Decoupled ion conduction in poly(2-acrylamido-2-methyl-1-propane-sulfonic acid) homopolymers Noor,SAM, Sun,J, Macfarlane,DR, Armand,M, Gunzelmann,D and Forsyth,M 2014, Decoupled ion conduction in poly(2-acrylamido-2-methyl-1-propane-sulfonic acid) homopolymers, Journal of materials chemistry a, vol. 2, no. 42, pp. 17934-17943, doi: 10.1039/c4ta03998j. Attached Files Name Description MIMEType Size Downloads Title Decoupled ion conduction in poly(2-acrylamido-2-methyl-1-propane-sulfonic acid) homopolymers Author(s) Noor,SAM Sun,J Macfarlane,DR Armand,M Gunzelmann,D Forsyth,M orcid.org/0000-0002-4273-8105 Journal name Journal of materials chemistry a Volume number 2 Issue number 42 Start page 17934 End page 17943 Publisher Royal Society of Chemistry Publications Place of publication Cambridge, England Publication date 2014-11-14 ISSN 2050-7488 2050-7496 Keyword(s) Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science SULFONATE COPOLYMER IONOMERS SOLID POLYMER ELECTROLYTE LIQUID ELECTROLYTES SALT TRANSPORT COUNTERIONS POLYSTYRENE MORPHOLOGY COMPLEXES BATTERIES Summary As the focus on developing new polymer electrolytes continues to intensify in the area of alternative energy conversion and storage devices, the rational design of polyelectrolytes with high single ion transport rates has emerged as a primary strategy for enhancing device performance. Previously, we reported a series of sulfonate based copolymer ionomers based on using mixed bulky quaternary ammonium cations and sodium cations as the ionomer counterions. This led to improvements in the ionic conductivity and an apparent decoupling from the Tg of the ionomer. In this article, we have prepared a new series of ionomers based on the homopolymer of poly(2-acrylamido-2-methyl-1-propane-sulfonic acid) using differing sizes of the ammonium counter-cations. We observe a decreasing Tg with increasing the bulkiness of the quaternary ammonium cation, and an increasing degree of decoupling from Tg within these systems. Somewhat surprisingly, phase separation is observed in this homopolymer system, as evidenced from multiple impedance arcs, Raman mapping and SEM. The thermal properties, morphology and the effect of plasticizer on the transport properties in these ionomers are also presented. The addition of 10 wt% plasticizer increased the ionic conductivity between two and three orders of magnitudes leading to materials that may have applications in sodium based devices. This journal is Language eng DOI 10.1039/c4ta03998j 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 DP130101652 Copyright notice ©2014, Royal Society of Chemistry Persistent URL http://hdl.handle.net/10536/DRO/DU:30068248 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version 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, 10:44:47 EST Wed, 17 Dec 2014, 04:02:03 EST Thu, 18 Dec 2014, 13:24:26 EST Thu, 18 Dec 2014, 13:36:24 EST Thu, 12 Feb 2015, 15:36:51 EST Fri, 13 Feb 2015, 08:26:20 EST Filtered Full Citation counts:   Cited 19 times in TR Web of Science Cited 20 times in Scopus Search Google Scholar Access Statistics: 557 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Tue, 16 Dec 2014, 10:44:47 EST

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