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Scalable Polymer Nanocomposites with Record High‐Temperature Capacitive Performance Enabled by Rationally Designed Nanostructured Inorganic Fillers

Li, He ; Ai, Ding ; Ren, Lulu ; Yao, Bin ; Han, Zhubing ; Shen, Zhonghui ; Wang, Jianjun ; Chen, Long‐Qing ; Wang, Qing

Advanced materials (Weinheim), 2019-06, Vol.31 (23), p.e1900875-n/a [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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  • Título:
    Scalable Polymer Nanocomposites with Record High‐Temperature Capacitive Performance Enabled by Rationally Designed Nanostructured Inorganic Fillers
  • Autor: Li, He ; Ai, Ding ; Ren, Lulu ; Yao, Bin ; Han, Zhubing ; Shen, Zhonghui ; Wang, Jianjun ; Chen, Long‐Qing ; Wang, Qing
  • Assuntos: Aluminum oxide ; capacitors ; Charge efficiency ; Dependence ; Dielectrics ; Electric power systems ; Electrical conduction ; energy density ; Fillers ; Flux density ; High temperature ; Morphology ; Nanocomposites ; Nanoparticles ; nanostructured fillers ; Nanowires ; Polymer matrix composites ; polymer nanocomposites ; Polymers
  • É parte de: Advanced materials (Weinheim), 2019-06, Vol.31 (23), p.e1900875-n/a
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    USDOE
  • Descrição: Next‐generation microelectronics and electrical power systems call for high‐energy‐density dielectric polymeric materials that can operate efficiently under elevated temperatures. However, the currently available polymer dielectrics are limited to relatively low working temperatures. Here, the solution‐processable polymer nanocomposites consisting of readily prepared Al2O3 fillers with systematically varied morphologies including nanoparticles, nanowires, and nanoplates are reported. The field‐dependent electrical conduction of the polymer nanocomposites at elevated temperatures is investigated. A strong dependence of the conduction behavior and breakdown strength of the polymer composites on the filler morphology is revealed experimentally and is further rationalized via computations. The polymer composites containing Al2O3 nanoplates display a record capacitive performance, e.g., a discharged energy density of 3.31 J cm−3 and a charge–discharge efficiency of >90% measured at 450 MV m−1 and 150 °C, significantly outperforming the state‐of‐the‐art dielectric polymers and nanocomposites that are typically prepared via tedious, low‐yield approaches. High‐temperature dielectric polymer nanocomposites with facilely prepared nanostructured Al2O3 fillers exhibit remarkable electrical energy storage and discharge capabilities at elevated temperatures and high electric fields, outperforming state‐of‐the‐art polymer dielectrics. The significant impact of the filler morphology on conduction behavior and capacitive performance of the composites is revealed.
  • Editor: Germany: Wiley Subscription Services, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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