All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films
In this work, we have prepared a novel epoxy film with excellent comprehensive properties by introducing rigid phenyl and flexible etherified methylene
Improved Energy Density and Charge Discharge Efficiency of
The maximum energy storage density goes up from 1.45 to 2.77 J/cm 3 at 85 C. The surface-grafted BOPP film exhibits outstanding energy density and charge-discharge
Significant improvement in high-temperature energy storage
The maximum discharged energy density ( Ue) of the modified BOPP films is 10.10 J cm −3 with a charge–discharge efficiency ( η) > 90% at 30 °C, and it reaches 5.52 J cm −3
Significant Improvement in Dielectric Properties and Energy Density
Abstract: Biaxially oriented polypropylene (BOPP) is a polymer material that has been widely used in the field of film dielectric capacitors, but its low energy storage density limits its further applications. In this paper, we propose a method for functionalizing the molecular structure of the surface layer of the BOPP film to improve the breakdown strength and
Significantly Improved High‐Temperature Energy Storage Performance of BOPP
Specifically, when the aluminum nitride (AlN) acts as a coating layer, the AlN‐BOPP‐AlN sandwich‐structured films possess a discharged energy density of 1.5 J cm−3 with an efficiency of 90% at 125 C, accompanying an outstandingly cyclic property.
Investigation of Crystallinity of BOPP Film by Various
where δ C is density of 100% crystalline BOPP, δ S is density of the sample BOPP, and δ A is density of 100% amorphous BOPP . 2.4 Fourier Transform Infrared (FTIR) Spectroscopy. The basic structure of polymer film can be determined by the IR absorption spectra of a molecule.
Significantly Improved High‐Temperature Energy Storage
discharged energy density and operation temperature are significantly enhanced, indicating that this efficient and facile method provides an important
High energy storage density and efficiency achieved in dielectric
Using BOPP as a typical example, although it can be used at temperatures up to 105 °C, its energy storage properties are actually significantly reduced. For instance, a BOPP film energy storage density of around 0.2 J/cm 3 and a cycling efficiency of 85% is reported in Ref [9] at 100 °C. However, BOPP film is also easily broken down by high
Enhanced breakdown strength and energy storage density
r * 2.2), the discharged energy density of BOPP is only 4.88 J/cm3 at 700 MV/m [14]. The discharged energy density (U e) indicates the energy storage capacity of the dielectric, and in general, the discharge energy density and charge–discharge effi-ciency (g) of a dielectric material are calculated as follows [15]. U e ¼ Z D m D r EdD
All-organic sandwich-structured BOPP/PVDF/BOPP
At 200 kV mm –1 and 110 °C, a working condition for the application of the electric vehicle, the prepared film still showed an energy storage density of 1.5 J cm –3 and charge-discharge efficiency of 86%, which is 3 times that of BOPP film. This work provides an idea for material designs of high-performance polymer film capacitors.
Enhanced breakdown strength and energy storage density of
Polymer-based flexible dielectrics have been widely used in capacitor energy storage due to their advantages of ultrahigh power density, flexibility, and scalability. To develop the polymer dielectric films with high-energy storage density has been a hot topic in the domain of dielectric energy storage. In this study, both of electric
Improved Working Temperature and Capacitive Energy
High-temperature dielectric energy-storage properties are crucial for polymer-based capacitors for harsh environment applications. However, biaxially oriented polypropylene (BOPP), a state-of-the-a
Polymers | Free Full-Text | Improved Energy Storage Performance
Adjusting the BOPP volume content to 67% resulted in a discharge energy density of 10.1 J/cm3 and an energy storage efficiency of 80.9%. The results of this study have established the mechanism for a composite structure regulation of macroscopic energy storage performance.
All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films
Fig. 8 (d) shows the energy density and charge–discharge efficiency of BOPP and all sandwich-structured composite films, we can clearly see that PC2-N
Improved high‐temperature energy storage density at
(BOPP ~0.50 and 0.48 J/cm ³ @200 kV/mm). This work provides an efficient way to improve the high‐temperature energy storage density of BOPP films by constructing all‐organic multilayer structure.
Overviews of dielectric energy storage materials and methods
Due to high power density, fast charge/discharge speed, and high reliability, dielectric capacitors are widely used in pulsed power systems and power electronic systems. However, compared with other energy storage devices such as batteries and supercapacitors, the energy storage density of dielectric capacitors is low, which
Dielectric Strength Structure-Activity Relationship of BOPP Film for High Energy Density
polymer with an energy storage density of up to 10 MJ/m3 in the laboratory. In addition, although the ceramic or ultrathin glass studied in [13] and [14] has an attractive energy storage density, they have not been reported to
Significantly Improved High‐Temperature Energy Storage Performance of BOPP
discharged energy storage density of BOPP/PVDF multilayer films increases to 1.02 and 0.99 J/cm ³ at 100 and 125 C. (BOPP ~0.50 and 0.48 J/cm ³ @200 kV/mm). This work provides an efficient way
Biaxially oriented films of grafted-polypropylene with giant energy
Consequently, the maximum discharged energy density above 90% efficiency of the grafted polypropylene (4.5 J cm −3) is significantly enhanced with respect to commercial BOPP (0.1 J cm −3). The approach reported in this work provides the possibility for large-scale production of capacitor films with high energy storage density under
Dielectric Strength Structure-Activity Relationship of BOPP Film for High Energy Density
Biaxially oriented polypropylene (BOPP) films are currently an indispensable material for pulse capacitor production. Research on the structure-activity relationship of BOPP films is an important way to optimize its manufacturing process and achieve high energy density. In this article, the influences of three key structural
Largely enhanced energy density of BOPP–OBT@CPP–BOPP
The experimental results showed that the highest energy density of BOPP–OBT@CPP–BOPP was up to 7.17 J cm −3 at 450 MV m −1 with 40 wt% OBT in
Ultrahigh energy storage density at low operating field strength
A maximum ε r of 4.2 and a maximum E b of 470 MV/m are achieved in PVA/BT coated BOPP films, enabling a high energy density of 2.90 J cm −3 at 400 MV/m, which is at the advanced level of the reported BOPP-based films.
