A high-capacity polyaniline-intercalated layered vanadium oxide for aqueous ammonium-ion battery

2021 ◽  
Author(s):  
Chunhua Han ◽  
Jiao Zhu ◽  
Kai Fu ◽  
Dan Deng ◽  
Wen Luo ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
Current Density ◽  
Electrode Material ◽  
High Capacity ◽  
Interlayer Spacing ◽  
Ammonium Ion ◽  
A Current

A 1.55 nm-interlayer spacing-expanded polyaniline-intercalated vanadium oxide, as a new electrode material for NH4+-ion batteries, exhibits an ever-reported high capacity of ~307 mAh g-1 at a current density of 0.5...

7,7,8,8-Tetracyanoquinodimethane-assisted one-step electrochemical exfoliation of graphite and its performance as an electrode material

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4864-4873 ◽  
Author(s):  
Partha Khanra ◽  
Chang-No Lee ◽  
Tapas Kuila ◽  
Nam Hoon Kim ◽  
Min Jun Park ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
Electrode Material ◽  
Functionalized Graphene ◽  
Electrochemical Exfoliation ◽  
Water Dispersible ◽  
Surface Modifiers ◽  
One Step ◽  
Modified Graphene ◽  
A Current

Water-dispersible functionalized graphene via one-step electrochemical exfoliation of graphite was prepared using 7,7,8,8-tetracyanoquinodimethane (TCNQ) anions as surface modifiers and electrolytes. The specific capacitance value of TCNQ-modified graphene measured with electrolytes (1 M KOH) was 324 F g−1 at a current density of 1 A g−1.

scholarly journals Electrochemical Performances Investigation of New Carbon-Coated Nickel Sulfides as Electrode Material for Supercapacitors

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3509 ◽  
Author(s):  
Xinyu Lei ◽  
Mu Li ◽  
Min Lu ◽  
Xiaohui Guan
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
Electrode Material ◽  
Rate Capability ◽  
Nitrogen Atmosphere ◽  
Electrochemical Performances ◽  
Discharge Process ◽  
Carbon Coated ◽  
Water Bath Heating ◽  
A Current

A new carbon-coated nickel sulfides electrode material (NST/CNTs@C) has been synthesized through an easy-to-operate process: NiS2/CNTs which was prepared by a hydrothermal method reacted with BTC (1,3,5-benzenetricarboxylic acid) under the condition of water bath heating to obtain the precursor, and then the precursor was calcined in 450 °C under a nitrogen atmosphere to obtain NST/CNTs@C. The electrochemical performance of NST/CNTs@C has been greatly improved because the formation of a carbon-coated layer effectively increased the specific surface area, reduced the charge transport resistance and inhibited the morphological change of nickel sulfides in the charge–discharge process. Compared with pure NiS2 and NiS2/CNTs, NST/CNTs@C presented great specific capacitance (620 F·g−1 at a current density of 1 A·g−1), better cycle stability (49.19% capacitance retention after 1000 cycles) and more superior rate capability (when the current density was raised to 10 A·g−1 the specific capacitance remained 275 F·g−1).

Liquid exfoliation of interlayer spacing-tunable 2D vanadium oxide nanosheets: High capacity and rate handling Li-ion battery cathodes

Nano Energy ◽  
2017 ◽  
Vol 39 ◽  
pp. 151-161 ◽  
Author(s):  
Chuanfang (John) Zhang ◽  
Sang-Hoon Park ◽  
Sean E. O'Brien ◽  
Andrés Seral-Ascaso ◽  
Meiying Liang ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
High Capacity ◽  
Interlayer Spacing ◽  
Li Ion Battery ◽  
Liquid Exfoliation ◽  
Li Ion

Partially Graphitized Iron-Carbon Hybrid Composite as Electrochemical Supercapacitor Material

2020 ◽  
Author(s):  
Sai Rashmi M. ◽  
Ashish Singh ◽  
Chandra sekhar Rout ◽  
Akshaya Samal ◽  
Manav Saxena
Keyword(s):  
Iron Oxide ◽  
Current Density ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Composite ◽  
X Ray ◽  
Transmission Electron ◽  
Excellent Property ◽  
A Current

<p>The conversion of biomass into valuable carbon composites as an efficient non-precious energy storage electrode material have elicited extensive research interest. As synthesized partially graphitized iron oxide-carbon composite material (Fe<sub>3</sub>O<sub>4</sub>/Fe<sub>3</sub>C@C) shows an excellent property as an electrode material for supercapacitor. X-ray diffraction, High resolution transmission electron microscopy, X-ray photo-electron spectroscopy and Brunauer-Emmett-Teller analysis is used to study the structural, compositional and surface areal properties. The electrode material shows a specific surface area of 827.4 m<sup>2</sup>/g. Due to the synergistic effect of graphitic layers with iron oxide/carbide, Fe<sub>3</sub>O<sub>4</sub>/Fe<sub>3</sub>C@C hybrid electrode materials display high-performance for supercapacitor with excellent capacity of 878 F/g at a current density of 5A/g (3-electrode) and 211.6 F/g at a current density of 0.4A/g (2-electrode) in 6M KOH electrolyte with good cyclic stability.</p>

scholarly journals Fabrication of monodisperse nitrogen-doped carbon double-shell hollow nanoparticles for supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20694-20699 ◽  
Author(s):  
Juyoung Yun ◽  
Jaemoon Jun ◽  
Jungsup Lee ◽  
Jaehoon Ryu ◽  
Kisu Lee ◽  
...  
Keyword(s):  
Current Density ◽  
Electrode Material ◽  
Nitrogen Doping ◽  
High Surface ◽  
High Surface Area ◽  
High Specific Capacitance ◽  
Hollow Nanoparticles ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
A Current

