Self-standing positive electrodes of oxidized few-walled carbon nanotubes for light-weight and high-power lithium batteries

2012 ◽  
Vol 5 (1) ◽  
pp. 5437-5444 ◽  
Author(s):  
Seung Woo Lee ◽  
Betar M. Gallant ◽  
Youngmin Lee ◽  
Noboru Yoshida ◽  
Dong Young Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Power ◽  
Lithium Batteries ◽  
Light Weight ◽  
Positive Electrodes ◽  
Walled Carbon Nanotubes

Inelastic Deformations in Multi-Walled Carbon Nanotubes

1999 ◽  
Vol 593 ◽  
Author(s):  
D. Tekleab ◽  
R. Czerw ◽  
A. Rubio ◽  
P.M. Ajayan ◽  
D.L. Carroll
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
High Power ◽  
Multiwalled Carbon ◽  
Ultrasonic Agitation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Insight Into

ABSTRACTWe report the use of high power ultrasonic agitation to create inelastic deformations in multiwalled carbon nanotubes. Using STM coupled with TEM we show that this damage can range from kinking to breaking of continuous tube walls into segments. Such deformed tubes provide an insight into the role of re-hybridization in the electrical and mechanical properties of tubes.

CNT-CoO Complex Conductive Agent for the Positive Electrodes of MH/Ni Batteries

2009 ◽  
Vol 610-613 ◽  
pp. 488-491
Author(s):  
Jian Bo Wu ◽  
Yong Feng Yuan ◽  
Wei Ping Chen
Keyword(s):  
Carbon Nanotubes ◽  
Discharge Voltage ◽  
Conductive Network ◽  
Performance Tests ◽  
High Current ◽  
Positive Electrodes ◽  
Transfer Capability ◽  
Multi Walled Carbon Nanotubes ◽  
Conductive Agent ◽  
Walled Carbon Nanotubes

CoO was usually added to the positive electrodes of MH/Ni batteries as the conductive agent. In this paper, well crystallized multi-walled carbon nanotubes (CNTs) with diameter about 10 nm were added to the positive electrodes of MH/Ni batteries together with CoO. During the process of transformation from CoO to CoOOH, a complex conductive network was created with CNTs as the frame. Because of the high conductivity and the excellent tension characteristics of CNTs, the charge-transfer capability of the electrode was improved and the integrality of the complex conductive network was enhanced. The electrochemical measurements indicated that the impedance of the electrode with CNT-CoO complex conductive agent was lessened compared to the electrode with simple CoO agent. Performance tests of the sealed batteries showed that the positive electrodes with CNT-CoO complex conductive agent exhibited higher discharge voltage, improved capacity, modified discharge stability and prolonged lifespan, especially at high current rates.

Correction to High-Power and High-Energy-Density Flexible Pseudocapacitor Electrodes Made from Porous CuO Nanobelts and Single-Walled Carbon Nanotubes

ACS Nano ◽  
2011 ◽  
Vol 5 (6) ◽  
pp. 5280-5280 ◽  
Author(s):  
Xiaojun Zhang ◽  
Wenhui Shi ◽  
Jixin Zhu ◽  
Daniel Julian Kharistal ◽  
Weiyun Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Density ◽  
High Power ◽  
Single Walled Carbon Nanotubes ◽  
High Energy ◽  
High Energy Density ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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