All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density
Fig. 8 (d) shows the energy density and charge–discharge efficiency of BOPP and all sandwich-structured composite films, we can clearly see that PC2-N exhibited the best energy storage performance with an energy density of 5.70 J/cm 3 and a charge
Significantly Improved High‐Temperature Energy Storage
(BOPP ~0.50 and 0.48 J/cm ³ @200 kV/mm). This work provides an efficient way to improve the high‐temperature energy storage density of BOPP films by constructing all‐organic multilayer structure.
Enhanced breakdown strength and energy storage density of
Enhanced breakdown strength and energy storage density of PMMA/PVDF blends by coating superficial layers and doping organic fillers Changhai Zhang1,2, Hairui Wang1,2, Zeyang Liu1,2, Tiandong Zhang1,2,*, Chao Tang1,2, Xianli Liu3,*, and Qingguo Chi1,2 1Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education,,
All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density
The energy storage density of BN-1 is 5.52 J/cm3 under 500 MV/m electric field at 100, which is 15.10% higher than that of For instance, the discharge energy density of HBP BOPP HBP (1‐20
Significantly improved high-temperature energy storage performance of commercial BOPP
The modified BOPP−AA films display a discharged energy density of 1.32 J/cm 3 with an efficiency of >90% at 370 kV/mm and 125 C, which is 474% higher than that of the pristine BOPP films.
All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density
At 200 kV mm –1 and 110 C, a working condition for the application of the electric vehicle, the prepared film still showed an energy storage density of 1.5 J cm –3 and charge-discharge efficiency of 86%, which is 3 times that of BOPP film.
All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density
Biaxially orientated polypropylene (BOPP) is widely used in film capacitors for its easy process, high breakdown strength and competitive cost. However, it is still a real challenge to further improve its energy storage density. Herein, we combined BOPP with polyvinylidene fluoride (PVDF), which has the best electroactive properties among
Sandwich-structured polymer nanocomposites with high energy density
This energy density is 270% that of BOPP discharged at 70 C, and 310% that of BOPP released at 105 C (i.e., the maximum operating temperature of BOPP; Fig. 4B). Particularly, U e as well as the discharge time of SSN-25 is found to remain constant in the temperature range of 25–150 °C.
Energy Storage Performance and Dielectric Properties of Surface Fluorinated BOPP
Furthermore, low‐temperature annealing is performed to suppress the polarization loss, and an energy storage density of 17.27 J/cm ³ accompanying a high efficiency of 75.53% is obtained at 3100
Enhancement of Energy Density in the BOPP-Based Sandwich
DOI: 10.1021/acsaelm.3c00848 Corpus ID: 263001915 Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO3@Polyaniline Hybrid Dielectric Fillers: Polymer composites fi
Largely enhanced energy density of BOPP–OBT@CPP–BOPP
For instance, the discharge energy density of HBP BOPP HBP (1‐20‐1) film is up to 2.38 J/cm3 at an applied electric field of 400 kV/mm, which increases about 36% over that of pure BOPP (i.e
Largely improved dielectric energy performances and safety of
The maximum energy storage density of PVA/BT@BOPP is as high as 2.90 J cm −3 at the highest electrical field of 400 MV/m, which is over 1.8 times of the
Effect of electrode materials on dielectric properties of BOPP films
Figure 7(b) shows the discharge energy density and energy storage efficiency of the BOPP films with different electrodes versus the applied electric field at 125 °C. The discharging efficiency of Pt/BOPP/Pt films is higher than that of Cu/BOPP/Cu and Al/BOPP/Al films after the electric field exceeds 220 kV/mm, and the discharging
High energy storage density and efficiency achieved in dielectric
For instance, a BOPP film energy storage density of around 0.2 J/cm 3 and a cycling efficiency of 85% is reported in Ref [9] at 100 C. However, BOPP film is also easily broken down by high heat during charge–discharge cycling at certain temperatures.
High energy density and superior charge/discharge efficiency
However, a limited discharged energy density (U e) of BOPP is mainly attributed to its low permittivity (2.2), hampering its wide applications in advanced power electronics [[13], [14], [15]]. For next-generation energy storage capacitors, polymer dielectrics with high U e and charge/discharge efficiency ( η ) are thus highly desirable.
Significant Improvement in Dielectric Properties and Energy
Abstract: Biaxially oriented polypropylene (BOPP) is a polymer material that has been widely used in the field of film dielectric capacitors, but its low energy storage
سابق：transnistria power grid energy storage technology
التالي：abandoned energy storage power station
