低电场驱动的优质储能效应,通过构建共存玻璃,具有出色的热稳定性
Xueqing Fang1, Haoyu Wang1, Liqiang He2
1School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
ACS applied materials & interfaces
|February 23, 2024
概括
在无陶中解玻璃铁电状态提供了优越的能量储存. 这些材料实现了高能量密度和效率,即使在高温下,也超过了当前无选项的性能.
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:
- 铁电材料对于储能应用至关重要.
- 开发具有高能量密度和热稳定的无介电材料是一个关键的挑战.
- 玻璃铁电状态为先进的能量存储提供了独特的特性.
研究的目的:
- 为了研究解共存的玻璃铁电态的储能潜力.
- 在不同的条件下探索特定无陶组合物的性能.
- 为高温无介电材料建立一个新的范式.
主要方法:
- 利用相场模拟来建模材料的行为.
- 采用实验方法合成和表征陶样品.
- 在低电场和一系列温度下评估的储能密度 (Wr) 和效率 (η).
主要成果:
- 在室温可回收能量储存密度 (Wr) 超过2.7 J/cm3,在170 kV/cm时效率>80%.
- 在特定的Bi(Mg2/3Nb1/3) O3-(Bi0.5Na0.5) TiO3-BaTiO3-MnO2 (BNBT-BMN) 化合物中,证明了优越的能量储存和热稳定性 (293-430 K).
- 由于解,观察到加热后的性能提升,达到约2.9 J/cm3和约90%的效率在360 K时为x=10%.
结论:
- 解共存的玻璃状铁电态为优越的储能性能提供了途径,特别是在低电场下.
- BNBT-BMN陶具有出色的热稳定性,并且在高温应用中优于现有的无介电材料.
- 这项研究为开发用于储能设备的先进无材料建立了新的方向.
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