TY - JOUR
T1 - Role of Hydrothermal parameters on phase purity of orthorhombic LiMnO2 for use as cathode in Li ion battery
AU - Li, Keyan
AU - Shua, Fenfen
AU - Zhang, Jiawei
AU - Chen, Kunfeng
AU - Xue, Dongfeng
AU - Guo, Xinwen
AU - Komarneni, Sridhar
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant nos. 51125009 , 91434118 ), the Fundamental Research Funds for the Central Universities (Grant no. DUT13LK17 ), the Scientific Research Fund of Liaoning Provincial Education Department (Grant no. L2013030 ), the Open Project of State Key Laboratory of Rare Earth Resources Utilization (Grant no. RERU2013013 ), and the Hundred Talents Program of Chinese Academy of Sciences .
Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Orthorhombic LiMnO2 (o-LiMnO2) was prepared under hydrothermal conditions using sol-gel derived Mn2O3 and LiOH as precursors and the effects of hydrothermal reaction parameters such as reaction temperature and LiOH and Mn2O3 concentrations on the phase purity of o-LiMnO2 were studied. The as-prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and galvanostatic charge-discharge tests. Phase purity of o-LiMnO2 was affected by hydrothermal temperature and LiOH and Mn2O3 concentrations. High LiOH concentration facilitated the synthesis of pure phase o-LiMnO2. Low reaction temperature, lower than 140 °C, did not lead to the formation of pure phase of o-LiMnO2. Galvanostatic charge-discharge test results showed that pure o-LiMnO2 had larger discharge capacity than the mixed phases of o-LiMnO2 and Li2MnO3. However, the cycling performance of the mixed phases of o-LiMnO2 with Li2MnO3 was found to be better than that of pure o-LiMnO2.
AB - Orthorhombic LiMnO2 (o-LiMnO2) was prepared under hydrothermal conditions using sol-gel derived Mn2O3 and LiOH as precursors and the effects of hydrothermal reaction parameters such as reaction temperature and LiOH and Mn2O3 concentrations on the phase purity of o-LiMnO2 were studied. The as-prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and galvanostatic charge-discharge tests. Phase purity of o-LiMnO2 was affected by hydrothermal temperature and LiOH and Mn2O3 concentrations. High LiOH concentration facilitated the synthesis of pure phase o-LiMnO2. Low reaction temperature, lower than 140 °C, did not lead to the formation of pure phase of o-LiMnO2. Galvanostatic charge-discharge test results showed that pure o-LiMnO2 had larger discharge capacity than the mixed phases of o-LiMnO2 and Li2MnO3. However, the cycling performance of the mixed phases of o-LiMnO2 with Li2MnO3 was found to be better than that of pure o-LiMnO2.
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U2 - 10.1016/j.ceramint.2015.01.116
DO - 10.1016/j.ceramint.2015.01.116
M3 - Article
AN - SCOPUS:84925168613
SN - 0272-8842
VL - 41
SP - 6729
EP - 6733
JO - Ceramics International
JF - Ceramics International
IS - 5
ER -