Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li<sub>2+2</sub><i><sub>x</sub></i>Mn<sub>1−</sub><i><sub>x</sub></i>Ti<sub>1−</sub><i><sub>x</sub></i>O<sub>4</sub>
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- KITAJOU Ayuko
- Institute for Materials Chemistry and Engineering, Kyushu University
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- TANAKA Kosuke
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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- MIKI Hidenori
- Toyota Motor Corporation
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- KOGA Hideyuki
- Toyota Motor Corporation
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- OKAJIMA Toshihiro
- Kyushu Synchrotron Light Research Center
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- OKADA Shigeto
- Institute for Materials Chemistry and Engineering, Kyushu University
Bibliographic Information
- Other Title
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- Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li₂₊₂xMn₁₋xTi₁₋xO₄
- Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li<sub>2+2</sub><i><sub>x</sub></i>Mn<sub>1−</sub><i><sub>x</sub></i>Ti<sub>1−</sub><i><sub>x</sub></i>O<sub>4</sub>
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Abstract
Although Li2MnTiO4 has a large theoretical capacity (295 mAh g−1), the cathode utilization is limited due to the mixed cation occupation in the disordered rocksalt structure. In this study, we have attempted to prepare single-phase Li2+2xMn1−xTi1−xO4 compositions (0 ≤ x ≤ 0.3) with Li excess to further improve the cathode properties of Li2MnTiO4. The rechargeable capacity of the synthesized Li2.4Mn0.8Ti0.8O4 composition was above 220 mAh g−1, which is larger than those of other disordered Li2MTiO4 (M = Ni, Co, Mn and Fe) series. Moreover, the discharge capacity of Li2.4Mn0.8Ti0.8O4 was ca. 190 mAh g−1 after the 15th cycle, and its capacity retention was 82%.
Journal
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- Electrochemistry
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Electrochemistry 84 (8), 597-600, 2016
The Electrochemical Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282681475172096
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- NII Article ID
- 130005253805
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- NII Book ID
- AN00151637
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- ISSN
- 21862451
- 13443542
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- NDL BIB ID
- 027517375
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Allowed