title: The use of an emulsion templated microcellular poly(dicyclopentadiene-co-norbornene) membrane as a separator in lithium-ion batteries.
abstract: The preparation of open-cell macroporous membranes made by the ring opening metathesis polymerization (ROMP) of a mixture of norbornene and dicyclopentadiene, and their basic applicability as separators in lithium-ion batteries, is discussed. Cyclic voltammetry (CV) measurements of negative electrodes (graphite) and positive electrodes (LiCoO2 ) are performed and the results prove the absence of parasitic decomposition reactions within the membrane at high oxidative or reductive potentials. Furthermore, LiCoO2 /Li half cell cycling studies of 100 charging/discharging cycles reveal that the newly disclosed separator and conventional commercial polyolefin based separators have similar performance. These results demonstrate that a potential weakness in the newly disclosed separator, namely residual double bonds present in the polymer network, does not limit the use of this material as a separator in lithium-ion batteries.
authors.affiliation: Graz University of Technology, Institute for Chemistry and Technology of Materials, Stremayrgasse 9, A 8010 Graz, Austria.
authors.forename: Sebastijan
authors.initials: S
authors.lastname: Kovačič
authors.forename: Harald
authors.initials: H
authors.lastname: Kren
authors.forename: Peter
authors.initials: P
authors.lastname: Krajnc
authors.forename: Stefan
authors.initials: S
authors.lastname: Koller
authors.forename: Christian
authors.initials: C
authors.lastname: Slugovc
mesh_terms: D011211:Electric Power Supplies; D004563:Electrochemistry / Q000295:instrumentation*; D004566:Electrodes; D004655:Emulsions / Q000737:chemistry; D007192:Indenes / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D015394:Molecular Structure; D009636:Norbornanes / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D016062:Porosity
chemical_list: D004655:Emulsions; D007192:Indenes; D009636:Norbornanes; D011108:Polymers; C004689:dicyclopentadiene; D008094:Lithium