材料科学
聚丙烯
氮化硼
纳米复合材料
纳米片
电介质
电容器
马来酸酐
储能
复合材料
高-κ电介质
三元运算
化学工程
共聚物
电压
聚合物
纳米技术
电气工程
功率(物理)
程序设计语言
工程类
计算机科学
光电子学
物理
量子力学
作者
Ciyao Wang,Zhaoliang Xing,Shiyu Yan,L.N. Shi,Chuncheng Hao,Qingquan Liu
标识
DOI:10.1016/j.materresbull.2022.111978
摘要
With the development of advanced power system, high energy storage polymer film capacitors have attracted more and more attention. Polypropylene (PP) membrane is the most commonly used polymer based membrane, accounting for 70% of the total market share of products. Due to its low dielectric loss, it has a high charge-discharge efficiency (η). However, its inherently low dielectric constant (2.2 at 1 kHz) seriously hinders the increase of energy storage density (1–2 J/cm3). In this study, a ternary PP nanocomposite are prepared by melting blending and die pressing crosslinking, which greatly improved the capacitive properties of PP films. The discharge energy density (Ue) of PP nanocomposite films increased from 1.63 J/cm3 to 4.11 J/cm3 by adding a small amount (1 wt%) of BNNSs into PP matrix. Ue increased significantly (152.1%). By utilizing the special layered structure provided by BNNSs, the energy storage capacity of PP/ PP-g-MAH /BNNSs is significantly improved.
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