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Open AccessArticle

Smoothing the Surface and Improving the Electrochemical Properties of NaxMnO2 by a Wet Chemical Method

1
School of materials and energy, Guangdong University of Technology, Guangzhou 510006, China
2
School of Physics and optoelectronic engineering, Guangdong University of Technology, Guangzhou 510006, China
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Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 246; https://doi.org/10.3390/nano10020246
Received: 8 January 2020 / Revised: 22 January 2020 / Accepted: 25 January 2020 / Published: 30 January 2020
NaxMnO2 (NMO) is treated by a wet chemical method in this paper. The treated NMO can form a copper oxide coating layer, and some of the coating layer can be peeled off, smoothing the surface of particles. Electrochemical measurement shows that treated NMO can maintain 72.6% of its specific capacity after 300 cycles, which is better than the 58.7% specific capacity of untreated NMO materials. Additionally, the ratio of capacity remaining rate can be improved from an initial 87% to 99.5%. So, this wet chemical method is available to smooth the electrode surface and reduce the internal impedance, and thus to effectively improve electrochemical performance during the battery cycle.
Keywords: NaxMnO2 (NMO); wet chemical method; surface; electrochemical properties NaxMnO2 (NMO); wet chemical method; surface; electrochemical properties
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MDPI and ACS Style

Zhao, S.; Lin, Z.; Wu, F.; Xiao, F.; Xu, J. Smoothing the Surface and Improving the Electrochemical Properties of NaxMnO2 by a Wet Chemical Method. Nanomaterials 2020, 10, 246.

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