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논문 기본 정보

자료유형
동향자료
저자정보
Kim, Eun Hee (Department of Chemical Engineering, Korea University of Technology and Education) Jung, Yongju (Department of Chemical Engineering, Korea University of Technology and Education)
저널정보
한국탄소학회 Carbon letters Carbon letters 제15권 제4호
발행연도
2014.1
수록면
277 - 281 (5page)

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A series of high capacity soft carbons with different phosphorus contents were successfully prepared by carbonizing petroleum cokes treated with hypophosphorous acid at $900^{\circ}C$. The effect of phosphorus content on the electrochemical performance of the soft carbons was extensively investigated. The P-doped soft carbons exhibited greatly enhanced discharge capacities and outstanding rate capabilities with increasing phosphorus content. In addition, the influence of temperature on the electrochemical behaviors of the soft carbons was investigated in a wide temperature range of $25^{\circ}C$ to $50^{\circ}C$. Surprisingly, the electrochemical properties of the pristine and P-doped soft carbons were highly sensitive to the operating temperature, unlike conventional graphite. The pristine and P-doped soft carbons exhibited significantly high discharge capacities of 470 and 522 mAh/g, respectively, at a high temperature of $50^{\circ}C$.

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