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 | Zendy

Naoaki Yabuuchi | Zendy; YiChun Lu | Zendy; Azzam N. Mansour | Zendy; Tadashi Kawaguchi | Zendy; Yang ShaoHorn | Zendy

Open Access

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

Author(s) -

Naoaki Yabuuchi,

YiChun Lu,

Azzam N. Mansour,

Tadashi Kawaguchi,

Yang ShaoHorn

Publication year - 2010

Publication title -

electrochemical and solid-state letters

Language(s) - English

Resource type - Journals

eISSN - 1944-8775

pISSN - 1099-0062

DOI - 10.1149/1.3479664

Subject(s) - x ray photoelectron spectroscopy , annealing (glass) , materials science , impurity , diffraction , lithium carbonate , analytical chemistry (journal) , chemical engineering , ion , chemistry , metallurgy , optics , environmental chemistry , organic chemistry , physics , ionic bonding , engineering

Subsequent annealing at Formula enhances the rate capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2], delivering 180 mAh/g at 55[degrees]C and 8C rate compared to 50 mAh/g of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] quenched from 1000[degrees]C . 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 Mn[superscript +3]-containing species. The influence of surface chemistry changes on the rate capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] was discussed.United States. Dept. of Energy (Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the DOE DE-AC03-76SF00098

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