Concurrently Achieving High Discharged Energy Density and Efficiency in Composites by Introducing Ultralow Loadings of Core-Shell Structured Graphene@TiO2 Nanoboxes

Sun, Liang1,2,3,4; Shi, Zhicheng1; Liang, Liang1; Dong, Jiufeng2,3,4; Pan, Zizhao2,3,4; Wang, Huanlei1; Gao, Zhe5; Qin, Yong5; Fan, Runhua6; Wang, Hong2,3,4

2022-06-01

10.1021/acsami.2c07229

ACS Applied Materials & Interfaces   Impact Factor & Quartile

1944-8244

1944-8252

Polymer dielectrics have drawn tremendous attention worldwide due to their huge potential for pulsed power capacitors. Recent studies have demonstrated that linear/nonlinear layered composites, which can effectively balance energy density and efficiency, have huge potential for capacitive energy storage applications. However, further enhanced energy densities are strongly desired to meet the everincreasing demand for the miniaturization of electronic devices. Herein, a novel class of core-shell structured graphene@titanium dioxide nanoboxes is successfully synthesized and introduced into poly(vinylidene fluoride-hexafluoropropylene)-poly(ether imide) double-layer films. It is exciting to find that the introduction of merely 0.5 wt% nanoboxes results in a substantially enhanced energy density of 19.39 J/cm(3), which is over 2.6 times that of the film without nanoboxes (7.44 J/cm(3)). Meanwhile, a high breakdown strength of 655 kV/mm and a high efficiency of 83% are achieved. Furthermore, the nanocomposites also show excellent power densities and cycling stabilities. These composites with excellent comprehensive energy storage performances have huge potential for advanced pulsed power capacitors.

nanocomposites energy density discharge efficiency dielectric capacitor core-shell structure

SCI ; EI

English

Corresponding

Fundamental Research Funds for the Central Universities[202241004] ; Shandong Natural Science Foundation for Outstanding Young Scholars[ZR2021YQ39] ; National Natural Science Foundation of China[51773187,92066208]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000820660400001

AMER CHEMICAL SOC

20223012400099

Dielectric devices ; Energy storage ; Fluorine compounds ; Graphene ; High-k dielectric ; Nanocomposites ; Shells (structures)

Structural Members and Shapes:408.2 ; Energy Storage:525.7 ; Dielectric Materials:708.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Solid State Physics:933

Web of Science

1.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr Novel Elect Informat Mat, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China
5.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
6.Shanghai Maritime Univ, Inst Marine Mat Sci & Engn, Shanghai 201306, Peoples R China

Sun, Liang,Shi, Zhicheng,Liang, Liang,et al. Concurrently Achieving High Discharged Energy Density and Efficiency in Composites by Introducing Ultralow Loadings of Core-Shell Structured Graphene@TiO2 Nanoboxes[J]. ACS Applied Materials & Interfaces,2022,14:29292-29301.

Sun, Liang.,Shi, Zhicheng.,Liang, Liang.,Dong, Jiufeng.,Pan, Zizhao.,...&Wang, Hong.(2022).Concurrently Achieving High Discharged Energy Density and Efficiency in Composites by Introducing Ultralow Loadings of Core-Shell Structured Graphene@TiO2 Nanoboxes.ACS Applied Materials & Interfaces,14,29292-29301.

Sun, Liang,et al."Concurrently Achieving High Discharged Energy Density and Efficiency in Composites by Introducing Ultralow Loadings of Core-Shell Structured Graphene@TiO2 Nanoboxes".ACS Applied Materials & Interfaces 14(2022):29292-29301.