High Energy Density Polymer Dielectrics Interlayered by Assembled Boron Nitride Nanosheets

Zhu, Yingke; Zhu, Yujie; Huang, Xingyi; Jin, Chen; Qi, Li; He, Jinliang; Jiang, Pingkai

doi:10.1002/aenm.201903062

Cited by 92 publications

(54 citation statements)

References 39 publications

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“…On the contrary, during the growth of electric tree branches, the BNNSs interlayer acts as a barrier or scattering interface in sandwich-structured lm. 27 The breakdown eld strength of PBP/BT@DPA is 414.76 kV mm À1 , which is not much different from P(VDF-HFP). The shape factor b of the lms doped with BNNSs is higher than other samples, in particular, the shape factor b of PBP/BT@DPA is 1.82 times that of pure P(VDF-HFP).…”

Section: Breakdown Characteristics Of Several Lmsmentioning

confidence: 87%

“…As reported in the literature, BNNSs were prepared by ultrasonic degradation method with a yield of 2.5-3%. 27,29 The experimentally collected BNNSs were 60 mg, and the acquisition rate was within the normal range. The experimental results preliminary indicated that h-BN was stripped successfully.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, Huang et al used the structural design of BNNSs insulation layer to improve the breakdown eld strength and reduce the loss. 27 This structure has been proven very reliable for increasing energy storage density. In order to improve the energy storage characteristics of materials, BaTiO 3 nanoparticles were chosen as the ceramic ller to increase the dielectric constant of the matrix.…”

Section: Introductionmentioning

confidence: 99%

“…In order to improve the energy storage characteristics of materials, BaTiO 3 nanoparticles were chosen as the ceramic ller to increase the dielectric constant of the matrix. At the same time, considering that BaTiO 3 will cause a decrease in breakdown eld strength, inspired by their work, 27 BNNSs were chosen as the third phase ller and designed as a separate mezzanine. While using the inorganic ceramic particles to increase the dielectric constant, the effect of suppressing the reduction of breakdown eld strength is achieved by adding BNNSs.…”

Section: Introductionmentioning

confidence: 99%

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Sandwich-structured poly(vinylidene fluoride-hexafluoropropylene) composite film containing a boron nitride nanosheet interlayer

et al. 2020

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Section: Breakdown Characteristics Of Several Lmsmentioning

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sandwich-structured poly(vinylidene fluoride-hexafluoropropylene) composite film containing a boron nitride nanosheet interlayer

et al. 2020

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“…In this context, the subsurface interstitial hydrogen atoms provide a new way for fine-tuning the chemical reactivity of Pd surface, in particular for catalytic reactions during which Pd binds with the reaction intermediates too strongly (such as the oxygen reduction reaction and carbon dioxide reduction). [15] In conclusion, we have imaged the interstitial hydrogen atoms at the near surface region of octahedral PdH x NPs by using the newly developed dDPC and iDPC STEM techniques. The absorbed hydrogen occupies the T-site interstices at the near surface, while the occupation gradually changes to the O-site in the bulk.…”

mentioning

confidence: 97%

Atomic Imaging of Subsurface Interstitial Hydrogen and Insights into Surface Reactivity of Palladium Hydrides

Lin

Xie

et al. 2020

Angewandte Chemie

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Resolving interstitial hydrogen atoms at the surfaces and interfaces is crucial for understanding the mechanical and physicochemical properties of metal hydrides. Although palladium (Pd) hydrides hold important applications in hydrogen storage and electrocatalysis, the atomic position of interstitial hydrogen at Pd hydride near surfaces still remains undetermined. We report the first direct imaging of subsurface hydrogen atoms absorbed in Pd nanoparticles by using differentiated and integrated differential phase contrast within an aberration-corrected scanning transmission electron microscope. In contrast to the well-established octahedral interstitial sites for hydrogen in the bulk, subsurface hydrogen atoms are directly identified to occupy the tetrahedral interstices. DFT calculations show that the amount and the occupation type of subsurface hydrogen atoms play an indispensable role in finetuning the electronic structure and associated chemical reactivity of the Pd surface.

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Enabling High‐Energy‐Density High‐Efficiency Ferroelectric Polymer Nanocomposites with Rationally Designed Nanofillers

Yang

Zhou

et al. 2020

Adv Funct Materials

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Ferroelectric polymers have been regarded as the preferred matrix for high‐energy‐density dielectric polymer nanocomposites because of their highest dielectric constants among the known polymers. Despite a library of ferroelectric polymer‐based composites having been demonstrated as highly efficient in enhancing the energy density, the charge–discharge efficiency remains moderate because of the high intrinsic loss of ferroelectric polymers. Herein, a systematic study of the oxide nanofillers is presented with varied dielectric constants and the vital role of the dielectric match between the filler and the polymer matrix on the capacitive performance of the ferroelectric polymer composites is revealed. A combined experimental and simulation study is further performed to specifically investigate the effect of the nanofiller morphology on the electrica properties of the polymer nanocomposites. The solution‐processed ferroelectric polymer nanocomposite embedded with Al2O3 nanoplates exhibits markedly improved breakdown strength and discharged energy density along with an exceptional charge–discharge efficiency of 83.4% at 700 MV m−1, which outperforms the ferroelectric polymers and nanocomposites reported to date. This work establishes a facile approach to high‐performance ferroelectric polymer composites through capitalizing on the synergistic effect of the dielectric properties and morphology of the oxide fillers.

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High Energy Density Polymer Dielectrics Interlayered by Assembled Boron Nitride Nanosheets

Cited by 92 publications

References 39 publications

Sandwich-structured poly(vinylidene fluoride-hexafluoropropylene) composite film containing a boron nitride nanosheet interlayer

Sandwich-structured poly(vinylidene fluoride-hexafluoropropylene) composite film containing a boron nitride nanosheet interlayer

Atomic Imaging of Subsurface Interstitial Hydrogen and Insights into Surface Reactivity of Palladium Hydrides

Enabling High‐Energy‐Density High‐Efficiency Ferroelectric Polymer Nanocomposites with Rationally Designed Nanofillers

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