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Corresponding Author

Da-qiao ZHOU(hb_yang@nankai.edu.cn)

Abstract

The sub-micronmeteric Li4Ti5O12 powder material was successfully prepared through an improved solid-state synthesis process.The results of X-ray diffraction(XRD), scanning electron microscopy(SEM) and laser particle size distribution analysis showed that only a single spinel phase and a normal distribution pattern with the average size(D50) of 0.886μm could be observed. Due to the suitable partical size distribution, the Li4Ti5O12 powders showed a promising electrochemical performance. At the discharge current densities of 0.1C(16.5 mAh/g) and 5C, the discharge capacities reached 165 mAh/g and 107 mAh/g, respectively. Even at 10C, it still reached 54 mAh/g.

Keywords

lithium titanate, solid-state synthesis method, sub-micronmeter, high rate performance

Publication Date

2008-08-28

Online Available Date

2008-08-28

Revised Date

2008-03-07

Received Date

2008-01-25

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