High supercapacitive performance of Ni(OH)2/XC-72 composite prepared by microwave-assisted method

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43164-43171 ◽  
Author(s):  
Shuihua Tang ◽  
Leping Sui ◽  
Zhen Dai ◽  
Zhentao Zhu ◽  
Haixin Huangfu
Keyword(s):  
Specific Capacitance ◽  
Network Structure ◽  
High Specific Capacitance ◽  
Conductive Network ◽  
Supercapacitive Performance ◽  
Microwave Assisted ◽  
Conductive Agent ◽  
Microwave Assisted Method

A Ni(OH)2/XC-72 composite with CNTs as a conductive agent has a unique 3-D conductive network structure and shows high specific capacitance of 1560 F g−1 at 1 A g−1.

A simple approach to prepare nickel hydroxide nanosheets for enhanced pseudocapacitive performance

RSC Advances ◽  
2014 ◽  
Vol 4 (37) ◽  
pp. 19476-19481 ◽  
Author(s):  
Anjon Kumar Mondal ◽  
Dawei Su ◽  
Shuangqiang Chen ◽  
Bing Sun ◽  
Kefei Li ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Nickel Hydroxide ◽  
High Specific Capacitance ◽  
Simple Approach ◽  
Cycling Stability ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Superior Cycling Stability

A simple microwave-assisted synthesis of Ni(OH)2 nanosheets for supercapacitors with high specific capacitance and superior cycling stability.

Low-temperature microwave-assisted hydrothermal fabrication of RGO/MnO2–CNTs nanoarchitectures and their improved performance in supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98010-98017 ◽  
Author(s):  
Jie Zhang ◽  
Hailang Zhang ◽  
Yingjun Cai ◽  
Haitao Zhang
Keyword(s):  
Low Temperature ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Microwave Assisted ◽  
Improved Performance

RGO/MnO2–CNTs nanoarchitectures have been successfully synthesized at low temperature and exhibit high specific capacitance and reversibility.

Ni–CeO2 spherical nanostructures for magnetic and electrochemical supercapacitor applications

2017 ◽  
Vol 19 (6) ◽  
pp. 4396-4404 ◽  
Author(s):  
Ramachandran Murugan ◽  
Ganesan Ravi ◽  
Gandhi Vijayaprasath ◽  
Somasundharam Rajendran ◽  
Mahalingam Thaiyan ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Microwave Assisted ◽  
Nano Structures ◽  
Electrochemical Supercapacitor ◽  
Supercapacitor Applications ◽  
Microwave Assisted Method

Ni–CeO2 spherical nano structures prepared using microwave assisted method and a specific capacitance of 577 F g−1 was achieved at 2 A g−1 in 1 M KOH.

scholarly journals Highly Effective Self-Propagating Synthesis of Lamellar ZnO-Decorated MnO2 Nanocrystals with Improved Supercapacitive Performance

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1680
Author(s):  
Luming Li ◽  
Jing Li ◽  
Hongmei Li ◽  
Li Lan ◽  
Jie Deng
Keyword(s):  
Electrical Conductivity ◽  
Specific Capacitance ◽  
Doping Level ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Electrode System ◽  
Constant Current ◽  
Supercapacitive Performance ◽  
Zno Doping

A series of MOx (M = Co, Ni, Zn, Ce)-modified lamellar MnO2 electrode materials were controllably synthesized with a superfast self-propagating technology and their electrochemical practicability was evaluated using a three-electrode system. The results demonstrated that the specific capacitance varied with the heteroatom type as well as the doping level. The low ZnO doping level was more beneficial for improving electrical conductivity and structural stability, and Mn10Zn hybrid nanocrystals exhibited a high specific capacitance of 175.3 F·g−1 and capacitance retention of 96.9% after 2000 cycles at constant current of 0.2 A·g−1. Moreover, XRD, SEM, and XPS characterizations confirmed that a small part of the heteroatoms entered the framework to cause lattice distortion of MnO2, while the rest dispersed uniformly on the surface of the carrier to form an interfacial collaborative effect. All of them induced enhanced electrical conductivity and electrochemical properties. Thus, the current work provides an ultrafast route for development of high-performance pseudocapacitive energy storage nanomaterials.

Enhanced Supercapacitive Performance of Carbonized Polyaniline by Conducting Wrapping

NANO ◽  
2015 ◽  
Vol 10 (08) ◽  
pp. 1550116 ◽  
Author(s):  
Zhihong Luo ◽  
Xiangqun Zhuge ◽  
Yuzhen Zhao ◽  
Meixiao He ◽  
Lihua Zhu ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Specific Capacitance ◽  
Weight Ratio ◽  
Electrochemical Measurement ◽  
Conductive Network ◽  
Functionalized Carbon Nanotubes ◽  
Supercapacitive Performance ◽  
Transmission Electron ◽  
Measurement Results ◽  
Charge Discharge

Functionalized carbon nanotubes (MWNT–COOH) was selected as conducting wrapping agent to prepare composites of MWNT–COOH and carbonized polyaniline (C–PANI), to improve the supercapacitive performance of C–PANI. The morphology was characterized by scanning electron microscope and transmission electron microscope which showed that C–PANI was trapped in the conductive network of MWNT–COOH. The electrochemical measurement results indicated the increased specific capacitance and enhanced cycling stability of C–PANI with the addition of MWNT–COOH. When the weight ratio of C–PANI and MWNT–COOH was 4:1, the specific capacitance of the composites was 149 F[Formula: see text]g[Formula: see text], and the capacitance retention was 93.7% after 1000 charge–discharge cycling.

MXene titanium carbide with high specific capacitance fabricated by microwave-assisted selective etching

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
Qiong Wu ◽  
Yiqiao Ren ◽  
Pengfei Li ◽  
Yihao Wang ◽  
Zhanxin Yang ◽  
...  
Keyword(s):  
Titanium Carbide ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Selective Etching ◽  
Microwave Assisted

Poly(aniline-co-pyrrole)-coated Ni-doped manganese dioxide as electrode materials for supercapacitors

2020 ◽  
Vol 13 (02) ◽  
pp. 2051007
Author(s):  
Jie Dong ◽  
Qinghao Yang ◽  
Qiuli Zhao ◽  
Zhenzhong Hou ◽  
Yue Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Manganese Dioxide ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Mass Ratio ◽  
Scan Rate ◽  
Poly Aniline ◽  
Inorganic And Organic

Electrode materials with a high specific capacitance, outstanding reversibility and excellent cycle stability are constantly pursued for supercapacitors. In this paper, we present an approach to improve the electrochemical performance by combining the advantages of both inorganic and organic. Ni-MnO2/PANi-co-PPy composites are synthesized, with the copolymer of aniline/pyrrole being coated on the surface of Ni-doped manganese dioxide nanospheres. The inorganic–organic composite enables a substantial increase in its specific capacitance and cycle stability. When the mass ratio of Ni-MnO2 to aniline and pyrrole mixed monomer is 1:5, the composite delivers high specific capacitance of 445.49[Formula: see text]F/g at a scan rate of 2[Formula: see text]mV/s and excellent cycle stability of 61.65% retention after 5000 cycles. The results indicate that the Ni-MnO2/PANi-co-PPy composites are promising electrode materials for future supercapacitors application.

Sign in / Sign up

Export Citation Format

Share Document