Significantly enhanced electrostatic energy storage performance of P(VDF-HFP)/BaTiO3-Bi(Li0.5Nb0.5)O3 nanocomposites

Wang, Peng-Jian; Zhou, Di; Li, Jing; Pang, Li‐Xia; Liu, Wenfeng; Su, Jinzhan; Singh, Charanjeet; Trukhanov, S. V.

doi:10.1016/j.nanoen.2020.105247

Cited by 159 publications

(71 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, these energy usually have very high power densities and cannot be efficiently collected using conventional energy storage devices, (e.g., batteries and electrochemical supercapacitors). [ 1 ] Up to now, one of the most promising candidates for the storage and conversion of pulsed energy is polymer‐based dielectric capacitors that have ultrafast charge/discharge rate, ultrahigh power densities, durable cycle lifetime, and excellent cycling stabilities. [ 2,3 ] Despite these advantages, the discharge energy densities ( U d ) of dielectric capacitors are much lower than supercapacitors and lithium‐ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Liang

Shi

Tan

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

Dielectric film capacitors have aroused considerable attention on account of the fast development of pulsed power systems. However, enhanced energy density is always acquired at the cost of deteriorated charge/discharge efficiency. Herein, well balanced energy density and efficiency are achieved in a series of reasonably designed bilayer composites consisting of a ferroelectric layer and a paraelectric layer at the meantime. It is interesting to find that, when merely 1.6 wt% Zr(HPO4)2 nanosheets are introduced into the ferroelectric layer, a substantially improved energy density of 11.22 J cm−3, which is about 165% that of the bilayer composite without Zr(HPO4)2 nanosheets, is achieved at 650 kV mm−1. Meanwhile, a high charge/discharge efficiency of 89.8% and a low loss tangent of 0.024@10 kHz which is much lower than the pristine ferroelectric polymer layer (0.058@10 kHz) is maintained. Furthermore, finite element simulation reveals that the electric breakdown paths will develop along the macroscopical‐interfaces between adjoining layers and the microcosmic‐interfaces between the Zr(HPO4)2 nanosheets and polymer matrix, which can effectively increase the length of breakdown paths and contribute to improved breakdown strength. This work demonstrates that the Zr(HPO4)2 nanosheets can be promising fillers for other high‐performance dielectric composites.

show abstract

Section: Introductionmentioning

confidence: 99%

Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Liang

Shi

Tan

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…[ 14,55–59 ] Compared with other kinds of composites, the properties are still in the upper level. [ 22,24,27,39,47,53,60–63 ] In addition, U and η of multilayered BTO/PVDF composites under different applied electric fields are calculated and shown in Figure S9 (Supporting Information), demonstrating a changeable rule of energy storage properties.…”

Section: Resultsmentioning

confidence: 99%

2–2 Type PVDF‐Based Composites Interlayered by Epitaxial (111)‐Oriented BTO Films for High Energy Storage Density

Tian

Peng

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Quick charge/discharge polymer‐based composites filled with inorganic nanosheets have attracted extensive attention and provided a more efficient way to achieve high energy storage density (U) because of the alleviated agglomeration of fillers and the formation of conduction barriers. However, conductive paths have a chance to extend along out‐of‐plane directions by circumventing the micrometer‐sized nanosheets. Here, large‐sized (111)‐oriented BaTiO3 (BTO) films with outstanding epitaxiality and ferroelectricity are embedded in poly(vinylidene fluoride) (PVDF) using optimal transfer and hot‐pressing processes. The 2D–2D (2–2) type BTO/PVDF composites interlayered by 2‐layer BTO (about 0.2 µm thick of each layer) exhibit the highest U of 20.7 J cm‐3 at 690 MV m‐1, which is 222.6% that of pure PVDF. Phase‐field simulations reveal that high‐resistance PVDF films as outer layers can prevent the charges injection from electrodes and high‐dielectric BTO films as inner layers can effectively suppress the mobile charges across interfaces between layers, leading to a remarkable improvement of breakdown strength. This work puts forward a scalable approach to enhance the U of inorganic/organic composites for advanced energy storage materials and applications.

show abstract

“…For comparison, the U d and η of previously reported representative monolayer composites are summarized in Figure . ,,,,− In brief, the red part presents high energy density, while the blue part presents high efficiency. Hence, the optimal energy storage properties of composites ought to be presented in the direction of the green arrow.…”

Section: Resultsmentioning

confidence: 99%

Ultra-Fine Gold Nanoparticles Enabled Au-BST NF/PVTC Composites to Have Excellent Energy Storage Performance

Xiong

Zhang

Yang

2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Composites composed of a polymer matrix and inorganic fillers have attracted tremendous attention owing to their promising application in flexible dielectric film capacitors. However, boosting the energy density while ensuring a high charging-discharging efficiency is still a huge challenge. In this work, Ba0.6Sr0.4TiO3 nanofibers (BST NFs) doped with different contents of ultra-fine Au nanoparticles are precisely prepared by one-step electrospinning, and P(VDF-TrFE-CFE) (PVTC)-based composites incorporated with various nanofibers are further prepared via a solution-casting process. A superior discharged energy density of 14.2 J/cm3 and an excellent energy storage efficiency of 71.3% have been achieved in such monolayer composites by optimizing the doping content and distribution of ultra-fine Au nanoparticles in BST NFs, which are induced by enhanced electric displacement and ensure suppressed energy loss and improved electric breakdown strength. Hence, doping moderate ultra-fine metal nanoparticles in one-dimensional inorganic nanofillers is a feasible strategy for designing polymer-based composites with outstanding performance.

show abstract

Significantly enhanced electrostatic energy storage performance of P(VDF-HFP)/BaTiO3-Bi(Li0.5Nb0.5)O3 nanocomposites

Cited by 159 publications

References 50 publications

Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

2–2 Type PVDF‐Based Composites Interlayered by Epitaxial (111)‐Oriented BTO Films for High Energy Storage Density

Ultra-Fine Gold Nanoparticles Enabled Au-BST NF/PVTC Composites to Have Excellent Energy Storage Performance

Contact Info

Product

Resources

About