Solid polymer electrolyte coating from a bifunctional monomer for three-dimensional microbattery applications
2013 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 238, 435-441 p.Article in journal (Refereed) Published
This work comprises the synthesis and characterization of a novel solid polymer electrolyte based on oligomeric polyetheramine substituted with a methacrylic group at one of its three chain ends. This modification introduces a bifunctionality to the PEA monomer it can act both as polymerizable unit and surfactant. Thin and pinhole-free polymer electrolyte layers could be constructed with thicknesses in the order of <1 mu m using UV-initiated polymerization. The electrolyte exhibits good electrochemical and chemical stability up to 4 V vs. Li+/Li. LiFePO4 cathode coated with the electrolyte was cycled against lithium at 60 degrees C, and displayed reasonable capacity values (similar to 140 mAh g(-1)) for 10 cycles, where after Li dendrite formation contributed to battery instabilities.
Place, publisher, year, edition, pages
2013. Vol. 238, 435-441 p.
3D-microbattery solid electrolyte, Polymer electrolyte, Bifunctional monomer, Polyetheramine
IdentifiersURN: urn:nbn:se:uu:diva-204760DOI: 10.1016/j.jpowsour.2013.04.058ISI: 000320901900058OAI: oai:DiVA.org:uu-204760DiVA: diva2:641171