Temperature influence on dielectric energy storage of nanocomposites

Rajib,; Shuvo, Mohammad Arif Ishtiaque; Karim, Hasanul; Delfin, Diego; Afrin, Samia; Lin, Yirong

doi:10.1016/j.ceramint.2014.09.127

Cited by 35 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…CNTs are considered to be potential candidates for the formation of nanocomposites, which can improve their electrical, thermal, and mechanical properties [51]. Although extensive studies have reported the dielectric properties of the nanocomposites, very few investigate the dielectric properties vs. temperature [52]. These properties must be thoroughly investigated under mechanical and dielectric thermal stability for practical device applications.…”

Section: Future Trendsmentioning

confidence: 99%

High-k Polymer Nanocomposites for Energy Storage Applications

Mahmood¹,

Akhtar²,

Mahmood³

2017

Properties and Applications of Polymer Dielectrics

View full text Add to dashboard Cite

High dielectric (high-k) polymer nanocomposites that can electrostatically store energy are widely used in electronics and electric power systems due to their high breakdown strengths (E b ), durability, and ability to configure in various shapes. However, these nanocomposites suffer from a limited working temperature regime, thus limiting their extreme applications, such as hybrid and electric vehicles, aerospace power electronics, and deep ground fuel exploration. Furthermore, the E b and the electric displacement (D) of polymer nanocomposites must be simultaneously enhanced for high-density capacitor applications, which prove to be difficult to modify concurrently. This chapter thoroughly reviews (investigates) the recent developments in the high-k polymer nanocomposites synthesis, characterization, and energy storage applications. Consequently, the aim of this chapter is to provide an overview of the novel developmental strategies in order to develop high-dielectric nanocomposites perovskite ceramics that can be incorporated in high-energy-density (HED) applications.

show abstract

Section: Future Trendsmentioning

confidence: 99%

High-k Polymer Nanocomposites for Energy Storage Applications

Mahmood¹,

Akhtar²,

Mahmood³

2017

Properties and Applications of Polymer Dielectrics

View full text Add to dashboard Cite

show abstract

“…The energy density of dielectric capacitors is typically much lower than high specific energy electrochemical super capacitors, which is limiting their usage in device applications. [20][21][22] One realistic problem with ceramic capacitors is their low breakdown strength (BDS) and that the nonlinear permittivity rapidly drops with an increase in the electric field, which is detrimental to applications. There is an increasing demand to improve the energy density of dielectric capacitors for satisfying next generation material systems.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure, dielectric, ferroelectric and energy storage properties of La-doped BaTiO3 semiconducting ceramics

Puli

Adireddy

et al. 2015

J. Adv. Dielect.

View full text Add to dashboard Cite

Polycrystalline La-doped BaTiO 3 (Ba ð1ÀxÞ La x TiO 3 ) [x ¼ 0; 0:0005; 0:001; 0:003] ceramics (denoted as BTO,BLT1,BLT2,BLT3) were synthesized by conventional solid-state reaction method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. XRD and Raman spectra revealed single-phase tetragonal perovskite crystalline structure. Well-saturated polarization-electric field (P-E) hysteresis loops were observed with the measurement frequency of 50 Hz at room temperature and confirmed ferroelectric nature of these ceramics and a high recoverable electrical energy storage density of 0.350 J/cm 3 with energy efficiency ðnÞ $ 9%, which is useful in energy storage capacitor applications. Dielectric studies revealed anomalies around 415-420 K and near the Curie temperature. The latter is attributed to the ferroelectric to paraelectric phase transition. Better dielectric performances were obtained for La-doped samples sintered at 1350 C for 4 h. Grain growth is inhibited with lanthanum (La) incorporation into the BTO lattice. Room temperature semiconducting behavior with positive temperature coefficient of resistivity (PTCR) behavior at T C is attributed to electron compensation mechanism.

show abstract

“…These values represent an increase compared to other nanocomposites systems . For instance, reported values of BaTiO

_{3}

/PVDF systems do not exceed 5.79 J/cm

^{3}

, surface modified BaTiO

_{3}

/PVDF 10% volume fraction at 1 kHz and room temperature reached 8 J/cm

^{3}

, and nanocomposites of BaTiO

_{3}

nanowires/PVDF 17.5% volume fraction reached 10.48 J/cm

^{3}

. Additionally, at 1 kHz, the energy density is 702.5% greater than energy density of BOPP, a commonly used polymeric material for commercial dielectric capacitors .…”

Section: Resultsmentioning

confidence: 88%

Enhanced Energy Storage of Dielectric Nanocomposites at Elevated Temperatures

Rajib

Martı́nez

Shuvo

et al. 2015

Int J Applied Ceramic Tech

Self Cite

View full text Add to dashboard Cite

Enhancing the performance of dielectric capacitors toward higher energy density and higher operating temperatures has been drawing increased interest. Therefore, in this investigation, research efforts were dedicated to the fabrication and characterization of nanocomposites in order to enhance the energy density at both room temperature and elevated temperature. The dielectric capacitors are fabricated using nanocomposites composed of BaTiO3 nanoparticles with polyimide (PI) matrix aiming at combining the high relative dielectric permittivity of the ceramic filler and the high breakdown strength of the polymeric matrix. Dielectric energy storage performance is assessed for nanocomposites with volume fractions ranging from 0 to 20% under operating frequency from 20 Hz to 1 MHz and temperatures ranging from 20 to 120∘C. It is observed that with the increase of temperature, the capacitance increased while the energy density slightly decreased but significantly higher than pure polymer samples. The highest energy density was found for BaTiO3/PI nanocomposites with 20% volume fraction, 9.63 J/cm3 at 20∘C and 6.79 J/cm3 at 120∘C. Overall, testing results indicate that using nanocomposites of BaTiO3/PI as a dielectric component shows promise for implementation to preserve high energy density values up to temperatures of 120∘C.

show abstract

Temperature influence on dielectric energy storage of nanocomposites

Cited by 35 publications

References 23 publications

High-k Polymer Nanocomposites for Energy Storage Applications

High-k Polymer Nanocomposites for Energy Storage Applications

Crystal structure, dielectric, ferroelectric and energy storage properties of La-doped BaTiO3 semiconducting ceramics

Enhanced Energy Storage of Dielectric Nanocomposites at Elevated Temperatures

Contact Info

Product

Resources

About