Fast discharge and high energy density of nanocomposite capacitors using Ba0.6Sr0.4TiO3 nanofibers. Issue 13 (October 2016)

• Record Type: Journal Article
• Authors: Pan, Z.B.; Yao, L.M.; Zhai, J.W.; Liu, S.H.; Yang, K.; Wang, H.T.; Liu, J.H.
• Is Part Of: Ceramics international. Volume 42:Issue 13(2016)
• Page Start: 14667
• Page End: 14674
• Publication Date: 2016-10
• Subjects: Ba0.6Sr0.4TiO3 nanofibers -- Poly(vinylidene fluoride) -- Nanocomposites -- Energy density -- Capacitor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.06.090
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Nanocomposites combining high breakdown strength (BDS) polymer and high dielectric permittivity ceramic fillers have shown great potential for pulsed power application. Here a new composite material based on surface-functionalized Ba0.6 Sr0.4 TiO3 nanofibers/poly(vinylidene fluoride) (BST NF/PVDF) has been prepared by solution casting. The nanocomposites containing 2.5 vol% isopropyl dioleic(dioctylphosphate) titanate (NDZ 101)-functionalized BST NF (N-h-BST NF) have large energy density of 6.95 J cm −3 at 380 MV m −1, which is 1.85 times larger than that of the pure PVDF at the same electric field. Also, the discharge speed of the nanocomposites containing 7.5 vol% N-h-BST NF is approximately 0.11 μs. The good properties, together with the large energy density and fast discharge speed, make this material a promising candidate for pulsed power capacitor.