1. Electrochemical lithium storage of C/Co composite as an anode material for lithium ion batteries
- Author
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Yue, Juncheng, Zhao, Xiuyun, and Xia, Dingguo
- Subjects
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ELECTROCHEMISTRY , *LITHIUM-ion batteries , *CARBON composites , *COBALT compounds , *COMPOSITE materials , *ANODES , *NANOPARTICLES , *PYROLYSIS , *PHTHALOCYANINES , *ELECTRIC conductivity - Abstract
Abstract: A novel C/Co composite with Co nanoparticles embedded in carbon matrix is synthesized firstly by pyrolysis of polymeric cobalt phthalocyanine (PcCo) at 700°C in argon atmosphere. This composite is investigated as an anode material for lithium ion batteries, indicating high tap density and excellent electrochemical performance. The C/Co electrode can retain a higher reversible capacity of over 600mAhg−1 at a current of 50mAg−1 after 40cycles and shows better rate capability and less hysteresis in comparison to carbon not containing Co. The significant improvement is attributed to the Co nanoparticles grown in-situ reaction with catalytic activity and high electrical conductivity. [Copyright &y& Elsevier]
- Published
- 2012
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