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Enhanced cycleability of LiMn2O4 cathodes by atomic layer deposition of nanosized-thin Al2O3 coatings

2011; Royal Society of Chemistry; Volume: 3; Issue: 4 Linguagem: Inglês

10.1039/c0nr00939c

2040-3372

Dongsheng Guan, Judith A. Jeevarajan, Ying Wang,

Advanced Battery Materials and Technologies

This report is the first effort to use atomic layer deposition method for deposition of nanosized-thin and highly conformal Al2O3 coatings onto LiMn2O4 cathodes with precise thickness-control at atomic scale. The coated cathodes exhibit significantly enhanced cycleability than bare cathodes, as the dense ALD coating protects the cathode material from severe dissolution.