Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer

Chang, Zelong1; Shi, Zhicheng1; Liu, Yao2; Lei, Li1; Sun, Liang3; Tang, Qingyang1; Fan, Runhua4; Cui, Hongzhi1; Wang, Hong3

2024-09-01

10.1002/smll.202407299

SMALL   影响因子和分区

1613-6810

1613-6829

["Polymer dielectrics are the key materials for pulsed energy storage systems, but their low energy densities greatly restrict the applications in integrated electronic devices. Herein, a unique bumpy granular interlayer consisting of gold nanoparticles (Au NPs) and polymethyksesquioxane (PMSQ) microspheres is introduced into a poly(vinylidene fluoride) (PVDF) film, forming trilayered PVDF-Au/PMSQ-PVDF films. Interestingly, the Au/PMSQ interlayer arouses a dielectric enhancement of 47% and an ultrahigh breakdown strength of 704 MV m-1, which reaches 153% of pure PVDF. It is revealed that the greatly enhanced breakdown strength originated from the Coulomb-blockade effect of Au NPs and the excellent insulating properties of PMSQ microspheres with a special molecular-scale organic-inorganic hybrid structure. Benefiting from the concurrently enhanced dielectric and breakdown performances, an outstanding energy density of 22.42 J cm-3 with an efficiency of 67.1%, which reaches 249% of that of the pure PVDF, is achieved. It is further confirmed that this design strategy is also applicable to linear dielectric polymer polyethyleneimine. The composites exhibit an energy density of 8.91 J cm-3 with a high efficiency of approximate to 95%. This work offers a novel and efficient strategy for concurrently enhancing the dielectric and breakdown performances of polymers toward pulsed power applications.","A unique design of trilayered polymer film with a bumpy granular interlayer consisting of gold nanoparticles and PMSQ microspheres is proposed. Benefiting from the micro-capacitance effect and the multiple charge-blocking effects of the interlayer, remarkable dielectric and breakdown enhancements are achieved, yielding excellent capacitive energy storage performances. image"]

breakdown strength coulomb blockade energy storage nanocomposites polymer dielectrics

SCI

英语

其他

Natural Science Foundation of Shandong Province[tsqn202306090] ; Project of Taishan Scholars[202241004] ; Fundamental Research Funds for Central Universities[ZR2021YQ39]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001314485800001

WILEY-V C H VERLAG GMBH

Web of Science

1.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
2.Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Shanghai Maritime Univ, Coll Ocean Sci & Engn, Shanghai 201306, Peoples R China

Chang, Zelong,Shi, Zhicheng,Liu, Yao,et al. Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer[J]. SMALL,2024.

Chang, Zelong.,Shi, Zhicheng.,Liu, Yao.,Lei, Li.,Sun, Liang.,...&Wang, Hong.(2024).Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer.SMALL.

Chang, Zelong,et al."Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer".SMALL (2024).