Controlled functionalization of poly(4-methyl-1-pentene) films for high energy storage applications. Issue 13 (10th March 2016)

• Record Type: Journal Article
• Authors: Zhang, Min; Zhang, Lin; Zhu, Meng; Wang, Yiguang; Li, Nanwen; Zhang, Zhijie; Chen, Quan; An, Linan; Lin, Yuanhua; Nan, Cewen
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 13(2016)
• Page Start: 4797
• Page End: 4807
• Publication Date: 2016-03-10
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5ta09949h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A new family of poly(4-methyl-1-pentene) ionomers with high energy density at a high breakdown strength, high charge-discharge energy efficiency and a very narrow breakdown distribution for energy storage in future capacitor devices. Abstract : A new family of poly(4-methyl-1-pentene) ionomer [PMP-(NH3 ) x A- y ] ( x = 1, 2, 3 and A = Cl −, SO4 2−, PO4 3−, y = NH3 content) modified (NH3 + ) x A x − ionic groups has been synthesized. The ionomers were synthesised using either a traditional Ziegler–Natta or a metallocene catalyst for the copolymerisation of 4-methyl-1-pentene and bis(trimethylsilyl)amino-1-hexene. A systematic study was conducted on the effect of the subsequent work-up procedures that can prevent undesirable side reactions during the synthesis of the [PMP-(NH3 ) x A- y ] ionomers. The resulting PMP-based copolymers were carefully monitored by a combination of nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), mechanical properties, dielectric properties, and electric displacement–electric field ( D – E ) hysteresis loop measurements. Our results reveal that the [PMP-(NH3 ) x A- y ] ionomer films show a significantly enhanced dielectric constant (∼5) and higher breakdown field (∼612 MV m −1 ) as compared with pure PMP films. Additionally, these PMP-based films show good frequency and temperature stabilities (up to 160 °C). A reliable energy storage capacity above 7 J cm −3 can be obtained, and is twice the energy storage capacity of state-of-the-art biaxially oriented polypropylene films, which can be attractive for technological applications for energy storage devices.