Poly(ether amine) and cross-linked poly(propylene oxide) diacrylate thin-film polymer electrolyte for 3D-microbatteries
2010 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 12, no 11, 1498-1500 p.Article in journal (Refereed) Published
This paper presents a novel thin-film electrolyte of a 2:1 blend of polyetheramine (glyceryl poly(oxypropylene)) and cross-linked oligomeric poly(propylene oxide) diacrylate with LiTFSI. The polyetheramine acts as a surfactant, and can thereby be applied as a conformal coating on complex surfaces-here demonstrated for porous LiFePO4 cathodes-making it useful for 3D-microbatteries. The poly(propylene oxide) diacrylate blends with the surfactant and is easily UV cross-linked, thereby ensuring good mechanical stability. Electrolytes, ∼ 2 μm thick, were casted onto LiFePO 4 cathodes and cycled against metallic lithium, displaying stable discharge capacities of ∼ 8 mAh/g at room temperature and ∼ 120 mAh/g at 60 °C. The electrolyte showed conductivities of 3.45 × 10 - 6 and 5.80 × 10- 5 S cm- 1 at room temperature and 60 °C, respectively.
Place, publisher, year, edition, pages
2010. Vol. 12, no 11, 1498-1500 p.
LiFePO4 cathode, Microbattery, Polymer cross-linking, Polymer electrolyte, Surfactant
Inorganic Chemistry Polymer Chemistry
Research subject Chemistry with specialization in Inorganic Chemistry; Chemistry with specialization in Polymer Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-138229DOI: 10.1016/j.elecom.2010.08.017ISI: 000284386100011OAI: oai:DiVA.org:uu-138229DiVA: diva2:378954