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Ionic liquid electrolytes supporting high energy density in sodium-ion batteries based on sodium vanadium phosphate composites

journal contribution
posted on 11.04.2018, 00:00 authored by C V Manohar, Tiago Correia Mendes, Mega KarMega Kar, Dabin Wang, Changlong Xiao, Maria ForsythMaria Forsyth, Sagar Mitra, Douglas R MacFarlane
Sodium-ion batteries (SIBs) are widely considered as alternative, sustainable, and cost-effective energy storage devices for large-scale energy storage applications. In this work, an easily fabricated sodium vanadium phosphate-carbon composite (NVP@C) cathode material shows a good rate capability, and long cycle life (89% capacity retention after 5000 cycles at a rate of 10C) with an ionic liquid electrolyte for room temperature sodium metal batteries. The electrochemical performance of a full-cell sodium ion battery with NVP@C and hard carbon electrodes was also investigated at room temperature with an ionic liquid electrolyte. The battery exhibited 368 W h kg-1 energy density and 75% capacity retention after 100 cycles, outperforming the organic electrolyte-based devices.

History

Journal

Chemical communications

Volume

54

Issue

28

Pagination

3500 - 3503

Publisher

Royal Society of Chemistry

Location

Cambridge, Eng.

eISSN

1364-548X

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, The Royal Society of Chemistry