Enhanced dielectric tunability and energy storage properties of plate-like Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites through texture arrangement

Interface design for high energy density polymer nanocomposites

“…2D ceramic fillers have also been introduced into the polymer matrix and proven to be effective in improving the energy density due to their ultrahigh specific surface area and superior mechanical flexibility, such as BNNs, 71,267 (Na 0.5 Bi 0.5 ) 0.93 Ba 0.07 -TiO 3 , 78 NaNbO 3 , 172 TiO 2 , 268 Bi 2 Te 3 , 89,90 and (Ba 0.6 Sr 0.4 )TiO 3 plate-like particles. 269 The high aspect ratio 2D fillers also build up efficient conduction barriers that limit charge migration toward the electrodes and hinder the growth of electric trees during breakdown, resulting in an enhanced breakdown strength. As shown in Fig.…”

Microstructure and dielectric properties of sub‐micron hollow sphere (Ba 0.6 Sr 0.4 )TiO 3 /PVDF composites

“…In previously reported work [9,27,28], a physical theoretical model for the dielectric tunablity of ceramic/polymer composites was established by introducing Yamada dielectric constant model into thermodynamic phenomenological theory, as shown in e.g. 2:…”

“…Zhang et al [3,5] prepared Ba 0.6 Sr 0.4 TiO 3 /PVDF composites with a high dielectric tunability (10.9% under a DC bias of 1.0 kV/mm) and energy density (5.28 J/cm 3 at 146 kV/mm). In our previous work, the dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites was systematically studied through establishing a dielectric tunability theoretical model [5][6][7][8][9]. The effects of ceramic nano-fillers on dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites were investigated, which indicated that the ceramic particle size and shape factor n which is used to describe the geometry of particle played an important role in dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites [5,9].…”

“…In our previous work, the dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites was systematically studied through establishing a dielectric tunability theoretical model [5][6][7][8][9]. The effects of ceramic nano-fillers on dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites were investigated, which indicated that the ceramic particle size and shape factor n which is used to describe the geometry of particle played an important role in dielectric tunability of Ba 0.6 Sr 0.4 TiO 3 /PVDF composites [5,9]. For example, the shape factor n of sub-micron formless Ba 0.6 Sr 0.4 TiO 3 (BST) particles is in the range of 3-4 [7].…”

High energy storage performance for dielectric film capacitors by designing 1D SrTiO3@SiO2 nanofillers

“…into the high E b of the polymer matrix. [18][19][20][21][22][23][24] Of particular, previous research has confirmed that high aspect ratio onedimensional (1D) ceramic nanofillers, such as barium titanate (BT) and lead zirconate titanate (PZT) nanowires, can efficiently enhance the dielectric constant and energy density of polymer nanocomposites when compared to their corresponding spherical particles. [25][26][27][28][29][30][31] This is due to the fact that the ferroelectric ceramic nanowires possess larger dipolar moment, which could enhance D max of these nanocomposites at a lower volume fraction, also benefiting the E b .…”