scholarly journals The Preparation of Carbon Nanotube/MnO2Composite Fiber and Its Application to Flexible Micro-Supercapacitor

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Li Li ◽  
Chen Chen ◽  
Jing Xie ◽  
Zehuai Shao ◽  
Fuxin Yang
Keyword(s):  
Cyclic Voltammetry ◽  
Carbon Nanotube ◽  
Specific Capacitance ◽  
Ultrathin Films ◽  
Electronic Devices ◽  
High Specific Capacitance ◽  
Composite Fiber ◽  
Potential Applications ◽  
Cyclic Voltammetry Method ◽  
Fiber Electrode

In recent years, flexible electronic devices pursued for potential applications. The design and the fabrication of a novel flexible nanoarchitecture by coating electrical conductive MWCNT fiber with ultrathin films of MnO2to achieve high specific capacitance, for micro-supercapacitors electrode applications, are demonstrated here. The MWCNT/MnO2composite fiber electrode was prepared by the electrochemical deposition which was carried out through using two different methods: cyclic voltammetry and potentiostatic methods. The cyclic voltammetry method can get “crumpled paper ball” morphology MnO2which has bigger specific capacitances than that achieved by potentiostatic method. The flexible micro-supercapacitor was fabricated by twisting two aligned MWCNT fibers and showed an area specific capacitance of 2.43 mF/cm2. The flexible micro-supercapacitors also enable promising applications in various fields.

Facile synthesis of exfoliated Co–Al LDH–carbon nanotube composites with high performance as supercapacitor electrodes

2014 ◽  
Vol 16 (33) ◽  
pp. 17936-17942 ◽  
Author(s):  
Lei Yu ◽  
Nannan Shi ◽  
Qi Liu ◽  
Jun Wang ◽  
Bin Yang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Facile Synthesis ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

A novel sandwich-like structured Co–Al LDH–CNT composite has been successfully synthesized. The as-prepared Co–Al LDHs–CNTs composite exhibites a high specific capacitance and a good cycle stability over 2000 cycles

A high performance asymmetric supercapacitor based on in situ prepared CuCo2O4 nanowires and PPy nanoparticles on a two-ply carbon nanotube yarn

2018 ◽  
Vol 47 (47) ◽  
pp. 17146-17152 ◽  
Author(s):  
Xiao Liang ◽  
Qiufan Wang ◽  
Yun Ma ◽  
Daohong Zhang
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Specific Capacitance ◽  
High Performance ◽  
Negative Electrode ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor

A two-ply CNT yarn asymmetric supercapacitor was fabricated by assembling a CuCo2O4 nanowire positive electrode and a PPy nanoparticle negative electrode. The full cell exhibits a high specific capacitance of 59.55 mF cm−2 and a high energy density of 0.02 mW h cm−2.

Three-dimensional α-Fe2O3/carbon nanotube sponges as flexible supercapacitor electrodes

2015 ◽  
Vol 3 (42) ◽  
pp. 20927-20934 ◽  
Author(s):  
Xiaoping Cheng ◽  
Xuchun Gui ◽  
Zhiqiang Lin ◽  
Yongjia Zheng ◽  
Ming Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
Three Dimensional ◽  
High Specific Capacitance ◽  
Flexible Supercapacitor

The porous, flexible and compressible CNT@Fe2O3 sponges show high specific capacitance (>300 F g−1).

Constructing hierarchical dandelion-like molybdenum–nickel–cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors

2017 ◽  
Vol 5 (40) ◽  
pp. 21153-21160 ◽  
Author(s):  
Juan Sun ◽  
Qichong Zhang ◽  
Xiaona Wang ◽  
Jingxin Zhao ◽  
Jiabin Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Nanowire Arrays ◽  
Ternary Oxide ◽  
Asymmetric Supercapacitors ◽  
Carbon Nanotube Fiber ◽  
Nickel Cobalt

The fabricated electrode delivers high specific capacitance and is applied to fiber-shaped asymmetric supercapacitors.

High performance of stretchable carbon nanotube–polypyrrole fiber supercapacitors under dynamic deformation and temperature variation

2016 ◽  
Vol 4 (23) ◽  
pp. 9311-9318 ◽  
Author(s):  
F. M. Guo ◽  
R. Q. Xu ◽  
X. Cui ◽  
L. Zhang ◽  
K. L. Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
Temperature Variation ◽  
High Performance ◽  
Dynamic Deformation ◽  
High Specific Capacitance ◽  
Capacitive Performance ◽  
Dynamic Stretching

Fiber-shaped supercapacitors (FSSCs) are fabricated from CNT–PPy composite networks. The FSSCs exhibit outstanding capacitive performance with a high specific capacitance of 69 F g−1. The FSSCs are stable and reliable under static and dynamic stretching, and wide temperature variation.

Biocatalytic approach as alternative to chemical synthesis of polyaniline/carbon nanotube composite with enhanced electrochemical properties

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60372-60375 ◽  
Author(s):  
Grigory V. Otrokhov ◽  
Galina P. Shumakovich ◽  
Maria E. Khlupova ◽  
Irina S. Vasil'eva ◽  
Igor B. Kaplan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Chemical Synthesis ◽  
Electrochemical Properties ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
High Conductivity ◽  
Carbon Nanotube Composite

Preadsorption of aniline dimer on the surface of MWCNTs enabled a composite with better morphology, high conductivity, high specific capacitance and long cycling stability to be fabricated.

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.

scholarly journals Facile fabrication of hierarchical film composed of Co(OH)2@Carbon nanotube core/sheath nanocables and its capacitive performance

RSC Advances ◽  
2018 ◽  
Vol 8 (67) ◽  
pp. 38550-38555 ◽  
Author(s):  
Hua Fang ◽  
Gaoyun Chen ◽  
Lixia Wang ◽  
Ji Yan ◽  
Linsen Zhang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Cycle Life ◽  
Capacitive Performance ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Facile Fabrication

A uniform Co(OH)2 sheath was anchored on the surface of a conductive CNT by a facile strategy, exhibiting comparatively high specific capacitance and outstanding long cycle life stability.

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