Improving the Energy Density and Efficiency of the Linear Polymer PMMA with a Double-Bond Fluoropolymer at Elevated Temperatures

Abstract

A variety of applications can be found for high-temperature film capacitors, including energy storage components and pulsed power sources. In this work, in order to increase the energy density ( U e ), poly(vinylidene fluoride-chlorotrifluoroethylene-double bond) (P-DB) is introduced into poly(methyl methacrylate) (PMMA) to manufacture composite films by a solution casting process. In the case of the pure PMMA film, there is significant improvement in the polarization ( P max ) and breakdown field ( E b ) of the composite film. These improvements can effectively increase the U e of the composite film at room temperature and the elevated temperature. The results show that at an elevated temperature of 90 °C and at 350 MV/m, the U e of 40 vol % P-DB reaches 8.7 J/cm 3 , and the efficiency (η) of 77% is also considerable. Compared with biaxially oriented polypropylene (2.0 J/cm 3 ), the proposed film exhibits 4 times enhancement in the energy storage density, meaning that it can be an energy storage capacitor with huge potential at high temperatures.

Methyl Methacrylate-co-glycidyl Methacrylate-Based Dielectric Films with High Breakdown Strength and Discharge Energy Density Tailored by PVDF

“…As for a lot of studies, it is difficult to gain high energy density and high breakdown strength at the same time. Compared with other reported studies, in Figure , ,,− the 30%PVDF/MG shows the merit of both high U e and high E b in this work. The biggest difference is that we have prepared a new linear MG copolymer as the matrix with the organic fillers of PVDF.…”

Preparation of Poly(guaiacol methacrylate-methyl methacrylate) Dielectric Films through Biobased Origin Guaiacol

“…Figure compares the η of P­(GEMA-MMA)-1:7 with the literature results. It could be found that the η of P­(GEMA-MMA)-1:7 outperforms most of that of the PMMA composite reported by other researchers, ,− and a high enough η is necessary for the practical application of dielectric film capacitors.…”

Achieving Synergistic Improvement in Dielectric and Energy Storage Properties of All‐Organic Poly(Methyl Methacrylate)‐Based Copolymers Via Establishing Charge Traps

“…As a result, the P(MMA-co-MHT)1 exhibits outstanding U e and η. [21,27,37,[47][48][49][50][51][52][53][54][55][56][57] In addition, the ferroelectric analyzer is used to test the cyclic stability of P(MMA-co-MHT)1 film. As displayed in Figure 14b, the number of cycles increased from 1 to 10 6 at 200 MV m −1 , and the P max only changed from 0.948 to 0.943 μC cm −2 , indicating that the prepared polymer film has good stability and application value.…”

“…have added poly(vinylidene fluoride‐chlorotrifluoroethylene)‐double bond (P‐DB) into PMMA to prepare blended films via the solution casting method. [ 37 ] In contrast to pure PMMA films, the polarizability and E b of the blended films are significantly improved. At 400 MV m −1 , the U e value of 40 vol% p‐DB/PMMA composite reaches 9.3 J cm −3 with an efficiency of 86% at room temperature.…”