Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 8, Issue 25, Pages 12391-12397Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ta00130a
Keywords
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Funding
- NSFC [21773126]
- National Key Research and Development Program of China [2018YFE0111600]
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Polyanion-type Na3V2(PO4)(2)F(3)with high potential is regarded as a promising cathode material for sodium-ion batteries. However, it usually shows low electronic and ionic conductivity, further leading to inferior rate capability. Here well-dispersed Na3V2(PO4)(2)F(3)nanoparticles were anchored on reduced graphene oxide (rGO)viaa facile precipitation process in an isopropanol-water mixed solvent. The Na3V2(PO4)(2)F-3@rGO composite exhibited apparently improved kinetics and further delivered high reversible capacity and outstanding high-rate performance. Furthermore, sodium-ion full cells composed of Na3V2(PO4)(2)F-3@rGO cathodes and hard carbon anodes presented high power density. This work offers a simple and scalable approach to boost the kinetics of polyanion-type cathodes for high-power alkali-ion batteries.
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