Zn electrochemistry in 1-Ethyl-3-Methylimidazolium and N-Butyl-N-Methylpyrrolidinium Dicyanamides: promising new rechargeable Zn battery electrolytes Simons, Tristan J., MacFarlane, Douglas R., Forsyth, Maria and Howlett, Patrick C. 2014, Zn electrochemistry in 1-Ethyl-3-Methylimidazolium and N-Butyl-N-Methylpyrrolidinium Dicyanamides: promising new rechargeable Zn battery electrolytes, ChemElectroChem, vol. 1, no. 10, pp. 1688-1697, doi: 10.1002/celc.201402177. Attached Files Name Description MIMEType Size Downloads Title Zn electrochemistry in 1-Ethyl-3-Methylimidazolium and N-Butyl-N-Methylpyrrolidinium Dicyanamides: promising new rechargeable Zn battery electrolytes Author(s) Simons, Tristan J. MacFarlane, Douglas R. Forsyth, Maria orcid.org/0000-0002-4273-8105 Howlett, Patrick C. orcid.org/0000-0002-2151-2932 Journal name ChemElectroChem Volume number 1 Issue number 10 Start page 1688 End page 1697 Total pages 10 Publisher Wiley Place of publication Weinheim, Germany Publication date 2014-10-14 ISSN 2196-0216 Keyword(s) Science & Technology Physical Sciences Electrochemistry batteries electrolytes ionic liquids overpotential zinc ELECTRODEPOSITION WATER INTERFACE BEHAVIOR BIS(TRIFLUOROMETHANESULFONYL)IMIDE PYRROLIDINIUM CHALLENGES TRANSPORT Summary  We have studied both 1-ethyl-3-methylimidazolium (C2mim) and N-butyl-N-methylpyrrolidinium (C4mpyr) dicyanamide (dca) ionic liquids (ILs) containing 3 wt % H2O and 9 mol % Zn(dca)2 salt for their ability to support Zn0/2+ electrochemistry in the context of a rechargeable Zn battery. Despite the similarities of the two IL electrolyte systems [identical H2O and Zn(dca)2 contents], the system based on [C2mim] supported much higher current densities for Zn electrochemistry at greatly reduced overpotentials [−0.23 V vs. Zn pseudo-reference, 32 mA cm−2 (red) and 61 mA cm−2 (ox)] compared to the [C4mpyr]-based electrolyte [−0.84 V vs. Zn pseudo-reference, 8 mA cm−2 (red) and 15 mA cm−2 (ox)]. The overpotential for Zn deposition is reduced by 0.13 V on Zn metal surfaces compared to glassy carbon (GC), regardless of the electrolyte used. The morphologies of the Zn deposits on both GC and Zn surfaces were also studied. The Zn surfaces promote a deposition that displays a smooth morphology, resulting from an instantaneous nucleation mechanism demonstrated by chronoamperometric experiments. Finally, both [C2mim] and [C4mpyr] electrolytes were tested in symmetrical Zn|Zn cells, where it was determined that the [C2mim] system could sustain over 90 cycles at 0.1 mA cm−2, whereas the [C4mpyr] based system could only achieve 15 cycles at the more modest current density of 0.05 mA cm−2. Language eng DOI 10.1002/celc.201402177 Indigenous content off Field of Research 091205 Functional Materials 030604 Electrochemistry Socio Economic Objective 850602 Energy Storage (excl. Hydrogen) HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Grant ID CE0561616 ARC FL1101000013 ARC FL1201000019 Copyright notice ©2014, Wiley Persistent URL http://hdl.handle.net/10536/DRO/DU:30068249 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Tue, 16 Dec 2014, 10:52:38 EST Tue, 16 Dec 2014, 10:53:11 EST Wed, 17 Dec 2014, 04:02:09 EST Thu, 12 Feb 2015, 15:37:00 EST Fri, 13 Feb 2015, 08:49:47 EST Thu, 26 Feb 2015, 10:57:24 EST Thu, 08 Oct 2015, 13:07:28 EST Wed, 14 Oct 2015, 14:05:20 EST Wed, 02 Mar 2016, 07:43:16 EST Wed, 09 Nov 2016, 11:59:58 EST Fri, 20 Oct 2017, 12:37:07 EST Thu, 08 Jul 2021, 16:05:13 EST Mon, 12 Jul 2021, 09:35:02 EST Filtered Full Citation counts:   Cited 37 times in TR Web of Science Cited 37 times in Scopus Search Google Scholar Access Statistics: 818 Abstract Views, 5 File Downloads  -  Detailed Statistics Created: Tue, 16 Dec 2014, 10:53:11 EST

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