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3-D microbattery electrolyte by self-assembly of oligomers
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
2011 (English)In: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 198, no 1, 26-31 p.Article in journal (Refereed) Published
Abstract [en]

This paper reports the preparation and characterization of novel thin film electrolytes by UV cross-linking of poly(propylene glycol) diacrylate in the presence of polyetheramine (glyceryl poly(oxypropylene)triamine) and LiTESI. The oligomeric surfactant polyetheramine facilitates self-assembly of the electrolyte, enabling it to be applied conformally onto a complex substrate which is necessary for 3D-microbatteries, while the acrylate network supplies mechanical stability. Conformal coatings onto LiFePO(4) electrodes and Cu nanopillars were confirmed by SEM. Ionic conductivities of 3.5 x 10(-6) and 5.8 x 10(-5) S/cm were measured at room temperature and 60 degrees C, respectively, at Li:O = 1:20 and PEA:PPGDA = 2:1 ratios. The electrochemical stability window test showed that the electrolyte is stable above 5.0 V vs. Li/Li(+). Thermal analyses by TGA and DSC demonstrated that the polymer electrolyte is amorphous and thermally stable up to 300 degrees C.

Place, publisher, year, edition, pages
2011. Vol. 198, no 1, 26-31 p.
Keyword [en]
Polymer electrolyte, 3D-microbattery, Polymer blend, Ionic conductivity
National Category
Engineering and Technology Inorganic Chemistry
Research subject
Chemistry with specialization in Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-161065DOI: 10.1016/j.ssi.2011.07.005ISI: 000295892700005OAI: oai:DiVA.org:uu-161065DiVA: diva2:456369
Available from: 2011-11-14 Created: 2011-11-07 Last updated: 2017-12-08Bibliographically approved

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Gustafsson, TorbjörnBrandell, Daniel

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