scholarly journals Nanocomposite multilayer capacitors comprising BaTiO3@TiO2 and poly(vinylidene fluoride-hexafluoropropylene) for dielectric-based energy storage

2014 ◽  
Vol 04 (02) ◽  
pp. 1450009 ◽  
Author(s):  
Mojtaba Rahimabady ◽  
Li Lu ◽  
Kui Yao
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Discharge Rate ◽  
Low Cost ◽  
Breakdown Field ◽  
High Discharge ◽  
High Discharge Rate ◽  
Poly Vinylidene Fluoride ◽  
Multilayer Capacitors

Multilayer dielectric capacitors were fabricated from nanocomposite precursor comprised of BaTiO 3@ TiO 2 core–shell nanosized particles and poly(vinylidene fluoride–hexafluoropropylene) (P(VDF–HFP)) polymer matrix (20 vol%). The multilayer capacitors showed very high discharge speed and high discharged energy density of around 2.5 J/cm3 at its breakdown field (~ 166 MV/m). The energy density of the nanocomposite multilayer capacitors was substantially higher than the energy density of commercially used power capacitors. Low cost, flexible structure, high discharge rate and energy density suggest that the nanocomposite multilayer capacitors are promising for energy storage applications in many power devices and systems.

High-performance capacitors based on NaNbO3 nanowires/poly(vinylidene fluoride) nanocomposites

2018 ◽  
Vol 6 (30) ◽  
pp. 14614-14622 ◽  
Author(s):  
Zhongbin Pan ◽  
Lingmin Yao ◽  
Guanglong Ge ◽  
Bo Shen ◽  
Jiwei Zhai
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Nanocomposite Films ◽  
Discharge Energy ◽  
High Discharge ◽  
Fast Discharge ◽  
Poly Vinylidene Fluoride ◽  
Discharge Energy Density

Nanocomposite films loaded with small NaNbO3 nanowires exhibit a high discharge energy density of 12.26 J cm−3 at 410 MV m−1, superior power density of 2.01 MW cm−3, and ultra-fast discharge speed of 146 ns.

The high energy density and efficiency of PVDF-based composites with double-shell Nd-BaTiO3 particles as fillers

2020 ◽  
Vol 13 (06) ◽  
pp. 2051042
Author(s):  
Zhong Yang ◽  
Jing Wang ◽  
Long He ◽  
Chaoyong Deng ◽  
Kongjun Zhu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
High Energy ◽  
Maximum Energy ◽  
Dielectric Constants ◽  
High Energy Density ◽  
Element Simulation ◽  
Poly Vinylidene Fluoride

Flexible dielectric capacitors are becoming shining stars in modern electronic devices. Ceramic particles with large dielectric constants and benign compatibility are attractive candidates to enhance the energy storage density of pristine polymer capacitors while guaranteeing their flexibility. In this work, double-shell structure of Al2O3 (AO) and dopamine (PDA) were successively coated on the Nd-doped BaTiO3 (NBT) particles and then introduced into the Poly(vinylidene fluoride) (PVDF) matrix. Obvious enhancement in dielectric constants was observed while the dielectric loss remained nearly constant. For the composite films with 1–4[Formula: see text]vol.% NBT@AO@PDA NPs, the maximum energy density of 9.1[Formula: see text]J/cm3 and energy efficiency of 65% was achieved at 430[Formula: see text]MV/m in the sample with 1[Formula: see text]vol.% filling ratio, which are 1.4 and 1.3 times larger than those of pristine PVDF at 450[Formula: see text]MV/m. The finite element simulation reveals the effective relief of the electric field concentration in the composite film induced by the AO and PDA layers. The greater improvement in the energy storage performance could be anticipated if the dispersity of NBT@AO@PDA NPs was further improved.

scholarly journals An alternating multilayer architecture boosts ultrahigh energy density and high discharge efficiency in polymer composites

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5886-5893
Author(s):  
Tao Zhang ◽  
Zhenkang Dan ◽  
Zhonghui Shen ◽  
Jianyong Jiang ◽  
Mengfan Guo ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Composites ◽  
Vinylidene Fluoride ◽  
Dielectric Material ◽  
Ultrahigh Energy ◽  
High Discharge ◽  
Bulk Ceramic ◽  
Poly Vinylidene Fluoride ◽  
Multilayer Architecture ◽  
Discharge Efficiency

Poly(vinylidene fluoride) (PVDF)-based polymers with excellent flexibility and high breakdown strengths are desirable compared to the traditional bulk ceramic in dielectric material applications.

Synergistically ultrahigh energy storage density and efficiency in designed sandwich-structured poly(vinylidene fluoride)-based flexible composite films induced by doping Na0.5Bi0.5TiO3 whiskers

2020 ◽  
Vol 8 (44) ◽  
pp. 23427-23435
Author(s):  
Ying Lin ◽  
Yongjing Zhang ◽  
Shili Zhan ◽  
Chuang Sun ◽  
Guangliang Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Energy Storage Density ◽  
Ultrahigh Energy ◽  
Storage Density ◽  
Poly Vinylidene Fluoride ◽  
Discharged Energy Density

Newly designed sandwich-structured poly(vinylidene fluoride)-based composite films with Na0.5Bi0.5TiO3 whiskers give rise to ultrahigh discharged energy density and efficiency.

Enhanced Permittivity and Energy Density in Neat Poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) Terpolymer Films through Control of Morphology

2014 ◽  
Vol 6 (12) ◽  
pp. 9584-9589 ◽  
Author(s):  
O’Neil L. Smith ◽  
Yunsang Kim ◽  
Mohanalingam Kathaperumal ◽  
Matthew R. Gadinski ◽  
Ming-Jen Pan ◽  
...  
Keyword(s):  
Energy Density ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride

Chaotropic Anion Based “Water-in-Salt” Electrolyte Realizes a High Voltage Zn–Graphite Dual-Ion Battery

2022 ◽  
Author(s):  
Zahid Ali Zafar ◽  
Ghulam Abbas ◽  
Karel Knizek ◽  
Martin Šilhavík ◽  
Prabhat Kumar ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Voltage ◽  
Low Cost ◽  
Environmental Friendliness ◽  
Limited Energy ◽  
Intrinsic Safety

Aqueous Zn-based batteries are promising candidates for grid energy storage due to their low cost, intrinsic safety, and environmental friendliness. Nevertheless, they suffer from limited energy density due to the...

scholarly journals High Discharge Rate Lithium Ion Batteries with the Composite Cathode of LiFePO4/Mesocarbon Nanobead

2010 ◽  
Vol 177 ◽  
pp. 208-210
Author(s):  
Yi Jie Gu ◽  
Cui Song Zeng ◽  
Yu Bo Chen ◽  
Hui Kang Wu ◽  
Hong Quan Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Room Temperature ◽  
Discharge Rate ◽  
Rate Capability ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Rate Performance ◽  
High Discharge ◽  
High Discharge Rate ◽  
Lifepo4 Cathode

Olivine compounds LiFePO4 were prepared by the solid state reaction, and the electrochemical properties were studied with the composite cathode of LiFePO4/mesocarbon nanobead. High discharge rate performance can be achieved with the designed composite cathode of LiFePO4/mesocarbon nanobead. According to the experiment results, batteries with the composite cathode deliver discharge capacity of 1087mAh for 18650 type cell at 20C discharge rate at room temperature. The analysis shows that the uniformity of mesocarbon nanobead around LiFePO4 can supply enough change for electron transporting, which can enhance the rate capability for LiFePO4 cathode lithium ion batteries. It is confirmed that lithium ion batteries with LiFePO4 as cathode are suitable to electric vehicle application.

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