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Xinshuai Li et al.
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Xin Zhang et al.
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SCIENCE CHINA-MATERIALS
(2021)
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Shengbiao Sun et al.
Summary: Dielectric polymer capacitors are widely used in advanced electronics due to their high power density, but achieving high energy density and discharge efficiency remains a challenge. A novel all-polymer trilayer structure is proposed to address this issue by combining different polymers with specific properties to optimize the electric field distribution, resulting in significantly improved breakdown strength, energy density, efficiency, and cycling stability.
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Summary: The unique design of an asymmetric all-polymer trilayer composite has been reported to achieve high energy density and high discharge efficiency. By utilizing a nonlinear dielectric layer for high energy density and a linear dielectric layer for high discharge efficiency, along with a transition layer to homogenize the electric field distribution, a significant improvement in breakdown strength and energy density has been demonstrated, resulting in a high efficiency of 89.9% and a high energy density of 12.15 J cm(-3).
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Mengjia Feng et al.
Summary: Using a multilayer structure to improve the energy storage density of dielectric materials has attracted attention in research due to its potential in enhancing the performance of electrostatic capacitors. Studies have shown that this method displays excellent effects and huge potential for future applications.
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