Greatly improving energy storage density and reducing dielectric loss of carbon nanotube/cyanate ester composites through building a unique tri-layered structure with mica paper

2017 ◽  
Vol 5 (41) ◽  
pp. 21909-21918 ◽  
Author(s):  
Xiaobao Zhang ◽  
Li Yuan ◽  
Qingbao Guan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Carbon Nanotube ◽  
Energy Storage ◽  
Dielectric Loss ◽  
Layered Structure ◽  
High Energy ◽  
Cyanate Ester ◽  
Energy Storage Density ◽  
Storage Density ◽  
Low Dielectric ◽  
High Energy Storage Density

Carbon nanotube/cyanate ester–mica paper tri-layered structure composites with markedly high energy storage density and low dielectric loss were developed.

Lead‐free Ag 1−3 x La x NbO 3 antiferroelectric ceramics with high‐energy storage density and efficiency

2019 ◽  
Vol 102 (8) ◽  
pp. 4640-4647 ◽  
Author(s):  
Nengneng Luo ◽  
Kai Han ◽  
Laijun Liu ◽  
Biaolin Peng ◽  
Xinpeng Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Lead Free ◽  
Energy Storage Density ◽  
Storage Density ◽  
High Energy Storage Density ◽  
High Energy Storage

Modulation and mechanism of spatial structure for multi-layer cyanate ester resin composites to achieve remarkably increased energy storage density and decreased dielectric loss

2020 ◽  
pp. 002199832095188
Author(s):  
Xiaobao Zhang ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Energy Storage ◽  
Dielectric Loss ◽  
Spatial Structure ◽  
Breakdown Strength ◽  
Layer Structure ◽  
Single Layer ◽  
Cyanate Ester ◽  
Energy Storage Density ◽  
Spatial Structures ◽  
Storage Density

Overcoming sticky problems of large dielectric loss and poor breakdown strength ( Eb) is prerequisite of actual applications for high dielectric constant polymer composites. Herein, three kinds of multi-layer structure composites with different spatial structures (2MP-CE/CNT, CE/CNT-2MP-CE/CNT, MP-CE/CNT-MP) were prepared based on carbon nanotubes (CNTs), cyanate ester (CE) resin and mica paper (MP). Compared with traditional single-layer CE/CNT composite, multi-layer CE/CNT-2MP-CE/CNT composites, of which the middle layer is two pieces of MPs with a thickness of 60 µm, while both bottom and top layers are CE/CNT composite, simultaneously achieve 105 reduction in dielectric loss and 18.1 times increase in energy storage density ( Ue). Through modulating two sheets of MPs and CE/CNT as top and bottom layer, respectively, 2MP-CE/CNT composite with 60 μm MPs has the largest breakdown strength ( Eb), its Eb and Ue are severally about 7.1 and 19.5 times of those of CE/CNT composite. The relationship and mechanism between spatial structure and integrated performance such as dielectric properties, Eb and Ue of composites were systematically investigated. The attractive integrated performances of CE/CNT-2MP-CE/CNT and 2MP-CE/CNT composites are attributed to their unique composition and spatial structures, which bring special micro-capacitance and interfacial polarization, and thus leading to outstanding performances. Therefore, this investigation provides a strategy for getting desirable performances through building composites with specific spatial structure.

Fine-grained BNT-based lead-free composite ceramics with high energy-storage density

2019 ◽  
Vol 45 (16) ◽  
pp. 19895-19901 ◽  
Author(s):  
Weigang Ma ◽  
Pengyuan Fan ◽  
David Salamon ◽  
Suwadee Kongparakul ◽  
Chanatip Samart ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Lead Free ◽  
Energy Storage Density ◽  
Composite Ceramics ◽  
Storage Density ◽  
Fine Grained ◽  
High Energy Storage Density ◽  
High Energy Storage
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