Asymmetry in anodic and cathodic polarization profile for LiFePO4 positive electrode in rechargeable Li ion battery
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- NAKAYAMA Masanobu
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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- IIZUKA Kaede
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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- SHIIBA Hiromasa
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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- BABA Shinji
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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- NOGAMI Masayuki
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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Abstract
Asymmetric kinetics in the electrochemical charge–discharge reaction has been investigated in the two-phase coexistence system at LiFePO4 positive electrodes for rechargeable Li ion batteries. The analyses of the electrochemical polarization profiles obtained by galvanostatic-pulse cycles reveals that nucleation and mass-transport is rate determining process for anodic and cathodic (charge and discharge) reaction, respectively, at high-rate conditions. We suggest that present two-phase system of LiFePO4–FePO4 forms core–shell type construction in each particle or agglomerate of particles, where LiFePO4 prefer to reside at outer shell-region of particles maybe due to smaller interfacial energy with electrolytes.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 119 (1393), 692-696, 2011
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390001205286968448
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- NII Article ID
- 130002067652
- 120006667336
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 11244713
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed