Journal article
Enhanced ion transport in an ether aided super concentrated ionic liquid electrolyte for long-life practical lithium metal battery applications
U Pal, F Chen, D Gyabang, T Pathirana, B Roy, R Kerr, DR MacFarlane, M Armand, PC Howlett, M Forsyth
Journal of Materials Chemistry A | ROYAL SOC CHEMISTRY | Published : 2020
DOI: 10.1039/d0ta06344d
Abstract
We explore a novel ether aided superconcentrated ionic liquid electrolyte: a combination of ionic liquid,N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI) and ether solvent, 1,2 dimethoxy ethane (DME) with 3.2 mol kg−1LiFSI salt, which offers an alternative ion-transport mechanism and improves the overall fluidity of the electrolyte. The molecular dynamics (MD) study reveals that the coordination environment of lithium in the ether aided ionic liquid system offers a coexistence of both the ether DME and FSI anion simultaneously and the absence of ‘free’, uncoordinated DME solvent. These structures lead to very fast kinetics and improved current density for lithium depositio..
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Awarded by Australian Government
Funding Acknowledgements
This work is financially supported by the Australia-India Strategic Research Fund (AISRF, grant agreement no. 48515). Professors Maria Forsyth and Douglas MacFarlane thank the ARC for their respective Australian Laureate Fellowship (FL110100013 and FL120100019). The authors acknowledge the Australian Research Council (ARC) for funding via the Australian Centre for Electromaterials Science, grant CE140100012. Dr Fangfang Chen acknowledges the assistance of computational resources provided at the NCI National Facility systems at the Australian National University through the National Computational Merit Allocation Scheme supported by the Australian Government. The authors would also like to thank Prof. Austen Angell for his valuable discussions. Deakin University's Advanced Characterisation Facility is acknowledged for use of the NMR facility. The authors gratefully acknowledge the Office of the Deputy Vice-Chancellor of Research of Deakin University for funding of this research through the Battery Technology Research and Innovation Hub (BatTRI-Hub). Dr Robert Kerr and Mr Mojtaba Eftekharnia is also acknowledged by the authors.