2019
DOI: 10.1016/j.nanoen.2019.103916
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Giant permittivity materials with low dielectric loss over a broad temperature range enabled by weakening intermolecular hydrogen bonds

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Cited by 43 publications
(32 citation statements)
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“…Another work by Zhang and coworkers suggests that the polymer blending strategy is also applicable to other high T g dipolar polymers, e.g., PEI and poly(ether-methyl-ether-urea) (PEMEU). 206 The PEI/PEMEU blend shows a high K of 5.8 and a low tan  of below 1% over a wide temperature range up to 150 °C . The increased K in PEI/PEMEU blend is attributed to the disruption of hydrogen bonds and improved free volume for dipoles in the glassy state.…”
Section: Dielectric Polymer Blendsmentioning
confidence: 94%
“…Another work by Zhang and coworkers suggests that the polymer blending strategy is also applicable to other high T g dipolar polymers, e.g., PEI and poly(ether-methyl-ether-urea) (PEMEU). 206 The PEI/PEMEU blend shows a high K of 5.8 and a low tan  of below 1% over a wide temperature range up to 150 °C . The increased K in PEI/PEMEU blend is attributed to the disruption of hydrogen bonds and improved free volume for dipoles in the glassy state.…”
Section: Dielectric Polymer Blendsmentioning
confidence: 94%
“…Meanwhile it demonstrated excellent dielectric properties over a wide temperature range (−70 °C to 150 °C) ( Figure 3 c,d). However, the breakdown and energy storage properties of PEI at high temperatures have not been studied [ 62 ].…”
Section: Linear Polymer Dielectricsmentioning
confidence: 99%
“…( c ) the relationship between dielectric constant and blend composition (weight ratio of PEI: PEMEU) at 1 kHz; ( d ) The dielectric properties of a 1:1 mixture of PEI and PEMEU vary with temperature at different frequencies. Reprinted with permission from [ 62 ]. Copyright (2019), Elsevier.…”
Section: Linear Polymer Dielectricsmentioning
confidence: 99%
“…Employment of renewable energy as an alternative to conventional fossils based energy sources is restricted by energy storage and its on-demand utilization. Now researchers are tasked to develop state-of-the-art energy storage devices with minimal energy losses to help substitute fossil-fuel-based energy sources with renewable energy sources for the betterment of the environment . Commonly existing energy storage devices available now are batteries, dielectric capacitors, and electrochemical supercapacitors. ,, Superior attributes such as ultrahigh power density, long cycle lifetime, and fast charge–discharge rate make dielectric capacitors strong candidates to be employed in pulsed power systems. However, flexible film dielectric materials have a low energy density. Therefore, it is important to improve their energy density in order to utilize them as energy storage devices (ESDs). …”
Section: Introductionmentioning
confidence: 99%