Poly(ionic liquid) iongel membranes for all solid-state rechargeable sodium battery

Fdz De Anastro, A, Lago, N, Berlanga, C, Galcerán, M, Hilder, Matthias, Forsyth, Maria and Mecerreyes, D 2019, Poly(ionic liquid) iongel membranes for all solid-state rechargeable sodium battery, Journal of Membrane Science, vol. 582, pp. 435-441, doi: 10.1016/j.memsci.2019.02.074.

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Title Poly(ionic liquid) iongel membranes for all solid-state rechargeable sodium battery
Author(s) Fdz De Anastro, A
Lago, N
Berlanga, C
Galcerán, M
Hilder, MatthiasORCID iD for Hilder, Matthias orcid.org/0000-0002-1649-3546
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Mecerreyes, D
Journal name Journal of Membrane Science
Volume number 582
Start page 435
End page 441
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2019-07-15
ISSN 0376-7388
Keyword(s) Ionic liquid membranes
Polymer electrolytes
Sodium-ion batteries
Science & Technology
Physical Sciences
Engineering, Chemical
Polymer Science
Summary Sodium-ion is seen as one of the most promising alternative technologies to the current lithium-ion batteries. Sodium is cheap and widely available in comparison to lithium, however new electrode and polymer electrolyte materials need to be found to improve the performance and security of sodium batteries. In this work, we show a new iongel electrolyte with excellent properties for an all solid-state rechargeable sodium batteries. This iongel membrane is based on the poly(dimethyldiallylammonium)polyDADMA-TFSI poly(ionic liquid), N-Propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI)and sodium bis (fluorosulfonyl)imide (NaFSI)the salt. PolyDADMA-TFSI can incorporate up to 50 wt% of C3mpyrFSI ionic liquid content in a self-standing membrane with high ionic conductivity. The increasing the NaFSI concentration in this electrolyte was beneficial for the sodium transference number but detrimental for the ionic conductivity of the membranes. The addition of alumina nanoparticles further improved the membrane mechanical robustness without affecting significantly the ionic conductivity. The iongel membranes presented a wide electrochemical window of 5 V thereby supporting sodium electrochemistry as demonstrated by excellent symmetric sodium cell cycling at 70 ᵒC for 60 cycles. Finally, the electrochemical performance of the optimum composition iongel was evaluated in sodium all solid-state battery using a sodium metal anode and NaFePO4 as the cathode material. The cells show good capacity retention with high coulombic efficiency (>97%)at C rates between C/20 and C/5 achieving 110 mAhg−1 at C/20.
Language eng
DOI 10.1016/j.memsci.2019.02.074
Field of Research 091205 Functional Materials
030604 Electrochemistry
030399 Macromolecular and Materials Chemistry not elsewhere classified
03 Chemical Sciences
09 Engineering
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID CE140100012
Copyright notice ©2019, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30121926

Document type: Journal Article
Collections: Institute for Frontier Materials
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