Novel core/shell CoSe2@PPy nanoflowers for high-performance fiber asymmetric supercapacitors

2018 ◽  
Vol 6 (22) ◽  
pp. 10361-10369 ◽  
Author(s):  
Qiufan Wang ◽  
Yun Ma ◽  
Xiao Liang ◽  
Daohong Zhang ◽  
Menghe Miao
Keyword(s):  
High Performance ◽  
Negative Electrode ◽  
High Volume ◽  
High Rate ◽  
Core Shell ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Volume Energy ◽  
High Performance Fiber ◽  
Rate Capacity

A novel type of fiber asymmetric supercapacitor was fabricated by assembling a CoSe2@PPy core/shell nanoflower positive electrode and an EACF negative electrode. Full cells show good flexibility, high-rate capacity, outstanding volume specific capacitance, high volume energy density and are used to power mini-scale photodetectors.

Three-dimensional Co3O4@C@Ni3S2 sandwich-structured nanoneedle arrays: towards high-performance flexible all-solid-state asymmetric supercapacitors

2015 ◽  
Vol 3 (31) ◽  
pp. 16150-16161 ◽  
Author(s):  
Dezhi Kong ◽  
Chuanwei Cheng ◽  
Ye Wang ◽  
Jen It Wong ◽  
Yaping Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
High Performance ◽  
Three Dimensional ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors

A novel asymmetric supercapacitor composed of Co3O4@C@Ni3S2 NNAs as the positive electrode and activated carbon (AC) as the negative electrode can deliver a high energy density and excellent long cycle stability.

Hierarchical core–shell structural NiMoO4@NiS2/MoS2 nanowires fabricated via an in situ sulfurization method for high performance asymmetric supercapacitors

2019 ◽  
Vol 7 (38) ◽  
pp. 21759-21765 ◽  
Author(s):  
Duo Chen ◽  
Mengjie Lu ◽  
La Li ◽  
Dong Cai ◽  
Junzhi Li ◽  
...  
Keyword(s):  
High Performance ◽  
Core Shell ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors

Core–shell structured NiMoO4@NiS2/MoS2 nanowires are fabricated via a novel facile in situ sulfurization method and applied in a high performance asymmetric supercapacitor.

Rational design of uniformly embedded metal oxide nanoparticles into nitrogen-doped carbon aerogel for high-performance asymmetric supercapacitors with a high operating voltage window

2016 ◽  
Vol 4 (42) ◽  
pp. 16576-16587 ◽  
Author(s):  
Guanglin Sun ◽  
Hangyu Xie ◽  
Jiabing Ran ◽  
Liya Ma ◽  
Xinyu Shen ◽  
...  
Keyword(s):  
High Performance ◽  
Rational Design ◽  
Metal Oxide Nanoparticles ◽  
Negative Electrode ◽  
Carbon Aerogel ◽  
Operating Voltage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

We report the design of a novel asymmetric supercapacitor (ASC) based on MnO/carbon aerogel (MnO/NCA) as the positive electrode and Fe2O3/carbon aerogel (Fe2O3/NCA) as the negative electrode.

scholarly journals Hierarchical PANI/NiCo-LDH Core-Shell Composite Networks on Carbon Cloth for High Performance Asymmetric Supercapacitor

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 527 ◽  
Author(s):  
Xinjin Ge ◽  
Ying He ◽  
Tomas Plachy ◽  
Natalia Kazantseva ◽  
Petr Saha ◽  
...  
Keyword(s):  
High Performance ◽  
High Current Density ◽  
Oxidative Polymerization ◽  
Three Dimensional ◽  
Negative Electrode ◽  
Core Shell ◽  
Potential Range ◽  
Carbon Cloth ◽  
Asymmetric Supercapacitor ◽  
Shell Composite

In this work, a facile two-step strategy is adopted to construct hierarchical polyaniline/NiCo-layered double hydroxide (PANI/NiCo-LDH) core-shell composite nanofiber networks on carbon cloth (CC). Three-dimensional (3D) porous PANI nanofiber networks are firstly uniformly anchored on CC by in-situ oxidative polymerization, followed by growth of NiCo-LDH nanoflakes on the crosslinked PANI framework via electrochemical deposition. The morphology and electrochemical properties of PANI/NiCo-LDH composites are controlled by the deposition time of LDH. Benefiting from rapid electron transport and ion diffusion, the well-defined PANI/NiCo-LDH hierarchical composite with 200 s deposition of LDH delivers a large capacitance of 1845 F g−1 at 0.5 A g−1 and excellent cycling stability of 82% capacitance retention after 5000 cycles at a very high current density of 10.0 A g−1. Furthermore, an asymmetric supercapacitor (ASC) assembled with PANI/NiCo-LDH as a positive electrode and activated carbon (AC) as a negative electrode exhibits a high capacitance of 147.2 F g−1 in a potential range from 0 to 1.5 V and superior energy density of 46.0 Wh kg−1 at a power density of 351.6 W kg−1.

General solution-processed formation of porous transition-metal oxides on exfoliated molybdenum disulfides for high-performance asymmetric supercapacitors

2017 ◽  
Vol 5 (22) ◽  
pp. 11236-11245 ◽  
Author(s):  
Kai Wang ◽  
Jing Yang ◽  
Jixin Zhu ◽  
Le Li ◽  
Ying Liu ◽  
...  
Keyword(s):  
General Solution ◽  
Transition Metal Oxides ◽  
Electrode Material ◽  
High Performance ◽  
Large Scale ◽  
Negative Electrode ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Positive Electrode Material ◽  
Negative Electrode Material

High-performance asymmetric supercapacitor is designed with MoS2–NiO or MoS2–Co3O4 as positive electrode material and MoS2–Fe2O3 as negative electrode material via an easy and large-scale fabrication approach.

Vacancies-engineered MoO3 and Na+-preinserted MnO2 in-situ grown N-doped graphene nanotubes as electrode materials for high-performance asymmetric supercapacitor

2021 ◽  
Author(s):  
Jian Zhao ◽  
He Cheng ◽  
Huanyu Li ◽  
Yan-Jie Wang ◽  
Qingyan Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
Cooperative Effect ◽  
Electrochemical Energy Storage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Doped Graphene ◽  
Power Densities

Developing advanced negative and positive electrode materials for asymmetric supercapacitors (ASCs) as the electrochemical energy storage can enable the device to reach high energy/power densities resulting from the cooperative effect...

Hierarchically 3D Nanoporous Structured Co9S8@Nix:Moy–Se Core–shell Nanowire Arrays Electrode for the High-performance Asymmetric Supercapacitors

2021 ◽  
Author(s):  
Dai Jiu Yi ◽  
Soram Bobby Singh ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Energy Conversion ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
Storage Systems ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Good Strategy ◽  
Free Standing ◽  
Asymmetric Supercapacitors

The rational design of free-standing hierarchic core–shell nanoporous architectures is a good strategy for fabricating next-generation electrode materials for application to electrochemical energy conversion/storage systems. Herein, hierarchical core–shell 3D Co9S8@Nix:Moy–Se...

Hierarchical Ni-Co-S@Ni-W-O core–shell nanosheet arrays on nickel foam for high-performance asymmetric supercapacitors

Nano Research ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 1415-1425 ◽  
Author(s):  
Weidong He ◽  
Zhifu Liang ◽  
Keyu Ji ◽  
Qingfeng Sun ◽  
Tianyou Zhai ◽  
...  
Keyword(s):  
High Performance ◽  
Nickel Foam ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays
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