A high-performance asymmetric supercapacitor designed with a three-dimensional interconnected porous carbon framework and sphere-like nickel nitride nanosheets

The novel asymmetric supercapacitor was assembled based on a three-dimensional (3D) interconnected porous carbon framework as the negative electrode and 3D sphere-like nickel nitride nanosheets as the positive electrode in aqueous electrolyte.

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An asymmetric supercapacitor based on controllable WO3 nanorod bundle and alfalfa-derived porous carbon

RSC Advances ◽

10.1039/d1ra04788d ◽

2021 ◽

Vol 11 (59) ◽

pp. 37631-37642

Author(s):

Kanjun Sun ◽

Fengting Hua ◽

Shuzhen Cui ◽

Yanrong Zhu ◽

Hui Peng ◽

...

Keyword(s):

Activated Carbon ◽

Porous Carbon ◽

Aqueous Electrolyte ◽

Negative Electrode ◽

Positive Electrode ◽

Asymmetric Supercapacitor ◽

Wo3 Nanorod ◽

Porous Activated Carbon ◽

Nanorod Bundle

A asymmetric supercapacitor is assembled on the basis of an inerratic hexagonal-like WO3 nanorod bundle as a negative electrode and graphene-like alfalfa-derived porous activated carbon as the positive electrode in 1 M H2SO4 aqueous electrolyte.

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

Journal of Materials Chemistry A ◽

10.1039/c5ta03469h ◽

2015 ◽

Vol 3 (31) ◽

pp. 16150-16161 ◽

Cited By ~ 142

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.

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High performance asymmetric supercapacitor having novel 3D networked polypyrrole nanotube/N-doped graphene negative electrode and core-shelled MoO3/PPy supported MoS2 positive electrode

Electrochimica Acta ◽

10.1016/j.electacta.2019.07.044 ◽

2019 ◽

Vol 320 ◽

pp. 134533 ◽

Cited By ~ 10

Author(s):

Fitri Nur Indah Sari ◽

Jyh-Ming Ting

Keyword(s):

High Performance ◽

Negative Electrode ◽

Positive Electrode ◽

Asymmetric Supercapacitor ◽

Doped Graphene ◽

Polypyrrole Nanotube

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High Performance Asymmetric Supercapacitor Based on Hierarchical Carbon Cloth In Situ Deposited with h-WO3 Nanobelts as Negative Electrode and Carbon Nanotubes as Positive Electrode

Micromachines ◽

10.3390/mi12101195 ◽

2021 ◽

Vol 12 (10) ◽

pp. 1195

Author(s):

Jianhao Lin ◽

Xusheng Du

Keyword(s):

Carbon Nanotubes ◽

High Performance ◽

Hydrothermal Reaction ◽

Synthesis Method ◽

Negative Electrode ◽

Current Collector ◽

Cell System ◽

Positive Electrode ◽

Carbon Cloth ◽

Asymmetric Supercapacitor

Urchin-like tungsten oxide (WO3) microspheres self-assembled with nanobelts are deposited on the surface of the hydrophilic carbon cloth (CC) current collector via hydrothermal reaction. The WO3 nanobelts in the urchin-like microspheres are in the hexagonal crystalline phase, and their widths are around 30–50 nm. The resulted hierarchical WO3 / CC electrode exhibits a capacitance of 3400 mF / cm2 in H2SO4 electrolyte in the voltage window of −0.5 ~ 0.2 V, which makes it an excellent negative electrode for asymmetric supercapacitors. To improve the capacitive performance of the positive electrode and make it comparable with that of the WO3 / CC electrode, both the electrode material and the electrolyte have been carefully designed and prepared. Therefore, the hydrophilic CC is further coated with carbon nanotubes (CNTs) to create a hierarchical CNT / CC electrode via a convenient flame synthesis method, and a redox-active electrolyte containing an Fe2+ / Fe 3+ couple is introduced into the half-cell system as well. As a result, the high performance of the asymmetric supercapacitor assembled with both the asymmetric electrodes and electrolytes has been realized. It exhibits remarkable energy density as large as 403 μW h / cm2 at 15 mW / cm2 and excellent cyclic stability after 10,000 cycles.

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

Nanomaterials ◽

10.3390/nano9040527 ◽

2019 ◽

Vol 9 (4) ◽

pp. 527 ◽

Cited By ~ 16

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.

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