Heterostructure NiS2/NiCo2S4 nanosheets array on carbon nanotubes sponge electrode with high specific capacitance for supercapacitors

2022 ◽  
Vol 518 ◽  
pp. 230763
Author(s):  
Jinpan Xiao ◽  
Hao Tong ◽  
Fengqiao Jin ◽  
Daxiong Gong ◽  
Xudong Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Specific Capacitance ◽  
High Specific Capacitance

scholarly journals Dissected carbon nanotubes functionalized by 1-hydroxyanthraquinone for high-performance asymmetric supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (76) ◽  
pp. 48341-48353 ◽  
Author(s):  
Xia Yang ◽  
Yuying Yang ◽  
Quancai Zhang ◽  
Xiaotong Wang ◽  
Yufeng An ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Covalent Modification ◽  
Asymmetric Supercapacitors ◽  
Reduced Graphene

1-Hydroxyanthraquinone (HAQ) is selected to functionalize the dissected carbon nanotubes (rDCNTs) with reduced graphene oxide layers through non-covalent modification. The composite achieves high specific capacitance and ultrahigh rate capability.

Facile synthesis of a Co3O4@carbon nanotubes/polyindole composite and its application in all-solid-state flexible supercapacitors

2015 ◽  
Vol 3 (24) ◽  
pp. 13011-13015 ◽  
Author(s):  
Xi Zhou ◽  
Anqi Wang ◽  
Yumei Pan ◽  
Chenfei Yu ◽  
Yun Zou ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Solid State ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Facile Synthesis ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors

An all-solid-state flexible supercapacitor that achieves a high specific capacitance of 442.5 F g−1was facilely synthesized based on a Co3O4@carbon nanotubes/polyindole composite.

α-NiS grown on reduced graphene oxide and single-wall carbon nanotubes as electrode materials for high-power supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27940-27945 ◽  
Author(s):  
Ji Yan ◽  
Gregory Lui ◽  
Ricky Tjandra ◽  
Xiaolei Wang ◽  
Lathankan Rasenthiram ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
High Power ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Single Wall Carbon Nanotubes ◽  
Rate Performance ◽  
Reduced Graphene

α-NiS combined with SWNTs and graphene exhibits high specific capacitance, and excellent rate performance and cycling stability.

A New Way to Manufacture a Carbon Nanotubes Supercapacitor

2009 ◽  
Vol 79-82 ◽  
pp. 47-50
Author(s):  
Tung Feng Hsieh ◽  
Chia Chih Chuang ◽  
Ming Yang Liu ◽  
Yu Chuan Chou ◽  
Chi Min Shu
Keyword(s):  
Carbon Nanotubes ◽  
Specific Capacitance ◽  
Power Density ◽  
High Specific Capacitance ◽  
Utilization Efficiency ◽  
The Novel ◽  
Supercapacitor Electrode ◽  
Multi Walled Carbon Nanotubes ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes

A nanocomposite electrode of vertically aligned multi-walled carbon nanotubes (MWCNTs) on gold was fabricated to improve the specific capacitance and power density of the conventional supercapacitor. The novel supercapacitor built from MWCNTs and gold electrode showed a very high specific capacitance of 92.74 F/g using cyclic voltammetry (CV) at 10 mV/s, and 96.43 F/g was measured at 100 Hz. This nanocomposite electrode greatly enhanced the utilization efficiency of supercapacitor electrode material, low material cost and provided both high capacitance and power density. It was shown that the nanocomposite electrode based on vertically aligned carbon nanotube electrode had the characteristics of high specific capacitance.

Electrochemical Performance of Polypyrrole/Multi-Walled Carbon Nanotubes Composites for Supercapacitors Electrodes

2011 ◽  
Vol 399-401 ◽  
pp. 1415-1418
Author(s):  
Jing Li ◽  
Hua Qing Xie ◽  
Yang Li
Keyword(s):  
Carbon Nanotubes ◽  
Cyclic Voltammetry ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Electrical Energy ◽  
Energy Storage Devices ◽  
Multi Walled Carbon Nanotubes ◽  
The Stability ◽  
Walled Carbon Nanotubes

Nanocomposites supercapacitors electrodes are synthesized by homogeneously coating the nano-structured polypyrrole (PPy) on multi-walled carbon nanotubes (MWCNTs) via a facile electrochemical method. The capacitance properties of the composites are evaluated by cyclic voltammetry (CV) and galvanostatic charge/discharge techniques. The results show that the porous composites structure exhibit a remarkable specific capacitance of 674 F g-1 at a current density of 2 A g-1. Electrochemical experiments indicate that the high specific capacitance is associated with uniform PPy coating. Moreover, the composites present a nearly ideal rectangular shape of cyclic voltammetry characteristics. The stability of the composites electrode is also examined and only 10% capacitance decrease after 800 cycles. This technique provides a feasible solution for developing high-performance electrical energy storage devices.

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.

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