Effect of Macroscopic Crystallization Modification on the Energy Storage Performance of Poly(Vinylidene Fluoride-Hexafluoropropylene)

NANO ◽  
2021 ◽  
pp. 2150125
Author(s):  
Weiye Sun ◽  
Fujia Chen ◽  
Yujiu Zhou ◽  
Yuetao Zhao ◽  
Jianhua xu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Polyvinylidene Fluoride ◽  
Sandwich Structure ◽  
Vinylidene Fluoride ◽  
Single Layer ◽  
Dielectric Materials ◽  
High Energy ◽  
High Energy Density ◽  
Layer By Layer ◽  
Storage Performance

The application prospects of dielectric materials such as polyvinylidene fluoride polymers in the field of energy storage have stimulated extensive research, and the performances are mainly affected by crystallization. However, most of them are focused on the influences of single-layer crystalline rather than macroscopic structures. In this study, a unique sandwich structure is proposed by combining layer-by-layer casting and multi-step thermal processing methods to control the macroscopic crystallization in each layer. Four heating temperatures were first set, and it was found that as the drying temperature increases, the films present different crystallization, which results in different dielectric performances. According to this feature, a sandwich structure was proposed for modification of macroscopic crystallization and the influences on energy storage performance were studied. After macroscopic modification of the crystallization, a low loss [Formula: see text], high energy density (7.12[Formula: see text]J/cc) with the highest charge-discharging efficiency was obtained, which presents the advantages of this methods, and the related mechanisms were discussed.

Poly(vinylidene fluoride) Interleaves for Multifunctional Fiber Reinforced Composites

2012 ◽  
Vol 77 ◽  
pp. 138-145
Author(s):  
Gregory J. Ehlert ◽  
Hai Xiong Tang ◽  
Natalie R. Meeks ◽  
Henry A. Sodano
Keyword(s):  
Energy Storage ◽  
Polyvinylidene Fluoride ◽  
Ad Hoc ◽  
Vinylidene Fluoride ◽  
Breakdown Strength ◽  
High Energy ◽  
High Energy Density ◽  
Future Research ◽  
Carbon Fiber Composites ◽  
Structural Reinforcement

The integration of energy storage into structural multifunctional materials has found use in a wide variety of applications, such as future air and ground vehicles. However, the present realization of these materials cannot be used to increase the structural properties thus limiting its future use in these applications. Here, we developed a novel multifunctional composite material using polyvinylidene fluoride (PVDF) interleaves in carbon fiber composites. The carbon fibers function as both the structural reinforcement as well as the electrodes for the dielectric polymer. It has shown that energy storage functionality can be added into the composites with no reduction in the short beam shear strength. Currently, the breakdown strength is low due to challenges in the processing of the composites and the potential for regions of reduced thickness during pressing. In future research, the manufacturing process of the composites will be investigated to improve the breakdown strength in order to obtain high energy density in addition to preserving the outstanding mechanical properties. This new multifunctional material will open a door to the development of advanced structures that distribute energy storage throughout the composite thus eliminating their current ad hoc implementation.

scholarly journals Research Progress toward Room Temperature Sodium Sulfur Batteries: A Review

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1535
Author(s):  
Yanjie Wang ◽  
Yingjie Zhang ◽  
Hongyu Cheng ◽  
Zhicong Ni ◽  
Ying Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Room Temperature ◽  
High Energy ◽  
Safety Performance ◽  
High Energy Density ◽  
Research Progress ◽  
Storage Performance ◽  
Sulfur Battery ◽  
Sodium Sulfur Battery ◽  
Sodium Sulfur

Lithium metal batteries have achieved large-scale application, but still have limitations such as poor safety performance and high cost, and limited lithium resources limit the production of lithium batteries. The construction of these devices is also hampered by limited lithium supplies. Therefore, it is particularly important to find alternative metals for lithium replacement. Sodium has the properties of rich in content, low cost and ability to provide high voltage, which makes it an ideal substitute for lithium. Sulfur-based materials have attributes of high energy density, high theoretical specific capacity and are easily oxidized. They may be used as cathodes matched with sodium anodes to form a sodium-sulfur battery. Traditional sodium-sulfur batteries are used at a temperature of about 300 °C. In order to solve problems associated with flammability, explosiveness and energy loss caused by high-temperature use conditions, most research is now focused on the development of room temperature sodium-sulfur batteries. Regardless of safety performance or energy storage performance, room temperature sodium-sulfur batteries have great potential as next-generation secondary batteries. This article summarizes the working principle and existing problems for room temperature sodium-sulfur battery, and summarizes the methods necessary to solve key scientific problems to improve the comprehensive energy storage performance of sodium-sulfur battery from four aspects: cathode, anode, electrolyte and separator.

scholarly journals Development on Thermochemical Energy Storage Based on CaO-Based Materials: A Review

2018 ◽  
Vol 10 (8) ◽  
pp. 2660 ◽  
Author(s):  
Yi Yuan ◽  
Yingjie Li ◽  
Jianli Zhao
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Density ◽  
Circulating Fluidized Bed ◽  
High Energy ◽  
High Energy Density ◽  
Hydration Reaction ◽  
Initial Sample ◽  
Storage Performance ◽  
Low Activity

