Blends based P(VDF-CTFE) with quenching in ice water and PLZST modification with high energy storage performance. (12th August 2020)

• Record Type: Journal Article
• Authors: Li, Yang; Xiao, Jie; Li, Lili; Ye, Jianfei; Wen, Fei; Dong, Peng; Xie, Yongmin; Ding, Jiao; Zhang, Yingjie
• Is Part Of: Polymer. Volume 202(2020)
• Publication Date: 2020-08-12
• Subjects: P(VDF-CTFE) -- PLZST ceramics -- Quenching -- Energy storage performance; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2020.122727
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Polymer nanocomposites that consist of ceramic fillers of nanoscale and a flexible polymer matrix exhibit excellent dielectric and electric properties and thus are considered as promising dielectric layers in high performance energy-storage capacitors, which are required in many modern electronics and electric systems. In this paper, silane coupling agent is used to chemically modify the surface of lead lanthanum zirconium stannum titanium (PLZST) powders, and they are treated with different methods. It is discovered that the silane coupling agent can significantly strengthen the connection between particles and P(VDF-CTFE) polymer matrix. With quenching in ice water and modification, the dielectric properties and energy storage performance of the nanocomposites are both enhanced. Dielectric permittivity and discharged energy density of the quenched & modified sample are 27 and 2.9 J/cm 3 (200 MV/m), respectively, which are higher than those of the natural cooling sample without modification (11 and 1.4 J/cm 3 ). This paper will provide a promising candidate for high-performance energy storage dielectric composites, which are extremely desirable for power supply systems and advanced electronics. Graphical abstract: Image 1 Highlights: The relationship between the surface modification of fillers and the quenching of composites is studied systematically. Dielectric permittivity and discharged energy density are improved by surface modification of fillers and quenching treatment. The dielectric permittivity and discharged energy density of the treatment sample is two times that of untreated sample.