Synthesis and Electrochemical Performance of Layerd NaNi0.5Mn0.5O2 as Cathodes for Sodium Ion Batteries

Title
Synthesis and Electrochemical Performance of Layerd NaNi0.5Mn0.5O2 as Cathodes for Sodium Ion Batteries
Authors
이용호이지은김동원이중기최원창
Issue Date
2013-11
Publisher
International Conference on Advanced Electromaterials 2013 (ICAE 2013)
Abstract
The layered NaMO2 which is analogous to layered LiMO2 (M=transion metal) has received considerable attention recently as the cathode material of rechargeable sodium battery applications. The layered-structured NaNi0.5Mn0.5O2 material synthesized at 900oC with pelletization using co-precipitation method exhibits the high crystallinity without any impurity phases. In galvanostatic cycling test, NaNi0.5Mn0.5O2 cathodes with cut-off voltages of 2.2-3.8 and 2.2-4.5 V, respectively, deliver the initial discharge capacity about 130 mAh/g and 173 mAh/g. Also, cycle test was successfully carried out at 0.05C rate between 2.2 and 3.85 V with the capacity retention of 65.2% after 50cycles. The synthesized samples were evaluated by various analysis techniques such as X-ray diffraction, Field Emission Scanning Electron Microscopy and X-ray photoelectron spectroscopy.
URI
http://pubs.kist.re.kr/handle/201004/46988
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KIST Publication > Conference Paper
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