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Assembly of Na 3 V 2 (PO 4 ) 2 F 3 @C nanoparticles in reduced graphene oxide enabling superior Na + storage for symmetric sodium batteries.
- Source :
-
RSC advances [RSC Adv] 2018 Jan 15; Vol. 8 (6), pp. 2958-2962. Date of Electronic Publication: 2018 Jan 15 (Print Publication: 2018). - Publication Year :
- 2018
-
Abstract
- Reduced graphene oxide (rGO) was used to encapsulate Na <subscript>3</subscript> V <subscript>2</subscript> (PO <subscript>4</subscript> ) <subscript>2</subscript> F <subscript>3</subscript> @Carbon nanoparticles to overcome its inherent low electronic conductivity and achieve superior sodium storage performance. This as-prepared cathode delivers a remarkable rate performance with a discharge capacity of ca. 64 mA h g <superscript>-1</superscript> at 70C and an ultra-long-term cyclability over 4000 cycles with great capacity retention of 81% at 30C. This excellent performance can be attributed to the favorable combination of fast ionic conductivity of the NASICON structure and the interpenetrating conductive carbon framework; thus bringing a good pseudocapacitive quality to this material. Furthermore, thanks to the good sodium storage properties at low potential, a symmetric full cell can be assembled using Na <subscript>3</subscript> V <subscript>2</subscript> (PO <subscript>4</subscript> ) <subscript>2</subscript> F <subscript>3</subscript> @C@rGO as both cathode and anode. The full cell delivers a high discharge capacity of 53 mA h g <superscript>-1</superscript> at 20C rate, further demonstrating the feasibility of this hybrid material for smart grids.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 8
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 35541159
- Full Text :
- https://doi.org/10.1039/c7ra13441j