论文标题
增强环境友好的铁电BA0.9SR0.1TI1-XSNXO3陶瓷的电气和能量储存特性
Enhanced electrocaloric and energy-storage properties of environment-friendly ferroelectric Ba0.9Sr0.1Ti1-xSnxO3 ceramics
论文作者
论文摘要
研究了通过常规固态反应方法制备的生态友好型铁电BA0.9SR0.1TI1-XSNXO3（BSTS-X）陶瓷的电气（EC）效应和能量存储性能。在我们的样品中发现了超过80％的明显能效。特别是，BSTS-5和BSTS-10样品分别在室温（RT）周围的温度范围内分别显示92％和88％的效率。直接的EC测量和基于热力学方法的间接方法用于表征EC效应，并产生一致的结果。在368 K时，BSTS-0获得了0.73 k mm/kV的最大电气反应性，在仅7.4 kV/cm的低施加电场下，绝热温度变化DT（EC）为0.55 k。随着SN含量的增加，BSTS-X陶瓷的EC响应降低，而其扩散性在广泛的温度范围内增加，以RT为中心。为我们的样品找到了一个显着的性能系数（COP> 26）。获得的结果表明，具有更高的EC效应和能源效率的生态友好材料，以实现潜在的固态制冷和能源存储设备。
The electrocaloric (EC) effect and energy storage properties of eco-friendly ferroelectric Ba0.9Sr0.1Ti1-xSnxO3 (BSTS-x) ceramics prepared by the conventional solid-state reaction method were studied. Significant energy efficiency exceeding 80% was found in our samples. In particular, BSTS-5 and BSTS-10 samples exhibit 92% and 88% efficiency, respectively, over a wide temperature range around room temperature (RT). Direct EC measurement and an indirect method based on the thermodynamic approach were used to characterize the EC effect, and both yielded consistent results. The largest electrocaloric responsivity of 0.73 K mm/kV was obtained for BSTS-0 at 368 K with an adiabatic temperature change DT(EC) of 0.55 K at a low applied electric field of only 7.4 kV/cm. With increasing Sn-content, the EC response of BSTS-x ceramics decreases, while their diffuseness increases over an extensive temperature range, centered at RT. A significant coefficient of performance (COP > 26) was found for our samples. The obtained results demonstrate the possibility of designing eco-friendly materials with higher EC effect and energy efficiency for potential solid-state refrigeration and energy storage devices.
