The thermal behavior of a lithium-ion cell during charge and discharge was determined using an isothermal calorimeter. In order to assign the thermal characteristics of the lithium-ion cell to the cathode (LiCoO2) and the anode (graphite) material, a LiCoO2/Li cell and a graphite/Li cell were prepared. The thermal behaviors were compared with that of a lithium-ion (LiCoO2/graphite) cell. The notable thermal characteristics could be attributed to the individual electrode materials. In particular, the discontinuous thermal profiles showed good agreement with the phase change of the host structure of each electrode material. The degradation factor of commercially available lithium-ion cells was determined using these discontinuous thermal profiles as an indicator of the electrode reactions. We found that the decrease in the effective active material of the graphite is the main cause of capacity fading after cycling. (C) 2002 The Electrochemical Society.
机构:
LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Iwahori, T
Ozaki, Y
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Ozaki, Y
Funahashi, A
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Funahashi, A
Momose, H
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Momose, H
Mitsuishi, I
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Mitsuishi, I
Shiraga, S
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Shiraga, S
Yoshitake, S
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Yoshitake, S
Awata, H
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
机构:
LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Iwahori, T
Ozaki, Y
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Ozaki, Y
Funahashi, A
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Funahashi, A
Momose, H
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Momose, H
Mitsuishi, I
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LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Mitsuishi, I
Shiraga, S
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h-index: 0
机构:
LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Shiraga, S
Yoshitake, S
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h-index: 0
机构:
LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan
Yoshitake, S
Awata, H
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h-index: 0
机构:
LIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, JapanLIBES, Lithium Battery Energy Storage Technol Res Assoc, Toshima Ku, Tokyo 1700013, Japan