期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 6, 页码 8226-8234出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c18544
关键词
TiOx/PVDF nanocomposites; dielectric property; breakdown strength; energy storage density; finite element simulation
资金
- Guangdong Basic and Applied Basic Research Foundation [2021A1515110980]
- Natural Science Foundation of Guangdong Province [2020A1515110601, 2019A1515110273]
- Guangdong Department of Education
- State Key Lab of Rail Traffic Control and Safety for open project [RCS2019K010]
Nanofiller/polymer nanocomposites have great potential in energy conversion for wearable and flexible electronics. This study fabricates TiOx nanoparticles with a partially hollow structure and combines them with PVDF to achieve high energy storage performance. The optimized structure of partially hollow TiOx nanoparticles enhances the breakdown strength of the nanocomposites. This work provides a new approach for structurally designing and fabricating low-loading polymer-based nanocomposites for energy storage applications in next-generation flexible electronics.
Nanofiller/polymer nanocomposites are promising dielectrics for energy harvesting to be applied in wearable and flexible electronics. The structural design of the nanofillers plays a vital role to improve the energy storage performance of the related nanocomposites. Here, we fabricate a flexible device based on nonsolid titanium oxide (TiOx) nanoparticles/poly(vinylidene fluoride) (PVDF) to achieve enhanced energy storage performance at low loading. The room-temperature oxidation method is used to oxidize two-dimensional MXene (Ti3C2Tx) flakes to form partially hollow TiOx nanoparticles. Taking advantage of this structure, the flexible TiOx nanoparticles/ PVDF nanocomposite with an ultralow loading content of 1 wt % nanofillers shows high energy storage performance, including a dielectric constant of approximate to 22 at 1 kHz, a breakdown strength of approximate to 480 MV m(-1), and an energy storage density of 7.43 J cm(-3). The finite element simulation further reveals that the optimization of the energy storage performance is ascribed to the lower electric potential among the partially hollow TiOx nanoparticles, which enhances the breakdown strength of the nanocomposites. This work opens a new avenue to structurally design and fabricate low-loading polymer-based nanocomposites for energy storage applications in next-generation flexible electronics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据