Sodium manganese oxide (NaxMnO2) has attracted much attention as cathode materials for alkaline ion battery due to the ability of the fast charge and discharge of Na+, in particular in nanoscale. We report on the synthesis of NaxMnO2 nanowires via hydrothermal synthesis route from Mn2O3 and NaOH solution. The morphological observation indicates that the obtained with diameters of about 20 nm -30 nm, length up to several micrometers were formed by this process. | Communications in Physics, Vol. 24, No. 3 (2014), pp. 233-238 DOI: INVESTIGATION OF SODIUM MANGANESE OXIDE NANOWIRES SYNTHESIZED BY HYDROTHERMAL METHOD FOR ALKALINE ION BATTERY TA ANH TAN Hanoi College of Education DANG TRAN CHIEN Hanoi University of Natural Resources and Environment DO THI PHUONG, NGUYEN THI TU OANH, DO XUAN MAI, HOANG VU CHUNG, LE HA CHI, AND PHAM DUY LONG Institute of Materials Science, Vietnam Academy of Science and Technology E-mail: longphd@ Received 25 April 2014 Accepted for publication 26 Agust 2014 Abstract. Sodium manganese oxide (Nax MnO2 ) has attracted much attention as cathode materials for alkaline ion battery due to the ability of the fast charge and discharge of Na+ , in particular in nanoscale. We report on the synthesis of Nax MnO2 nanowires via hydrothermal synthesis route from Mn2 O3 and NaOH solution. The morphological observation indicates that the obtained MnO2 nanowires with diameters of about 20 nm -30 nm, length up to several micrometers were formed by this process. The electrochemical properties of fabricated materials were investigated by means of cyclic voltammetry technique and show that sodium manganese oxide (Nax MnO2 ) is a promising material used for the alkaline ion battery. Keywords: alkali ion battery, cathode materials, MnO2 nanowires. I. INTRODUCTION In recent years, electrode materials for ion batteries are of importance due to their basic ingredients for fabrication of ion rechargeable battery. The ion rechargeable batteries are used for portable electronics, electric vehicles and storage devices and are an important component of the green energy systems including wind, solar and hydrogen energy. It is well-known that lithium ion batteries can be used for electric vehicles owing to their advantages such as large energy density. Most popular electrode materials that are currently used are lithium ion storage materials as Lix MO2 where M is the .
