Sodium vanadium oxide:a new material for high-performance symmetric sodium-ion batteries

Hartung, Steffen and Bucher, Nicolas and Nair, Vivek Sahadevan and Ling, Cheah Yan and Wang, Yuxi and Hoster, Harry E. and Srinivasan, Madhavi (2014) Sodium vanadium oxide:a new material for high-performance symmetric sodium-ion batteries. ChemPhysChem, 15 (10). pp. 2121-2128. ISSN 1439-4235

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Room-temperature sodium-ion batteries have the potential to become the technology of choice for large-scale electrochemical energy storage because of the high sodium abundance and low costs. However, not many materials meet the performance requirements for practical applications. Here, we report a novel sodium-ion battery electrode material, Na2.55V6O16 center dot 0.6H(2)O, that shows significant capacities and stabilities at high current rates up to 800 mA g(-1). X-ray photoelectron spectroscopy measurements are carried out to better understand the underlying reactions. Moreover, due to the different oxidation states of vanadium, this material can also be employed in a symmetric full cell, which would decrease production costs even further. For these full cells, capacity and stability tests are conducted using various cathode: anode mass ratios.

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27 Jan 2015 09:52
Last Modified:
22 Nov 2022 01:30