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- Cho, Jaephil
- Nano Energy Storage Material Lab.
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Correlation between local strain and cycle-life performance of AlPO4-coated LiCoO2 cathodes
- Author(s)
- Kim, Byoungsoo, Lee, Joon-Gon, Choi, Myungsuk, Cho, Jaephil, Park, Byungwoo
- Issued Date
- 2004-02
- Citation
- JOURNAL OF POWER SOURCES, v.126, no.1-2, pp.190 - 192
- Abstract
- AlPO4-coated LiCoO2 cathodes display improved cycle-life performance compared with bare LiCoO2. This is attributed to suppression of cobalt dissolution from the cathodes by the AlPO 4-nanoparticle coating. Dissolution of cobalt during cycling with a charge cut-off voltage of 4.6 V leads to structural degradation, and induces a non-uniform distribution of local strain in the cathodes. The strain in coated samples is significantly reduced after 50 cycles, and is correlated with the enhanced cycle-life performance.
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 0378-7753
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