Enhanced dielectric properties and energy storage density of PVDF nanocomposites by co-loading of BaTiO3 and CoFe2O4 nanoparticles
Dielectric polymer-based nanocomposites with high dielectric constant and energy density have attracted extensive attention in modern electronic and electrical applications. Core-satellite BaTiO3-CoFe2O4 (BT-CF) structures with a BT core of ~ 100 nm and CF satellites (~ 28 nm) on the surface of the BT particle were prepared. The dielectric properties and energy storage density of PVDF nanocomposites were enhanced by BT-CF heterostructures at a small loading of CF nanoparticles. Compared to the general adopted BT/PVDF composites, the dielectric constant can be effectively improved with no additional loss by introducing a small amount of CF nanoparticles to the BT/PVDF composite. Moreover, the energy density and efficiency of the BT/PVDF nanocomposites were also improved by the small loading of CF. The discharged energy density of the BT-CF/PVDF nanocomposites with 7 wt.% CF nanoparticles showed that the maximal energy density value is 5.60 J/cm3 at the electric field of 263 kV/mm. The results showed that the small amount of CF nanoparticles has beneficial effects on enhancing the dielectric constant and energy storage of the BT/PVDF nanocomposites.
KeywordsBaTiO3-CoFe2O4 heterostructures PVDF nanocomposites Enhanced dielectric properties Enhanced energy storage density
This work was supported by the National Natural Science Foundation of China (Grant Nos. 61,774,020, 51,802,023 and 51,802,021), Young Elite Scientists Sponsorship Program by CAST (Grant No. 2018QNRC001), Science and Technology Plan of Shenzhen City (Grant No. JCYJ20180306173235924), State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (No. KF201803), Key area research plan of Guangdong (Grant No. 2019B010937001).
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Conflict of interest
The authors declare that they have no conflict of interest.
- 9.Zhou L, Fu Q, Xue F, Tang X, Zhou D, Tian Y et al (2017) Multiple interfacial Fe3O4@BaTiO3/P(VDF-HFP) core-shell-matrix films with internal barrier layer capacitor (IBLC) effects and high energy storage density. Acs Appl Mater Inter 9:40792–40800 https://doi.org/10.1021/acsami.7b10923 CrossRefGoogle Scholar
- 13.Genchi G, Ceseracciu L, Marino A, Labardi M, Marras S, Pignatelli F et al (2016) P(VDF-TrFE)/BaTiO3 nanoparticle composite films mediate piezoelectric stimulation and promote differentiation of SH-SY5Y neuroblastoma cells. Adv Healthc Mater 5:1808–1820 https://doi.org/10.1002/adhm.201600245 CrossRefGoogle Scholar
- 18.Song Y, Shen Y, Liu H, Lin Y, Li M, Nan C (2012) Improving the dielectric constants and breakdown strength of polymer composites: effects of the shape of the BaTiO3 nanoinclusions, surface modification and polymer matrix. J Mater Chem C 22:16491–16498 https://doi.org/10.1039/c2jm32579a CrossRefGoogle Scholar
- 21.Kim H, Johnson J, Chavez L, Garcia R, Tseng T, Lin Y (2018) Enhanced dielectric properties of three phase dielectric MWCNTs/BaTiO3/PVDF nanocomposites for energy storage using fused deposition modeling 3D printing. Ceram Int 44:9037–9044 https://doi.org/10.1016/j.ceramint.2018.02.107 CrossRefGoogle Scholar
- 27.Liu Z, Zhang J, Tang L, Zhou Y, Lin Y, Wang R, Kong J. Tang Y and Gu J (2019). Improved wave-transparent performances and enhanced mechanical properties for fluoride-containing PBO precursor modified cyanate ester resins and their PBO fibers/cyanate ester composites. Compos. Part B-Eng. 178: 107466 https://doi.org/10.1016/j.compositesb.2019.107466 CrossRefGoogle Scholar
- 28.Yang X, Guo Y, Han Y, Li Y, Ma T, Chen M, Kong J, Zhu J, Gu J (2019) Significant improvement of thermal conductivities for BNNS/PVA composite films via electrospinning followed by hot-pressing technology. Compos Part B-Eng 175:107070 https://doi.org/10.1016/j.compositesb.2019.107070 CrossRefGoogle Scholar
- 29.Tang L, He M, Na X, Guan X, Zhang R, Zhang J, Gu J (2019) Functionalized glass fibers cloth/spherical BN fillers/epoxy laminated composites with excellent thermal conductivities and electrical insulation properties. Composites Communications 16:5–10 https://doi.org/10.1016/j.coco.2019.08.007 CrossRefGoogle Scholar
- 30.Gu J, Lv Z, Wu Y, Guo Y, Tian L, Qiu H, Li W, Zhang Q (2017) Dielectric thermally conductive boron nitride/polyimide composites with outstanding thermal stabilities via in-situ polymerization-electrospinning-hot press method. Compos Part A-Appl S 94:209–216 https://doi.org/10.1016/j.compositesa.2016.12.014 CrossRefGoogle Scholar
- 31.Ameli A, Arjmand M, Pötschke P, Krause B, Sundararaj U (2016) Effects of synthesis catalyst and temperature on broadband dielectric properties of nitrogen-doped carbon nanotube/polyvinylidene fluoride nanocomposites. Carbon 106:260–278 https://doi.org/10.1016/j.carbon.2016.05.034 CrossRefGoogle Scholar