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NASICON-structured Na3Mn0.5V0.5Ti(PO4)3 cathode with high capacity for sodium-ion batteries.
- Source :
-
Ceramics International . Jul2022, Vol. 48 Issue 14, p20933-20939. 7p. - Publication Year :
- 2022
-
Abstract
- Sodium super-ionic conductor (NASICON) materials are believed as competitive cathodes for sodium-ion batteries, however, their practical application is still prohibited by the limited reversible capacity. In this study, the tri-metal NASICON structured Na 3 Mn 0.5 V 0.5 Ti(PO 4) 3 is designed to combine with reduced graphene oxide (NMVTP/rGO) as cathode material. Benefited from the multi-step redox couples of Mn, V, and Ti, NMVTP/rGO realizes high reversible capacity and wide operating voltage. The small sizes of Na 3 Mn 0.5 V 0.5 Ti(PO 4) 3 and rGO ensure the fast charge migration. The rGO inhibits the dissolution of electrode material. As a result, NMVTP/rGO exhibits large specific capacity of 284.6 mAh g−1 at 0.1C, high rate performance (170.2 mAh g−1 at 1C and 108.5 mAh g−1 at 5C), and good cyclic stability. This work demonstrates a new insight for designing tri-metal NASICON structured materials with high capacity for sodium-ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 48
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 157221265
- Full Text :
- https://doi.org/10.1016/j.ceramint.2022.04.085