解锁高容量能量密度的Sm-doped Pb(Mg1/3Nb2/3) O3-PbTiO3薄膜通过菌株和域工程
Zouhair Hanani1, Jamal Belhadi2, Nina Daneu1
1Advanced Materials Department, Jožef Stefan Institute Jamova cesta 39 1000 Ljubljana Slovenia zouhair.hanani@ijs.si.
Journal of materials chemistry. C
|March 3, 2025
概括
Sm-doped放松剂铁电薄膜提供了特殊的能量储存. 这些Sm-PMN-30PT薄膜实现了超高的能量密度和效率,显示了先进的能量存储设备的巨大潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 储能 储能 储能 储能 储能 储能
背景情况:
- 放松铁电表现出高可回收能密度和效率,使它们成为储能应用的前景.
- 酸-酸-酸 (PMN-PT) 基材料被广泛研究它们的介电和压电特性.
研究的目的:
- 为了研究 (001) 导向和部分应力Sm-doped Pb(Mg1/3Nb2/3) O3-30PbTiO3 (Sm-PMN-30PT) 薄膜的结构,组成和能量储存特性.
- 为了将观察到的应变放松和域结构与能量储存性能相关联.
主要方法:
- 脉冲激光沉积 (PLD) 用于用SrRuO3电极在TbScO3基板上制造Sm-PMN-30PT薄膜.
- 相互空间映射 (RSM) 和几何相位分析 (GPA) 用于应变分析.
- 高角环状暗场扫描传输电子显微镜 (HAADF-STEM) 用于域结构特征.
主要成果:
- 在Sm-PMN-30PT薄膜中实现了116 J cm-3的超高能量密度和73%的效率.
- 证明了出色的热稳定性和无疲劳的储能性能.
- 通过薄膜厚度观察到逐渐的应变放松,导致印记的极化电场循环.
- 确定了一个无序的泥状域结构,具有相互连接的纳米域 (2-5 nm) 和倾斜的极化.
结论:
- 由于其独特的结构和域特征,Sm-PMN-30PT薄膜具有显著的储能能力.
- 这些发现强调了Sm-PMN-30PT薄膜在开发高容量储能装置方面的潜力.
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