Mn0.5Co2.5O4 nanofibers sandwiched in graphene sheets for efficient supercapacitor electrode materials

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 103923-103929 ◽  
Author(s):  
Jinzuan Wang ◽  
Jun Yang ◽  
Tao Huang ◽  
Wenyan Yin
Keyword(s):  
Electrical Conductivity ◽  
Active Sites ◽  
Electrode Materials ◽  
Graphene Sheets ◽  
Electrochemical Performances ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

With unique sandwich-like structures, rich active sites, and boosted electrical conductivity, the Mn0.5Co2.5O4@G composite demonstrates superior electrochemical performances for supercapacitors.

A facile synthesis of Ni0.85Se@Cu2-xSe nanorods as high-performance supercapacitor electrode materials

2021 ◽  
Author(s):  
Shuling Liu ◽  
Rui Wang ◽  
Qiuting Wang ◽  
Qianhong Tian ◽  
Xian Cui
Keyword(s):  
Transition Metal ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Performances ◽  
Ni Foam ◽  
Facile Synthesis ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials ◽  
Metal Selenides

Transition-metal selenides is regarded as promising electrode materials due to their superior electrochemical performances for supercapacitors. In this study, nanorod-like hybrid of Ni0.85Se@Cu2-xSe on Ni-foam substrate is successfully synthesized via...

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.

Synthesis of NiMoO4 nanosheets on graphene sheets as advanced supercapacitor electrode materials

2016 ◽  
Vol 184 ◽  
pp. 21-24 ◽  
Author(s):  
Yongfeng Li ◽  
Jianming Jian ◽  
Liangjun Xiao ◽  
Hui Wang ◽  
Lin Yu ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Graphene Sheets ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

Solution Effect on Synthesis of Polyaniline/rGO Composite for High-Performance Supercapacitor

NANO ◽  
2017 ◽  
Vol 12 (07) ◽  
pp. 1750088 ◽  
Author(s):  
Yuxi Tao ◽  
Ziang Liu ◽  
Xue-Zhi Song ◽  
Ming Bao ◽  
Zhenquan Tan
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
In Situ Polymerization ◽  
Control Sample ◽  
Reduction Process ◽  
Electrochemical Performances ◽  
Supercapacitor Electrode ◽  
Modified Method ◽  
Chemical Microenvironment ◽  
Supercapacitor Electrode Materials

Polyaniline (PANI)/graphene composites have been widely investigated as supercapacitor electrode materials. However, the electrochemical performances of PANI/graphene in laboratory were much lower than the theoretical value and still far from the actual needs because the microstructure of the composite was not very uniform and contained defects such as cracks, voids and dislocation. In this paper, PANI/graphene composites were synthesized by a modified method that involved a continuous in situ polymerization-hydrothermal reduction process. The chemical microenvironment of aniline was modified with the introduction of isopropanol as an adjusting agent for PANI polymerization, resulting in the fine microstructures of PANI/graphene composites and the better effect of [Formula: see text]-doping. The specific capacitance of these PANI/rGO composites is enhanced from 537.9 to 729.4[Formula: see text]F g1 in comparison with the control sample synthesized in aqueous solution. The cycle stability is also improved from 45.1% to 68.1% capacitance retention after 1000 charge–discharge cycles at a current density of 10[Formula: see text]A g[Formula: see text]. These intriguing features make it a suitable method to improve the electrochemical performance of PANI/graphene composites for electrochemical supercapacitors.

Heterogeneous NiS/NiO multi-shelled hollow microspheres with enhanced electrochemical performances for hybrid-type asymmetric supercapacitors

2018 ◽  
Vol 6 (19) ◽  
pp. 9153-9160 ◽  
Author(s):  
Yaping Wang ◽  
Anqiang Pan ◽  
Yifang Zhang ◽  
Junrong Shi ◽  
Jiande Lin ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Hollow Microspheres ◽  
Electrochemical Performances ◽  
Hybrid Supercapacitor ◽  
Supercapacitor Electrode ◽  
Asymmetric Supercapacitors ◽  
Hybrid Type ◽  
Supercapacitor Electrode Materials

Heterogeneous NiS/NiO multi-shelled hollow microspheres exhibit excellent electrochemical performances as hybrid supercapacitor electrode materials.

scholarly journals Fabrication of high B-doped ordered mesoporous carbon with 4-hydroxyphenylborate phenolic resin for supercapacitor electrode materials

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11210-11218 ◽  
Author(s):  
Yan Zhang ◽  
Fengsong Qi ◽  
Yujian Liu
Keyword(s):  
Mesoporous Carbon ◽  
Phenolic Resin ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Electrochemical Performances ◽  
Ordered Structure ◽  
Supercapacitor Electrode ◽  
Boron Doped ◽  
Ordered Mesoporous ◽  
Supercapacitor Electrode Materials

The HPB-OMCs, with 3.96 wt% boron-doped and well-ordered structure, show a much high specific capacitance of 183 F g−1 at the current density of 1 A g−1 and ideal electrochemical performances.

scholarly journals Graphene-Based Materials for Supercapacitor

2021 ◽  
Author(s):  
Abu Jahid Akhtar
Keyword(s):  
Electrical Conductivity ◽  
Energy Storage ◽  
Mechanical Behaviour ◽  
Electrode Materials ◽  
Two Dimensional ◽  
Supercapacitor Electrode ◽  
Graphene Layers ◽  
Ideal Candidate ◽  
Energy Storage Applications ◽  
Supercapacitor Electrode Materials

Graphene, a one-atomic-thick film of two-dimensional nanostructure, has piqued the attention of researchers due to its superior electrical conductivity, large surface area, good chemical stability, and excellent mechanical behaviour. These extraordinary properties make graphene an appropriate contender for energy storage applications. However, the agglomeration and re-stacking of graphene layers due to the enormous interlayer van der Waals attractions have severely hampered the performance of supercapacitors. Several strategies have been introduced to overcome the limitations and established graphene as an ideal candidate for supercapacitor. The combination of conducting polymer (CP) or metal oxide (MO) with graphene as electrode material is expected to boost the performance of supercapacitors. Recent reports on various CP/graphene composites and MO/graphene composites as supercapacitor electrode materials are summarised in this chapter, with a focus on the two basic supercapacitor mechanisms (EDLCs and pseudocapacitors).

Sign in / Sign up

Export Citation Format

Share Document