scholarly journals High-performance colossal permittivity materials of (Nb + Er) co-doped TiO2 for large capacitors and high-energy-density storage devices

2016 ◽  
Vol 18 (35) ◽  
pp. 24270-24277 ◽  
Author(s):  
Mei-Yan Tse ◽  
Xianhua Wei ◽  
Jianhua Hao
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Secondary Phases ◽  
Storage Devices ◽  
Low Dielectric ◽  
Colossal Permittivity ◽  
Co Doped

Our work shows contributions to the high-performance dielectric properties, including a CP of up to 104–105 and a low dielectric loss down to 0.03 in (Er0.5Nb0.5)xTi1−xO2 materials with secondary phases.

scholarly journals Enhanced dielectric properties of colossal permittivity co-doped TiO2/polymer composite films

RSC Advances ◽  
2018 ◽  
Vol 8 (57) ◽  
pp. 32972-32978 ◽  
Author(s):  
Mei-Yan Tse ◽  
Xianhua Wei ◽  
Chi-Man Wong ◽  
Long-Biao Huang ◽  
Kwok-ho Lam ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Energy Density ◽  
Polymer Composite ◽  
Composite Films ◽  
High Energy ◽  
High Energy Density ◽  
Doped Tio2 ◽  
Technological Potential ◽  
Colossal Permittivity ◽  
Co Doped

Colossal permittivity (CP) materials have shown great technological potential for advanced microelectronics and high-energy-density storage applications.

scholarly journals MoO2 nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20173-20183
Author(s):  
Yasai Wang ◽  
Guilin Feng ◽  
Yang Wang ◽  
Zhenguo Wu ◽  
Yanxiao Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources.

scholarly journals A nitrogen–sulfur co-doped porous graphene matrix as a sulfur immobilizer for high performance lithium–sulfur batteries

2016 ◽  
Vol 4 (44) ◽  
pp. 17381-17393 ◽  
Author(s):  
Jing Xu ◽  
Dawei Su ◽  
Wenxue Zhang ◽  
Weizhai Bao ◽  
Guoxiu Wang
Keyword(s):  
High Performance ◽  
Physical Adsorption ◽  
High Energy ◽  
High Energy Density ◽  
Chemical Binding ◽  
Porous Graphene ◽  
Long Cycle Life ◽  
Lithium Sulfur Batteries ◽  
Co Doped ◽  
Lithium Sulfur

The combination of the physical adsorption of lithium polysulfides onto porous graphene and the chemical binding of polysulfides to N and S sites promotes reversible Li2S/polysulfide/S conversion, realizing high performance Li–S batteries with long cycle life and high-energy density.

Nanodiamond/Polyimide High Temperature Dielectric Films for Energy Storage Applications

2013 ◽  
Vol 785-786 ◽  
pp. 410-416
Author(s):  
David H. Wang ◽  
Scott P. Fillery ◽  
Michael F. Durstock ◽  
Li Ming Dai ◽  
Richard A. Vaia ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Benzoic Acid ◽  
Surface Functionalization ◽  
High Energy ◽  
High Energy Density ◽  
Dielectric Films ◽  
Benzoic Acid Derivative ◽  
Energy Storage Applications

CP2 polyimide (prepd. from 6FDA and 1,3-bis (3-aminophenoxy) benzene) was blended with (1-50 wt.%) detonation nanodiamonds (DND, pristine, acetone-washed, and 4-(2,4,6-trimethylphenoxy) benzoic acid-functionalized), and the blends were evaluated as thin films for its potential utility in high-energy-density capacitors that would have stable dielectric properties over a wide temperature range (-55 to 300°C) and at frequencies up to or greater than 100 kHz. Both the dielectric storage and loss increased substantially with DND content. Surface functionalization (with the above benzoic acid derivative) significantly reduced the dielectric loss, while the use of acetone-washed DNDs had no effect on the dielectric loss. DND was also blended with CP2 via in-situ polymerization and found to have little effect on the dielectric properties.

Novel Polar-fluoropolymer Blends with Tailored Nanostructures for High Energy Density and Low Loss Capacitor Applications

2012 ◽  
Vol 1403 ◽  
Author(s):  
Shan Wu ◽  
Minren Lin ◽  
David S-G. Lu ◽  
Lei Zhu ◽  
Q. M. Zhang
Keyword(s):  
Dielectric Loss ◽  
Energy Density ◽  
Electric Fields ◽  
Vinylidene Fluoride ◽  
High Energy ◽  
High Energy Density ◽  
Low Loss ◽  
Blend Films ◽  
Low Dielectric ◽  
High Electric Fields

ABSTRACTDielectric polymers with high energy density with low loss at high electric fields are highly desired for many energy storage and regulation applications. A polar-fluoropolymer blend consisting of a high energy density polar-fluoropolymer of poly(vinylidene fluoride-chlorotrifluoroethylene) (P(VDF-CTFE)) with a low dielectric loss polymer of poly(ethylene-chlorotrifluoroethylene) (ECTFE) was developed and investigated. We show that the two polymers are partially miscible which leads to blends with high energy density and low loss. Moreover, by introducing crosslinking to further tailor the nano-structures of the blends a markedly reduction of losses in the blend films at high field can be achieved. The crosslinked blend films show a dielectric constant of 7 with a dielectric loss of 1% at low field. Furthermore, the blends maintain a high energy density and low loss (∼3%) at high electric fields (> 250 MV/m).

