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Citation: TANG Zhi-Yuan, ZHANG Na, LU Xing-He, HUANG Qing-Hua. Characterizations of Spinel LiMn_2－xZr_xO₄ Cathode for Lithium-ion Batteries[J]. Acta Physico-Chimica Sinica, ;2005, 21(01): 89-92. doi: 10.3866/PKU.WHXB20050118 shu

Characterizations of Spinel LiMn_2－xZr_xO₄ Cathode for Lithium-ion Batteries

1.
Department of Applied Chemistry, School of Chemical Engineering and Technology, Tianjin University, Tianjin　300072

Received Date: 19 May 2004
Available Online: 15 January 2005

Modified spinel lithium manganate with zirconium doped LiMn2－xZrxO4 (x= 0, 0.01, 0.02, 0.04, 0.06, 0.08, 0.10) used for cathode of lithium-ion batteries was prepared by solid-state method. The structure and morphology of as-prepared cathode materials were characterized by XRD and ESEM (environment scanning electron micrograph). The effects of the zirconium doping on improving the performances of spinel materials were analyzed in terms of the crystal structure, charge-discharge curves and cycle performances. The results showed that the modified materials had better cycle performances without significant degradation of capacity when the doping value x was less than 0.06,and LiMn1.98Zr0.02O4 was the best compound with a capacity of 113.8 mA•h•g－1 after 50 cycles.
- Lithium-ion batteries;Cathode material;Spinel;Zr-dopants
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沈阳化工大学材料科学与工程学院沈阳 110142

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Characterizations of Spinel LiMn2－xZrxO4 Cathode for Lithium-ion Batteries

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通讯作者: 陈斌, bchen63@163.com

Characterizations of Spinel LiMn_2－xZr_xO₄ Cathode for Lithium-ion Batteries