Cathodes Properties of Phospho-olivine for Lithium Secondary Batteries
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- Okada Shigeto
- Institute of Advanced Material Study Kyushu University
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- Sawa Shoichiro
- Graduate School of Engineering Sciences Kyushu University
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- Egashira Minato
- Institute of Advanced Material Study Kyushu University
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- Yamaki Jun-Ichi
- Institute of Advanced Material Study Kyushu University
Bibliographic Information
- Other Title
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- Cathode Properties of Phospho-olivine for Lithium Secondary Batteries
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Abstract
Four types of orthorhombic olivine LiMPO_4 (M:Co, Fe, Ni, Mn) were investigated as high voltage cathode active materials for lithium secondary batteries. LiCoPO_4 exhibited the highest 4.8V discharge plateau of 100mAh/g vs. Li/Li^+ after initial charging to 5.1V and its energy density was comparable to that of layeredrocksalt LiCoO_2 (120mAh/g×4V=480mWh/g). In contrast, the open circuit voltage profile of LiFePO_4 was 160mAh/g on the 3V plateau. TG-DSC measurements showed that the thermal stability of charged Li_<1-x>CoPO_4 is better than that of fully-charged Li_<1-x>CoO_2. The chemical state of Co in LiCoPO_4 was also analyzed using HRXRF.
Journal
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- 九州大学機能物質科学研究所報告
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九州大学機能物質科学研究所報告 14 (2), 133-137, 2000-12-25
Institute of Advanced Material Study Kyushu University
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Details 詳細情報について
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- CRID
- 1390290699812251136
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- NII Article ID
- 110006177573
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- NII Book ID
- AN10060378
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- ISSN
- 09143793
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- DOI
- 10.15017/7925
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- HANDLE
- 2324/7925
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- NDL BIB ID
- 5620092
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Allowed