The Influence of Surface Chemistry on the Rate Capability of LiNi[sub 0.5]Mn[sub 0.5]O[sub 2] for Lithium Rechargeable Batteries
- 1 January 2010
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 13 (11) , A158-A161
Abstract
Subsequent annealing at enhances the rate capability of , delivering 180 mAh/g at and 8C rate compared to 50 mAh/g of quenched from . Although Rietvled refinement analyses of X-ray diffraction (XRD) data showed that there were no significant changes in the lattice parameters and cation distributions of the layered structure before and after annealing, XRD and X-ray photoelectron spectroscopy revealed that annealing significantly reduced surface impurity phases such as lithium carbonate and -containing species. The influence of surface chemistry changes on the rate capability of was discussed.Keywords
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