S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Electrochemical and thermal properties of NASICON structured Na 3V2(PO4)3 as a sodium rechargeable battery cathode: A combined experimental and theoretical study
- Issue Date
- Journal of the Electrochemical Society, Vol.159 No.9, pp.A1393-A1397
- A combined experimental and computational study on Na3V2(PO4)(3) has been carried out to investigate its structural, electrochemical, and thermal properties as a sodium battery cathode. The synthesized material by a sol-gel process was well-indexed to the R-3m space group in the framework of a rhombohedral NASICON structure. Galvanostatic measurements indicate that at 3.4 V vs. Na/Na+, 1.4 Na reversibly reacts with each Na3V2(PO4)(3), which corresponds to a specific capacity of 84.8 mAh/g. Moreover, this material shows excellent rate capabilities and good cycling performance. Ex-situ XRD analyzes indicate that this material reacts with Na ions based on a reversible two-phase reaction. Thermal analyzes employing TGA/DSC and In-situ XRD at various temperatures show that this material maintains good thermal stability up to 450 degrees C even in the desodiated state. The promising electrochemical and thermal properties suggest that this material with the well-defined NASICON structure is a promising cathode for large-scale sodium rechargeable batteries. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.015209jes] All rights reserved.
- Files in This Item: There are no files associated with this item.