V2O5–Conductive polymer nanocables with built-in local electric field derived from interfacial oxygen vacancies for high energy density supercapacitors

2019 ◽  
Vol 7 (30) ◽  
pp. 17966-17973 ◽  
Author(s):  
Wenchao Bi ◽  
Juanjuan Huang ◽  
Mingshan Wang ◽  
Evan P. Jahrman ◽  
Gerald T. Seidler ◽  
...  
Keyword(s):  
Energy Density ◽  
Electric Field ◽  
Oxygen Vacancies ◽  
Conductive Polymers ◽  
Conductive Polymer ◽  
High Energy ◽  
Local Electric Field ◽  
High Energy Density ◽  
Interfacial Oxygen

Interfacial oxygen vacancies were induced in V2O5 by various conductive polymers with built-in local electric field for high-energy supercapacitors.

scholarly journals Improved dielectric constant and energy density of P(VDF-HFP) composites using NBT-xST (x=0, 0.10, 0.26) whiskers

2018 ◽  
Vol 08 (06) ◽  
pp. 1850040 ◽  
Author(s):  
Xuefan Zhou ◽  
Lu Wang ◽  
Guoliang Xue ◽  
Kechao Zhou ◽  
Hang Luo ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Dielectric Constant ◽  
Energy Storage ◽  
Energy Density ◽  
Electric Field ◽  
High Performance ◽  
Volume Fraction ◽  
High Energy ◽  
High Energy Density ◽  
Surface Modified

The high-performance energy-storage dielectric capacitors are increasingly important due to their wide applications in high power electronics. Here, we fabricated a novel P(VDF-HFP)-based capacitor with surface-modified NBT-[Formula: see text]ST ([Formula: see text], 0.10, 0.26) whiskers, denoted as Dop@NBT-[Formula: see text]ST/P(VDF-HFP). The influences of ST content, fillers’ volume fraction and electric field on the dielectric properties and energy-storage performance of the composites were investigated systematically. The results show that the dielectric constant monotonously increased with the increase of ST content and fillers’ volume fraction. The composite containing 10.0 vol% NBT-0.26ST whiskers possessed a dielectric constant of 39 at 1[Formula: see text]kHz, which was 5.6 times higher than that of pure P(VDF-HFP). It was noticed that the D-E loops of the composites became thinner and thinner with the increase of ST content. Due to the reduced remnant polarization, the composite with 5.0 vol% NBT-0.26ST whiskers achieved a high energy density of 6.18[Formula: see text]J/cm3 and energy efficiency of approximately 57% at a relatively low electric field of 200[Formula: see text]kV/mm. This work indicated that NBT-0.26ST whisker is a kind of potential ceramic filler in fabricating the dielectric capacitor with high discharged energy density and energy efficiency.

Engineering stable electrode-separator interfaces with ultrathin conductive polymer layer for high-energy-density Li-S batteries

2019 ◽  
Vol 23 ◽  
pp. 261-268 ◽  
Author(s):  
Yuanjian Li ◽  
Wenyu Wang ◽  
Xiaoxiao Liu ◽  
Eryang Mao ◽  
Mintao Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Conductive Polymer ◽  
High Energy ◽  
High Energy Density ◽  
Polymer Layer

High energy density of polymer nanocomposites at a low electric field induced by modulation of their topological-structure

2016 ◽  
Vol 4 (21) ◽  
pp. 8359-8365 ◽  
Author(s):  
Yang Shen ◽  
Dashan Shen ◽  
Xin Zhang ◽  
Jianyong Jiang ◽  
Zhenkang Dan ◽  
...  
Keyword(s):  
Energy Density ◽  
Electric Field ◽  
Polymer Nanocomposites ◽  
Topological Structure ◽  
High Energy ◽  
High Energy Density

High energy density at low electric field is achieved for polymer nanocomposites by modulating topological structure.

Designing lead-free bismuth ferrite-based ceramics learning from relaxor ferroelectric behavior for simultaneous high energy density and efficiency under low electric field

2018 ◽  
Vol 6 (38) ◽  
pp. 10211-10217 ◽  
Author(s):  
Ningtao Liu ◽  
Ruihong Liang ◽  
Zhiyong Zhou ◽  
Xianlin Dong
Keyword(s):  
Energy Density ◽  
Electric Field ◽  
Bismuth Ferrite ◽  
High Energy ◽  
Relaxor Ferroelectric ◽  
High Energy Density ◽  
Lead Free ◽  
Ferroelectric Behavior ◽  
Weakly Coupled

The strategy of constructing weakly coupled polar structures is feasible and effective to boost the energy density and efficiency for bismuth ferrite-based bulk ceramics.

scholarly journals Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

2020 ◽  
Vol 63 (7) ◽  
pp. 1205-1215 ◽  
Author(s):  
Yuenian Shen ◽  
Ke Zhang ◽  
Fang Yang ◽  
Zhihao Li ◽  
Zhe Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Oxygen Vacancies ◽  
High Energy ◽  
High Energy Density

scholarly journals Low-crystalline mesoporous CoFe2O4/C composite with oxygen vacancies for high energy density asymmetric supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (87) ◽  
pp. 55513-55522 ◽  
Author(s):  
Yan Zhao ◽  
Yuanguo Xu ◽  
Jie Zeng ◽  
Biao Kong ◽  
Xiwen Geng ◽  
...  
Keyword(s):  
Energy Density ◽  
Oxygen Vacancies ◽  
Cobalt Ferrite ◽  
Sol Gel ◽  
High Energy ◽  
Carbon Composite ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Calcination Process ◽  
Low Crystalline

A low-crystalline mesoporous cobalt ferrite and carbon composite (L-CoFe2O4/C) material was prepared via a sol–gel approach and calcination process. An L-CoFe2O4/C//AC asymmetric supercapacitor exhibited high energy density and power density.

Construction of cobalt oxyhydroxide nanosheets with rich oxygen vacancies as high-performance lithium-ion battery anodes

2021 ◽  
Vol 9 (1) ◽  
pp. 453-462
Author(s):  
Yonghuan Fu ◽  
Liewu Li ◽  
Shenghua Ye ◽  
Penggang Yang ◽  
Peng Liao ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Anode Material ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Oxyhydroxide

Hierarchical nanoporous cobalt oxyhydroxide (CoOOH) nanosheets are prepared for use as an anode material in high energy density lithium-ion batteries.

Sign in / Sign up

Export Citation Format

Share Document