A hybrid supercapacitor based on flower-like Co(OH)2 and urchin-like VN electrode materials

2014 ◽  
Vol 2 (32) ◽  
pp. 12724-12732 ◽  
Author(s):  
Rutao Wang ◽  
Xingbin Yan ◽  
Junwei Lang ◽  
Zongmin Zheng ◽  
Peng Zhang
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Hybrid Supercapacitor ◽  
Excellent Electrochemical Performance

A new hybrid supercapacitor with excellent electrochemical performance is fabricated by using the flower-like Co(OH)2 and urchin-like VN.

Facile synthesis of nickel–cobalt sulfide/reduced graphene oxide hybrid with enhanced capacitive performance

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58777-58783 ◽  
Author(s):  
Xiaoqing Cai ◽  
Xiaoping Shen ◽  
Lianbo Ma ◽  
Zhenyuan Ji ◽  
Lirong kong
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Cobalt Sulfide ◽  
Facile Synthesis ◽  
One Pot ◽  
Nickel Cobalt ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

A facile one-pot refluxing method was developed to prepare nickel–cobalt sulfide/reduced graphene oxide (RGO) hybrids. The as-synthesized NiCo2S4/RGO hybrids as electrode materials for supercapacitors exhibit excellent electrochemical performance.

scholarly journals The preparation and characterization of SnO2/rGO nanocomposites electrode materials for supercapacitor

2020 ◽  
Vol 29 ◽  
pp. 2633366X2090983 ◽  
Author(s):  
Yingtao Zhang ◽  
Manna Liu ◽  
Shishuai Sun ◽  
Liying Yang
Keyword(s):  
Fourier Transform ◽  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Tin Oxide ◽  
Electrode Materials ◽  
X Ray ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene ◽  
Scanning Electron

The ultrafine tin oxide (SnO2) nanorods/reduced graphene oxide (rGO) composites are synthesized by a two-step hydrothermal method. The prepared nanocomposites are characterized by scanning electron microscope, X-ray diffractometer, and Fourier transform infrared spectra. The results of electrochemical performance show that specific capacitance of the composite can reach 262.2 F g−1 at the current density of 100 mA g−1 in the 1 M Na2SO4 electrolyte. An initial capacitance retention of the composite is 96.1% after 6000 cycles, indicating its excellent electrochemical performance.

scholarly journals Hierarchical NiS/N-doped carbon composite hollow spheres with excellent supercapacitor performance

2017 ◽  
Vol 5 (40) ◽  
pp. 21257-21265 ◽  
Author(s):  
Tao Liu ◽  
Chuanjia Jiang ◽  
Bei Cheng ◽  
Wei You ◽  
Jiaguo Yu
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Hollow Spheres ◽  
Carbon Composite ◽  
Carbon Spheres ◽  
Excellent Electrochemical Performance ◽  
Supercapacitor Performance ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The synthesized NiS nanosheets anchored on N-doped hollow carbon spheres (NHCSs) exhibit excellent electrochemical performance as electrode materials for supercapacitors.

Au-Embedded ZnO/NiO Hybrid with Excellent Electrochemical Performance as Advanced Electrode Materials for Supercapacitor

2015 ◽  
Vol 7 (4) ◽  
pp. 2480-2485 ◽  
Author(s):  
Xin Zheng ◽  
Xiaoqin Yan ◽  
Yihui Sun ◽  
Zhiming Bai ◽  
Guangjie Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Excellent Electrochemical Performance

Effect of Reaction Time on the Performance of Co3O4 Electrode Materials for High Performance Supercapacitors

2020 ◽  
Vol 15 (12) ◽  
pp. 1429-1435
Author(s):  
Yan Zhao ◽  
Yucai Li ◽  
Dong Zhang ◽  
Shiwei Song ◽  
Jian Wang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Electrochemical Performance ◽  
Current Density ◽  
High Performance ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Specific Capacitance ◽  
High Porosity ◽  
Excellent Electrochemical Performance ◽  
Hydrothermal Approach

Electrochemical performance of the material depends on the morphology and structural characteristics of the material. Co3O4 samples shows the remarkable electrochemical performance owing to the high porosity, appropriate pore size distribution and novel architecture and reaction time effect of morphology. In this work, Co3O4 nanowires grown on Ni foam have been synthesized through a facile hydrothermal approach, revealing large capacitance of 2178.4 mF cm-2 at the current density of 2 mA cm-2 and cycling stability with 79.6% capacitance retention after 6000 cycles. The as-assembled device delivers excellent electrochemical performance for high specific capacitance of 356 mF cm-2 at the current density of 2 mA cm-2 and high cycle stability.

