3 (PLZ) antiferroelectric thin films were prepared on LaNiO3(LNO)/Pt electrode and LNO electrode by sol-gel method. Giant negative electrocaloric effect (Delta T similar to -13.2 K) can observed in wide temperature range (213-493 K) that deposited on composite electrode, which can be attributed to better electric conductivity of LNO/Pt composite electrode than LNO electrode. In addition to outstanding negative ECE, positive ECE also can be obtained near curie temperature, which is caused by phase transition from ferroelectric (FE) to paraelectric (PE) state. The optimized ECE property contributed to the phase transition and introduction of composite electrode, which pave the giant prospect considering high-efficiency solid-state refrigeration devices through combination of positive and negative ECE. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据