Van der Waals Epitaxy Enables Rollable Dielectric Superlattice for Record High Overall Energy Density

Zhong, Gaokuo1,2; Chen, Qianxin1,3; Zhang, Yuan1,2,4; Qu, Ke5; Yang, Zhenzhong5; Wang, Jinbin3; Zhong, Xiangli3; Ma, Ming1; Ren, Chuanlai1; Li, Jiangyu2,4

2023-02-01

10.1002/adfm.202213752

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

Nanoengineered polar oxide films have attracted much attention for electric energy storage thanks to their high energy density, though they are all deposited on thick and rigid substrates, resulting in inferior overall energy density and poor manufacturability. Herein, an alternative strategy is developed for oxide dielectrics utilizing van der Waals epitaxy on ultrathin and flexible mica substrate, with a dielectric superlattice of Pb0.92La0.08(Zr0.95Ti0.05)O-3-SrTiO3 carefully engineered to break its long-range antiferroelectric polar order. An ultrathin flexible capacitor is obtained as a result, with a record high overall energy density of 12.19 J cm(-3) and an efficiency of 90.98%, and there is much room for further improvement since mica substrate can approach 2D limit. The superlattice can be easily rolled for large-scale manufacturing, and the energy storage performances are well maintained under large bending deformation as well as extended bending cycling. The study thus establishes a viable route for dielectric oxide films, paving way for their practical applications in high-energy density capacitors.

energy storages ferroelectrics mica superlattices van der Waals epitaxy

SCI

English

NI Journal Papers

Corresponding

National Natural Science Foundation of China["51902337","92066102","92066203"] ; Shenzhen Science and Technology Program["KQTD20170810160424889","RCYX20200714114733204","JCYJ20200109115219 157"] ; Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province[2021B1212040001] ; Guangdong Provincial Department of Education Innovation Team Program[2021KCXTD012] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515110689] ; China Postdoctoral Science Foundation[2021M693281]

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

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

WOS:000932642100001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China
3.Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
5.East China Normal Univ, Key Lab Polar Mat & Devices, Shanghai 200241, Peoples R China

Zhong, Gaokuo,Chen, Qianxin,Zhang, Yuan,et al. Van der Waals Epitaxy Enables Rollable Dielectric Superlattice for Record High Overall Energy Density[J]. ADVANCED FUNCTIONAL MATERIALS,2023.

Zhong, Gaokuo.,Chen, Qianxin.,Zhang, Yuan.,Qu, Ke.,Yang, Zhenzhong.,...&Li, Jiangyu.(2023).Van der Waals Epitaxy Enables Rollable Dielectric Superlattice for Record High Overall Energy Density.ADVANCED FUNCTIONAL MATERIALS.

Zhong, Gaokuo,et al."Van der Waals Epitaxy Enables Rollable Dielectric Superlattice for Record High Overall Energy Density".ADVANCED FUNCTIONAL MATERIALS (2023).