B/N co-doped carbon nanosphere frameworks as high-performance electrodes for supercapacitors

2018 ◽  
Vol 6 (17) ◽  
pp. 8053-8058 ◽  
Author(s):  
Jian Hao ◽  
Jiemin Wang ◽  
Si Qin ◽  
Dan Liu ◽  
Yinwei Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
High Energy ◽  
Cycle Stability ◽  
Carbon Nanospheres ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Energy And Power Density ◽  
Co Doped ◽  
Electrodes For Supercapacitors

A novel B/N co-doped carbon nanospheres framework is synthesized by a facile, economic, environmental and scalable method. The as-obtained materials display extra-high capacitive performance and exceptional long cycle stability with the merits of high energy and power density. We believe that this material will be applicable in the application of integrated energy storage devices.

Dielectric Properties and Microstructure of Y-Al-Ga-Si Co-Doped Barium Titanate Ceramics

2014 ◽  
Vol 602-603 ◽  
pp. 700-704
Author(s):  
Min Jia Wang ◽  
Qi Long Zhang ◽  
Xin Hui Zhao ◽  
Hui Yang
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
X Ray Diffraction ◽  
Solid State Method ◽  
Low Dielectric ◽  
Doped Barium Titanate ◽  
Titanate Ceramics ◽  
Functional Components ◽  
Co Doped

Multilayer ceramic capacitors (MLCC) are important functional components of electronic information technology. The development of AC MLCC requires low dielectric loss and high AC breakdown voltage. In this paper, Y-Al-Ga-Si co-doped barium titanate ceramics were prepared by conventional solid state method. Microstructures, surface morphology and dielectric properties were investigated by X-ray diffraction, SEM, and LCR analyzer, respectively. Y3+ entered into the lattice of BaTiO3, replaced A-sites and B-sites, suppressed grain growth effectively, and made crystal structure change from tetragonal to pseudo-cubic, which reduced dielectric loss and lowered the Curie peak. The sintering characteristic and permittivity can be improved by the incorporation of Al and Ga. BaTiO3 -0.06Y2O3 - 0.02Ga2O3 -0.01Al2O3 -0.01SiO2 ceramics sintered at 1380°C achieved good dielectric properties: εr= ~2223, tanδ =~1.1% (at 1kHz), ΔC/C25 <~15.26% (from 55°C to 150°C).

scholarly journals A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Junwei Li ◽  
Xiang Hu ◽  
Guobao Zhong ◽  
Yangjie Liu ◽  
Yaxin Ji ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Density Functional ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Capacitance Performance ◽  
Hybrid Capacitors ◽  
Co Doped ◽  
Macroporous Carbon

AbstractPotassium-ion hybrid capacitors (PIHCs) tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density, high power density, and low cost; the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output. Herein, based on prediction of density functional theory calculations, we find Se/N co-doped porous carbon is a promising candidate for K+ storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional (3D) macroporous carbon (Se/N-3DMpC), which features favorable properties of connective hierarchical pores, expanded interlayer structure, and rich activity site for boosting pseudocapacitive activity and kinetics toward K+ storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cathode. As expected, the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg−1 and a power output of 8100 W kg−1 as well as excellent long service life. The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

High-performance flexible quasi-solid-state Zn–MnO2 battery based on MnO2 nanorod arrays coated 3D porous nitrogen-doped carbon cloth

2017 ◽  
Vol 5 (28) ◽  
pp. 14838-14846 ◽  
Author(s):  
Wenda Qiu ◽  
Yu Li ◽  
Ao You ◽  
Zemin Zhang ◽  
Guangfu Li ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Nanorod Arrays ◽  
Energy Storage Devices ◽  
Environmental Friendliness ◽  
Storage Devices ◽  
Nitrogen Doped Carbon

Aqueous Zn–MnO2 batteries have great potential as flexible energy storage devices owing to their low cost, high energy density, safety, and environmental friendliness.

Electrode materials based on α-NiCo(OH)2 and rGO for high performance energy storage devices

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102504-102512 ◽  
Author(s):  
J. M. Gonçalves ◽  
R. R. Guimarães ◽  
C. V. Nunes ◽  
A. Duarte ◽  
B. B. N. S. Brandão ◽  
...  
Keyword(s):  
Composite Material ◽  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Charge Discharge

Described herein is a composite material based on rGO and α-NiCo(OH)2 nanoparticles combining very fast charge/discharge processes with the high energy density of batteries, suitable for application in high performance energy storage devices.

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