Covalently cross-linked CaCu3Ti4O12 and poly(arylene ether nitrile) hybrids with enhanced high temperature energy storage properties

Zhou, Lingyun; Zhang, Zhengjiao; Feng, Yifu; Gao, Feng; Luo, Yu; Li, Shuang; Wei, Renbo; Wang, Lingling

doi:10.1016/j.mtcomm.2024.108544

Materials Today Communications

2024

DOI: 10.1016/j.mtcomm.2024.108544

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Covalently cross-linked CaCu3Ti4O12 and poly(arylene ether nitrile) hybrids with enhanced high temperature energy storage properties

Lingyun Zhou,

Zhengjiao Zhang,

Yifu Feng

et al.

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Cited by 2 publications

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Sandwich‐structured dielectrics constructed from carbon nanotube and polyarylene ether nitrile composite layers demonstrating positive and negative permittivity

Song,

Yang,

Lei

et al. 2024

Polymer Composites

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Polymeric dielectric materials with high energy storage density have attracted plenty of attention due to their broad application prospects in electronic device fields. However, energy density of polymer dielectrics is limited originating from the difficulty in balancing permittivity and breakdown strength. Herein, we report fabrication of sandwich‐structured polyarylene ether nitrile (PEN) composites with enhanced energy density by hot pressing single layered phthalonitrile groups modified carbon nanotube (Ph‐CNT) and PEN (Ph‐CNT/PEN) composite films demonstrating positive and negative permittivity. The Ph‐CNT/PEN composites exhibit positive permittivity at Ph‐CNT content lower than 6 wt%, while shows negative permittivity at a higher Ph‐CNT concentration. Attributing to the synergistic action of the positive and negative dielectric layer, the dielectric constant is enhanced to 90.9 at 200 kHz for sandwich‐structured PEN composite T‐6‐8‐6 at a thickness ratio of 1/0.5/1. Although the breakdown strength is decreased to 147.7 kV/mm, the 1/0.5/1 sandwich‐structured film T‐6‐8‐6 demonstrates an energy storage as high as 9.1 J/cm3, which is about 10 times to that of pure PEN. This boosted energy storage density presents a fresh approach to advancing high‐performance dielectric materials, offering wide‐ranging potential applications across electronic devices.Highlights Sandwich‐structured PEN composites with enhanced energy density are fabricated. Sandwich‐structured films consists of positive and negative dielectric layer. Ph‐CNT/PEN exhibit negative permittivity at a higher Ph‐CNT concentration. Dielectric constant increases due to synergistic action of dielectric layers. Sandwich‐structured film demonstrates an energy storage as high as 9.1 J/cm3.

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Sandwich‐structured dielectrics constructed from carbon nanotube and polyarylene ether nitrile composite layers demonstrating positive and negative permittivity

Song,

Yang,

Lei

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

Enhancing energy storage density of poly(arylene ether nitrile) via incorporating modified barium titanate nanorods and hot-stretching

Zhang,

Zhou,

Wang

et al. 2024

Nano Res.

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Covalently cross-linked CaCu3Ti4O12 and poly(arylene ether nitrile) hybrids with enhanced high temperature energy storage properties

Cited by 2 publications

References 56 publications

Sandwich‐structured dielectrics constructed from carbon nanotube and polyarylene ether nitrile composite layers demonstrating positive and negative permittivity

Sandwich‐structured dielectrics constructed from carbon nanotube and polyarylene ether nitrile composite layers demonstrating positive and negative permittivity

Enhancing energy storage density of poly(arylene ether nitrile) via incorporating modified barium titanate nanorods and hot-stretching

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