A supercapacitor based on nitrogen-doped carbon double shell hollow nanoparticles as the electrode material exhibited a high specific capacitance of 202 F g−1at a current density of 0.5 A g−1due to high surface area and nitrogen-doping.

3D intra-stacked CoO/carbon nanocomposites welded by Ag nanoparticles for high-capacity, reversible lithium storage

Nanoscale ◽  
2015 ◽  
Vol 7 (23) ◽  
pp. 10368-10376 ◽  
Author(s):  
Changju Chae ◽  
Ki Woong Kim ◽  
Sue Jin Kim ◽  
Daehee Lee ◽  
Yejin Jo ◽  
...  
Keyword(s):  
Current Density ◽  
Ag Nanoparticles ◽  
High Capacity ◽  
Irreversible Capacity ◽  
Lithium Storage ◽  
Carbon Nanocomposites ◽  
Capacity Loss ◽  
A Current

We demonstrate 3D intra-stacked CoO/carbon nanocomposites welded by Ag nanoparticles with a capacity of 770 mA h g−1 at a current density of 2 A g−1, by reducing efficiently the irreversible capacity loss.

A crystalline Cu–Sn–S framework for high-performance lithium storage

2015 ◽  
Vol 3 (38) ◽  
pp. 19410-19416 ◽  
Author(s):  
Lina Nie ◽  
Yu Zhang ◽  
Kaiqi Ye ◽  
Jianyu Han ◽  
Yue Wang ◽  
...  
Keyword(s):  
Current Density ◽  
High Performance ◽  
High Stability ◽  
Three Dimensional ◽  
High Capacity ◽  
Lithium Storage ◽  
A Current

The three-dimensional crystalline (H3O)2(enH2)Cu8Sn3S12 framework exhibits a high capacity of 563 mA h g−1 at a current density of 0.1 A g−1 with high stability.

scholarly journals Partially Graphitized Iron-Carbon Hybrid Composite as Electrochemical Supercapacitor Material

2020 ◽  
Author(s):  
Sai Rashmi M. ◽  
Ashish Singh ◽  
Chandra sekhar Rout ◽  
Akshaya Samal ◽  
Manav Saxena
Keyword(s):  
Iron Oxide ◽  
Current Density ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Composite ◽  
X Ray ◽  
Transmission Electron ◽  
Excellent Property ◽  
A Current

<p>The conversion of biomass into valuable carbon composites as an efficient non-precious energy storage electrode material have elicited extensive research interest. As synthesized partially graphitized iron oxide-carbon composite material (Fe<sub>3</sub>O<sub>4</sub>/Fe<sub>3</sub>C@C) shows an excellent property as an electrode material for supercapacitor. X-ray diffraction, High resolution transmission electron microscopy, X-ray photo-electron spectroscopy and Brunauer-Emmett-Teller analysis is used to study the structural, compositional and surface areal properties. The electrode material shows a specific surface area of 827.4 m<sup>2</sup>/g. Due to the synergistic effect of graphitic layers with iron oxide/carbide, Fe<sub>3</sub>O<sub>4</sub>/Fe<sub>3</sub>C@C hybrid electrode materials display high-performance for supercapacitor with excellent capacity of 878 F/g at a current density of 5A/g (3-electrode) and 211.6 F/g at a current density of 0.4A/g (2-electrode) in 6M KOH electrolyte with good cyclic stability.</p>

One-Step Hydrothermal Preparation of 1D α-MoO3 Nanobelt Electrode Material for Supercapacitor

NANO ◽  
2019 ◽  
Vol 14 (07) ◽  
pp. 1950085 ◽  
Author(s):  
Puhong Wen ◽  
Jingjing Guo ◽  
Lijun Ren ◽  
Chuanchuan Wang ◽  
Yuzhu Lan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Current Density ◽  
Electrode Material ◽  
High Specific Capacitance ◽  
Raw Material ◽  
Hydrothermal Preparation ◽  
Ammonium Heptamolybdate ◽  
One Step ◽  
A Current

1D [Formula: see text]-MoO3 nanobelts were prepared using ammonium heptamolybdate tetrahydrate [(NH[Formula: see text]Mo7O[Formula: see text]H2O] as raw material by one-step hydrothermal method without template or guide agent at 180∘C. The layered [Formula: see text]-MoO3 nanobelt electrode has favorable electrochemical performance, and displays a fairly high specific capacitance, which can be up to 445[Formula: see text]F/g at a current density of 0.5[Formula: see text]A/g.

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