The intermittent and inconsistent nature of some renewable energy, such as solar and wind, means the corresponding plants are unable to operate continuously. Thermochemical energy storage (TES) is an essential way to solve this problem. Due to the advantages of cheap price, high energy density, and ease to scaling, CaO-based material is thought as one of the most promising storage mediums for TES. In this paper, TES based on various cycles, such as CaO/CaCO3 cycles, CaO/Ca(OH)2 cycles, and coupling of CaO/Ca(OH)2 and CaO/CaCO3 cycles, were reviewed. The energy storage performances of CaO-based materials, as well as the modification approaches to improve their performance, were critically reviewed. The natural CaO-based materials for CaO/Ca(OH)2 TES experienced the multiple hydration/dehydration cycles tend to suffer from severe sintering which leads to the low activity and structural stability. It is found that higher dehydration temperature, lower initial sample temperature of the hydration reaction, higher vapor pressure in the hydration reactor, and the use of circulating fluidized bed (CFB) reactors all can improve the energy storage performance of CaO-based materials. In addition, the energy storage performance of CaO-based materials for CaO/Ca(OH)2 TES can be effectively improved by the various modification methods. The additions of Al2O3, Na2Si3O7, and nanoparticles of nano-SiO2 can improve the structural stabilities of CaO-based materials, while the addition of LiOH can improve the reactivities of CaO-based materials. This paper is devoted to a critical review on the development on thermochemical energy storage based on CaO-based materials in the recent years.

Significantly enhanced energy storage performance of flexible composites using sodium bismuth titanate based lead-free fillers

2020 ◽  
Vol 8 (42) ◽  
pp. 14910-14918
Author(s):  
Pingan Yang ◽  
Lili Li ◽  
Hongbin Yuan ◽  
Fei Wen ◽  
Peng Zheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Bismuth Titanate ◽  
High Energy ◽  
High Energy Density ◽  
Lead Free ◽  
Sodium Bismuth Titanate ◽  
Flexible Composites ◽  
Storage Performance

A new lead-free antiferroelectric ceramic NBT–SBT was introduced into PVDF polymer to fabricate composites films, achieving record-high energy density of 15.3 J cm−3 at 500 MV m−1 and meeting the requirement of miniaturization and lightweight device.

Glass–ceramic dielectric materials with high energy density and ultra-fast discharge speed for high power energy storage applications

2019 ◽  
Vol 7 (48) ◽  
pp. 15118-15135 ◽  
Author(s):  
Shaohui Liu ◽  
Bo Shen ◽  
Haoshan Hao ◽  
Jiwei Zhai
Keyword(s):  
Energy Storage ◽  
Glass Ceramic ◽  
Temperature Stability ◽  
Ceramic Materials ◽  
Dielectric Materials ◽  
High Energy ◽  
High Energy Density ◽  
High Temperature Stability ◽  
Environmental Friendliness ◽  
Fast Discharge

Ferroelectric glass–ceramic materials have been widely used as dielectric materials for energy storage capacitors because of their ultrafast discharge speed, excellent high temperature stability, stable frequency, and environmental friendliness.

Energy storage performance of ferroelectric ZrO2 film capacitors: effect of HfO2:Al2O3 dielectric insert layer

2020 ◽  
Vol 8 (28) ◽  
pp. 14171-14177
Author(s):  
J. P. B. Silva ◽  
J. M. B. Silva ◽  
K. C. Sekhar ◽  
H. Palneedi ◽  
M. C. Istrate ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Zro2 Film ◽  
Storage Performance

High energy density of 54.3 J cm−3 with an efficiency of 51.3% was obtained for the ZrO2 film capacitors with 2 nm-thick HAO insert layer.

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.

High-performance quasi-solid-state asymmetric supercapacitors based on BiMn2O5 nanoparticles and redox-additive electrolytes

2019 ◽  
Vol 6 (8) ◽  
pp. 2061-2070 ◽  
Author(s):  
Jai Bhagwan ◽  
Bhimanaboina Ramulu ◽  
Jae Su Yu
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Storage Performance

The investigation of nanomaterials with improved energy storage performance is essential in the development of high energy density supercapacitors.

Materials Research for High Energy Density Electrochemical Capacitor

2008 ◽  
Vol 1100 ◽  
Author(s):  
Andrew F. Burke
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Dielectric Materials ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Capacitive Energy Storage ◽  
High Electronic Conductivity ◽  
Materials Research ◽  
Power Capability

AbstractIn April 2007, the Office of Basic Energy Science, United States Department of Energy organized and conducted a Basic Energy Sciences Workshop for Electrical Energy Storage at which basic research needs for capacitive energy storage were considered in detail. This paper is intended to highlight the materials research findings/needs of the workshop and to relate them to the development of high energy density capacitors that can have an energy density approaching that of lead acid batteries, a power density greater than that of lithium ion batteries, and cycle life approaching that of carbon/carbon double-layer capacitors. Capacitors inherently have long cycle life and high power capability so the key issue is how to increase their energy density with minimum sacrifice of their inherent cycle life and power advantages. This requires the development of electrode charge storage materials with an effective high specific capacitance (F/g) and high electronic conductivity. The most promising electrode materials appear to be optimized activated carbons, graphitic carbons, nanotube carbons, and metal oxides. Cells can be assembled that utilize one of these materials in the one electrode and another of the material in the other electrode. Such hybrid cells can operate at 3-4V using organic electrolytes and potentially can have energy densities of 15-25 Wh/kg. Initial research is also underway on solid-state, high energy density devices utilizing high dielectric materials (K>15000) which would operate at very high cell voltage. If such dielectric materials can be developed, these devices may have energy densities approaching those of lithium batteries.

Sign in / Sign up

Export Citation Format

Share Document