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Li X, Liu B, Wang J, Li S, Zhen X, Zhi J, Zou J, Li B, Shen Z, Zhang X, Zhang S, Nan CW. High-temperature capacitive energy stroage in polymer nanocomposites through nanoconfinement. Nat Commun 2024; 15:6655. [PMID: 39107376 PMCID: PMC11303793 DOI: 10.1038/s41467-024-51052-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Accepted: 07/25/2024] [Indexed: 08/10/2024] Open
Abstract
Polymeric-based dielectric materials hold great potential as energy storage media in electrostatic capacitors. However, the inferior thermal resistance of polymers leads to severely degraded dielectric energy storage capabilities at elevated temperatures, limiting their applications in harsh environments. Here we present a flexible laminated polymer nanocomposite where the polymer component is confined at the nanoscale, achieving improved thermal-mechanical-electrical stability within the resulting nanocomposite. The nanolaminate, consisting of nanoconfined polyetherimide (PEI) polymer sandwiched between solid Al2O3 layers, exhibits a high energy density of 18.9 J/cm3 with a high energy efficiency of ~ 91% at elevated temperature of 200°C. Our work demonstrates that nanoconfinement of PEI polymer results in reduced diffusion coefficient and constrained thermal dynamics, leading to a remarkable increase of 37°C in glass-transition temperature compared to bulk PEI polymer. The combined effects of nanoconfinement and interfacial trapping within the nanolaminates synergistically contribute to improved electrical breakdown strength and enhanced energy storage performance across temperature range up to 250°C. By utilizing the flexible ultrathin nanolaminate on curved surfaces such as thin metal wires, we introduce an innovative concept that enables the creation of a highly efficient and compact metal-wired capacitor, achieving substantial capacitance despite the minimal device volume.
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Affiliation(s)
- Xinhui Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Bo Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Jian Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Shuxuan Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Xin Zhen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Jiapeng Zhi
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Junjie Zou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Bei Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Zhonghui Shen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Xin Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices & International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China.
| | - Shujun Zhang
- Institute for Superconducting and Electronic Materials, Faculty of Engineering and Information Sciences, University of Wollongong, North Wollongong, NSW, 2522, Australia.
| | - Ce-Wen Nan
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China.
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Chang X, Li L, Li T, Zhou D, Zhang G. Accelerated microrockets with a biomimetic hydrophobic surface. RSC Adv 2016. [DOI: 10.1039/c6ra17066h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A biomimetic method was employed to accelerate the velocity and thereby to improve its propulsion efficiency of microrockets.
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Affiliation(s)
- Xiaocong Chang
- State Key Laboratory for Robotics and System
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Longqiu Li
- State Key Laboratory for Robotics and System
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Tianlong Li
- State Key Laboratory for Robotics and System
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Dekai Zhou
- State Key Laboratory for Robotics and System
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Guangyu Zhang
- State Key Laboratory for Robotics and System
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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Brunner R, Etsion I, Talke FE. Long time spreading of a microdroplet on a smooth solid surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1824-1829. [PMID: 19904955 DOI: 10.1021/la902567m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The long time spreading of microdroplets on a smooth solid surface is studied experimentally. An empirical expression is obtained for the spreading area as a function of time showing a final area when spreading stops. The mean film thickness of this final area appears to be independent of the initial volume of the droplet and of the spreading dynamics. A theoretical model is developed to predict this final uniform film thickness, based on volume conservation and the principle of minimum energy. Good agreement is found between the theoretical and experimental results.
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Affiliation(s)
- Ralf Brunner
- University of California, San Diego, La Jolla, California 92093-0401, USA.
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