The electrochemical characteristics of high-temperature (HT) LiCoO2 (900 degrees C) and low-temperature (LT) LiCoO2 (450 degrees C) were studied. From cyclic voltammetry results, lithium intercalating into LT-LiCoO2 generates two current peaks at 3.8 and 3.3 V, respectively, which is contrast to the intercalation of lithium into HT-LiCoO2. The resistance of lithium extraction is smaller than that of lithium insertion. The diffusion coefficients of Li+ ions in LiCoO2 have an order of 10(-9) cm(2)/s.
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Mitsui Min & Smelting Co Ltd, Battery Mat Res Lab, Takehara 7250025, JapanMitsui Min & Smelting Co Ltd, Battery Mat Res Lab, Takehara 7250025, Japan
Numata, K
Yamanaka, S
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机构:Mitsui Min & Smelting Co Ltd, Battery Mat Res Lab, Takehara 7250025, Japan
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Chonbuk Natl Univ, Engn Res Inst, Div Adv Mat Engn, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South KoreaChonbuk Natl Univ, Engn Res Inst, Div Adv Mat Engn, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South Korea
Song, Myoung Youp
Rim, Ho
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ASE Korea, Paju Si 413790, Gyeonggi Do, South KoreaChonbuk Natl Univ, Engn Res Inst, Div Adv Mat Engn, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South Korea
Rim, Ho
Park, Hye Ryoung
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Chonnam Natl Univ, Sch Appl Chem Engn, Kwangju 500757, South KoreaChonbuk Natl Univ, Engn Res Inst, Div Adv Mat Engn, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South Korea