A simple and versatile method for preparation of novel sodium intercalated (NH4)2V6O16 is developed via a simple hydrothermal route. It is found that ammonium sodium vanadium bronze displays higher discharge capacity and better rate cyclic stability than ammonium vanadium bronze as lithium-ion battery cathode material because of smaller charge transfer resistance, which would favor superior discharge capacity and rate performance.
Keywords: Ammonium metavanadate; Bi-cation; Cathode; Hydrothermal; Intercalation; Oxalic acid; Raman; Sodium nitrate; Sodium-ion battery; Vanadium bronze.
Crown Copyright © 2013. Published by Elsevier Inc. All rights reserved.