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Citation: CHANG Zhao-Rong, CHEN Zhong-Jun, WU Feng, TANG Hong-Wei, ZHU Zhi-Hong. Synthesis of LiNi_1/3Co_1/3Mn_1/3O₂ Cathode Material by Eutectic Molten Salt LiOH-LiNO₃[J]. Acta Physico-Chimica Sinica, ;2008, 24(03): 513-519. doi: 10.3866/PKU.WHXB20080329 shu

Synthesis of LiNi_1/3Co_1/3Mn_1/3O₂ Cathode Material by Eutectic Molten Salt LiOH-LiNO₃

1.
College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, Henan Province, P. R. China; College of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100080, P. R. China

Received Date: 7 September 2007
Available Online: 21 January 2008

The powder of LiNi1/3Co1/3Mn1/3O2 were prepared directly without artificial grinding and washing by a eutectic molten-salt mixture (0.38LiOH·H2O-0.62LiNO3) method. According to this method, the eutectic molten-salt mixture was self-mixed with precursor thoroughly at low temperature, and then sintered at a certain temperature. The tap-density of the powder obtained was 2.87 g·cm-3. The well-layered 琢-NaFeO2 structure and regular morphology were confirmed by X-ray diffraction (XRD) and scanning electronmicroscopy (SEM).XPSstudies showed that the predominant oxidation states of Ni, Co, andMn in the compound were 2+, 3+, and 4+, respectively. Cathodic behaviour was examined by charge-discharge cycling. The synthesized powder showed a reversible capacity of 160 mAh·g -1 at a specific current of 0.2C in the rang 3.0-4.3 V up to 50 cycles without noticeable capacity-fading.
- Eutectic molten salt; Cathode material; XPS; LiNi1/3Co1/3Mn1/3O2
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Synthesis of LiNi1/3Co1/3Mn1/3O2 Cathode Material by Eutectic Molten Salt LiOH-LiNO3

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通讯作者: 陈斌, bchen63@163.com

Synthesis of LiNi_1/3Co_1/3Mn_1/3O₂ Cathode Material by Eutectic Molten Salt LiOH-LiNO₃