在聚合物相位结构的调节下高能储存
Yao Su1,2, Zhaobo Liu3, Dandan Yang4
1Faculty of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, China.
Small (Weinheim an der Bergstrasse, Germany)
|January 13, 2025
概括
用于储能的高性能介电纳米复合材料是使用PVDF矩阵中的核心外BaTiO3@Polyvinylpyrrolidone (BT@PVP) 纳米粒子开发的. 这种方法显著提高了能量密度和充/放电效率.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术纳米技术
背景情况:
- 介电纳米复合材料对于储能应用至关重要.
- 在这些材料中实现高能量密度和充/放电效率是一个重大挑战.
研究的目的:
- 开发高性能介电纳米复合材料,用于增强能量存储.
- 为了研究核心外 BaTiO3@Polyvinylpyrrolidone (BT@PVP) 纳米颗粒在聚乙烯化物 (PVDF) 矩阵中的作用.
主要方法:
- 准备核心外结构的BaTiO3@Polyvinylpyrrolidone (BT@PVP) 纳米粒子.
- 将BT@PVP纳米粒子纳入半晶体聚乙烯化物 (PVDF) 基质中,以形成纳米复合材料薄膜.
- 纳米复合材料的介电性质和储能性能的表征.
主要成果:
- 具有5体积%BT@PVP的BT@PVP/PVDF纳米复合材料薄膜在458 MV m-1.1时表现出18.39 J cm-3的最大能量密度 (Ue).
- 这是一个显著的改善,大约是比BT/PVDF高4倍,比BOPP高9倍.
- 铁电无机填充PVDF复合材料的最高充/放电效率 (η) 为79.80%,达到79.80%.
结论:
- 增强的性能归因于无机有机纳米复合材料和PVDF矩阵之间的接口合,由PVP涂层和挤出以及BaTiO3.3的极化促进.
- 本研究提出了一种有效的方法来设计用于储能应用的高性能介电聚合物纳米复合材料.
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