Electrochemical properties of the carbon-coated lithium vanadium oxide anode for lithium ion batteries

2011 ◽  
Vol 509 (6) ◽  
pp. 3136-3140 ◽  
Author(s):  
SangMin Lee ◽  
Hyung Sun Kim ◽  
Tae-Yeon Seong
2016 ◽  
Vol 724 ◽  
pp. 87-91 ◽  
Author(s):  
Chang Su Kim ◽  
Yong Hoon Cho ◽  
Kyoung Soo Park ◽  
Soon Ki Jeong ◽  
Yang Soo Kim

We investigated the electrochemical properties of carbon-coated niobium dioxide (NbO2) as a negative electrode material for lithium-ion batteries. Carbon-coated NbO2 powders were synthesized by ball-milling using carbon nanotubes as the carbon source. The carbon-coated NbO2 samples were of smaller particle size compared to the pristine NbO2 samples. The carbon layers were coated non-uniformly on the NbO2 surface. The X-ray diffraction patterns confirmed that the inter-layer distances increased after carbon coating by ball-milling. This lead to decreased charge-transfer resistance, confirmed by electrochemical impedance spectroscopy, allowing electrons and lithium-ions to quickly transfer between the active material and electrolyte. Electrochemical performance, including capacity and initial coulombic efficiency, was therefore improved by carbon coating by ball-milling.


2014 ◽  
Vol 259 ◽  
pp. 92-97 ◽  
Author(s):  
Pengpeng Lv ◽  
Hailei Zhao ◽  
Zhipeng Zeng ◽  
Jie Wang ◽  
Tianhou Zhang ◽  
...  

1999 ◽  
Vol 11 (11) ◽  
pp. 3086-3090 ◽  
Author(s):  
Jinxiang Dai ◽  
Sam F. Y. Li ◽  
Zhiqiang Gao ◽  
Kok Siong Siow

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