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논문 기본 정보

자료유형
학술저널
저자정보
Doh, Chil-Hoon (Battery Research Group, Korea Electrotechnology Research Institute) Moon, Seong-In (Battery Research Group, Korea Electrotechnology Research Institute) Yun, Mun-Soo (Battery Research Group, Korea Electrotechnology Research Institute) Jin, Chang-Soo (Battery Research Group, Korea Electrotechnology Research Institute) Jin, Bong-Soo (Battery Research Group, Korea Electrotechnology Research Institute) Eom, Seung-Wook (Battery Research Group, Korea Electrotechnology Research Institute)
저널정보
한국탄소학회 Carbon science Carbon science 제1권 제1호
발행연도
2000.1
수록면
36 - 40 (5page)

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초록· 키워드

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The initial irreversible capacity (IIC) of a hard carbon during the charge/discharge reaction is strongly affected by both the initial irreversible capacity on the carbon surface $(IIC_S)$ and the initial irreversible lithium insertion into carbon $(IIC_B)$. The initial coulombic efficiency of the insertion and the desertion of lithium (IIE) can be used as a performance to classify $IIC_B$ of the carbon. The $IIC_B$ was proportional to the specific discharge capacity with a slope, $IIE^{-1}$ - 1. The IIE of hard carbon had four regions. $IIE_A$ for the region of 0~95 mAh/g of $Q_{D1}$ was 60.2%. $IIE_B$ and $IIE_C$ for the regions of 95~172 mAh/g and 172~308 mAh/g had 84.9% and 91.5%, respectively. $IIE_D$ was appeared above 308 mAh/g. But, the $IIE_D$ was reduced to 82.1% compared with $IIE_C$. These IIE might be corresponding to lithium desertion from carbon at the region of 0~172 mAh/g range, lithium desertion from the micropore of carbon at the region of 172~308 mAh/g range, and to the lithium stripping of the plated lithium for the region above 308 mAh/g, respectively.

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