Activating vanadium's highest oxidation state in the NASICON structure

Mason, Chad W. and Gocheva, Irina and Hoster, Harry E. and Yu, Dennis Y. W. (2014) Activating vanadium's highest oxidation state in the NASICON structure. In: ECS Transactions. ELECTROCHEMICAL SOCIETY INC, pp. 41-46.

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Abstract

The capacity and energy density of Na3V2(PO 4)3 cathode material, for sodium ion batteries, was enhanced by partial substitution of iron in the octahedral vanadium site. Through this process, we show for the first time that the V4+/V 5+ redox couple can be utilized in rhombohedral NASICON at above 4.0V vs. Na/Na+. At this juncture, we discovered that iron is unique in its ability to easily activate vanadium's highest oxidation state. Furthermore, an additional 12% capacity is realized due to the increased sodium concentration in the synthesized compound.

Item Type:
Contribution in Book/Report/Proceedings
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200
Subjects:
ID Code:
84196
Deposited By:
Deposited On:
23 Jan 2017 16:06
Refereed?:
Yes
Published?:
Published
Last Modified:
18 Nov 2020 10:07