Analytical Science and Technology (분석과학)
- Volume 8 Issue 4
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- Pages.583-590
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- 1995
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- 1225-0163(pISSN)
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- 2288-8985(eISSN)
Surface Characterization of Carbon Fibers as Anode Materials for Li Secondary Batteries
- Takamura, Tsutomu (Department of Chemistry, College of Science, Rikkyo University) ;
- Awano, Hidekazu (Department of Chemistry, College of Science, Rikkyo University) ;
- Ura, Tetsuya (Department of Chemistry, College of Science, Rikkyo University) ;
- Ikezawa, Yasunari (Department of Chemistry, College of Science, Rikkyo University)
- Received : 1995.08.20
- Published : 1995.12.25
Abstract
Pitch-based mesophase carbon fibers prepared at different temperatures were heat-treated at temperatures lower than those of the preparation and the electrochemical Li doping/undoping characteristics were evaluated in relation to the data of IR, mass, etc. Presence of surface hydroxyls were confirmed by FTIR for lower temperature sample which showed poor anode characteristics. Upon oxidative heating, removal of surface hydroxyls took place, resulting in a remarkable improvement of the electrode characteristics. At the same time, surface roughening took place, which was confirmed by SEM and double layer capacity measurements. In situ mass spectra obesrved during the heat-treatments showed gas evolution of
Keywords
- Carbon Fiber;
- Li Secondary Battery;
- Li Doping/Undoping FTIR;
- In situ Mass;
- Surface Characterization;
- SEM