Orderly Arranged Bead-Chain Cu2O-Mn3O4-NiO Ternary Nanocomposites with High Specific Capacitance for Supercapacitors

NANO ◽  
2020 ◽  
Vol 15 (06) ◽  
pp. 2050082
Author(s):  
Lei Su ◽  
Chunyong Zhang ◽  
Li Shu ◽  
Linna Huang ◽  
Jianning Li ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Tests ◽  
Excellent Electrochemical Performance ◽  
Oxide Particles

A series of metal oxide nanocomposites have been successfully synthesized by electrospinning technology. The obtained nanocomposites (Cu2O-Mn3O4-NiO) are an ordered arrangement of metal oxide particles (10[Formula: see text]nm), with the shape like bead chain. The acquired Cu2O-Mn3O4-NiO ternary nanocomposites were used as electrode materials to manufacture a supercapacitor. Electrochemical tests showed that the synthesis of nanocomposites made of electrode materials had good electrochemical performance in 6[Formula: see text]mol/L KOH electrolyte. The results showed that at a scan rate of 5[Formula: see text]mV/s, the specific capacitance of Cu2O-Mn3O4-NiO had a larger specific capacitance of 1306[Formula: see text]F/g than NiO, Cu2O-NiO and Mn3O4-NiO. The excellent electrochemical performance showed that the electrostatic spinning method is an effective technology for developing nanocomposites for energy storage devices.

scholarly journals Synthesis of Two-Dimensional Sr-Doped LaNiO3 Nanosheets with Improved Electrochemical Performance for EnergyStorage

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 155
Author(s):  
Bin Zhang ◽  
Ping Liu ◽  
Zijiong Li ◽  
Xiaohui Song
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
High Capacity ◽  
Cost Effective ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Long Term Stability ◽  
Excellent Electrochemical Performance

Designing a novel, efficient, and cost-effective nanostructure with the advantage of robust morphology and outstanding conductivity is highly promising for the electrode materials of high-performance electrochemical storage device. In this paper, a series of honeycombed perovskite-type Sr-doped LaNiO3 nanosheets with abundant porous structure were successfully synthesized by accurately controlling the Sr-doped content. The study showed that the optimal LSNO-0.4 (La0.6Sr0.4NiO3-δ) electrode exhibited excellent electrochemical performance, which showed a high capacity of 115.88 mAh g−1 at 0.6 A g−1. Furthermore, a hybrid supercapacitor device (LSNO//AC) based on LSNO-0.4 composites and activated carbon (AC) showed a high energy density of 17.94 W h kg−1, a high power density of 1600 W kg−1, and an outstanding long-term stability with 104.4% capacity retention after 16,000 cycles, showing an excellent electrochemical performance and a promising application as an electrode for energy storage.

Polyaniline Grafted Amino-Functionalized Graphene Nanocomposite with Excellent Electrochemical Performance for Supercapacitor Electrode Materials

2014 ◽  
Vol 789 ◽  
pp. 12-17
Author(s):  
Yu Liu ◽  
Xin Yan Su ◽  
Shan Yi Guang ◽  
Hong Yao Xu
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Oxidative Polymerization ◽  
Graphene Sheets ◽  
Functionalized Graphene ◽  
Supercapacitor Electrode ◽  
Sem Images ◽  
Excellent Electrochemical Performance ◽  
Vis Spectroscopy ◽  
Supercapacitor Electrode Materials

The amino-functionalized graphene/polyaniline nanocomposites (AGNS/PANI) were fabricated through in-situ chemical oxidative polymerization of aniline in the presence of amino-functionalized graphene sheets (AGNS). FTIR, UV-vis spectroscopy analyses revealed that aminophenyl groups covalently bound to the basal plane of graphene via a diazonium addition, and the polyaniline chains grafted to graphene sheets. The FE-SEM images show that PANI nanorods aligned vertically on the surface of graphene. The AGNS/PANI nanocomposite exhibits excellent electrochemical performance for supercapacitor electrode materials.

Concentration as a trigger to improve electrocatalytic activity of a Prussian blue analogue in glucose oxidation

CrystEngComm ◽  
2019 ◽  
Vol 21 (36) ◽  
pp. 5455-5460 ◽  
Author(s):  
Zhimin Zhao ◽  
Jiawei Ding ◽  
Huijie Zhou ◽  
Rongmei Zhu ◽  
Huan Pang
Keyword(s):  
Electrochemical Performance ◽  
Prussian Blue ◽  
Electrocatalytic Activity ◽  
Glucose Oxidation ◽  
Electrode Materials ◽  
Prussian Blue Analogue ◽  
Prussian Blue Analogues ◽  
Excellent Electrochemical Performance

Nickel-based Prussian blue analogues were synthesized as electrode materials for electrocatalytic glucose oxidation, and exhibited excellent electrochemical performance.

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