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Hyperbranched polyurethane acrylate Applied to UV Curable Flame Retardant Coatings

Chemical Research in Chinese Universities 2001年第3期17卷 331-333页

作者： ZHU Sheng-Wu SHI Wen-Fang State Key Laboratory of Fire Science Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026P.R.China

UV curable hyperbranched prepolymers based on amine-ester, ester-amide and ether-amide started with AB_2-type monomers have been prepared by the authors. A series of work on allyl ether maleate hyperbranched polyesters for UV curing coatings by Hult and his colleagues has been reported. However, the UV cured films from those materials are all flammable when attached to fire without addition of flame retardants.

关键词： Flame retardant polyurethane acrylate Phosphorus UV curing

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Lithium bis(trifluoromethanesulfonyl)imide blended in polyurethane acrylate photocurable solid polymer electrolytes for lithium-ion batteries

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Journal of Energy Chemistry 2021年第11期30卷 485-496,I0011页

作者： Cristian Mendes-Felipe J.C.Barbosa R.Gonsalves D.Miranda C.M.Costa J.L.Vilas-Vilela S.Lanceros-Mendez BCMaterials Basque Center for MaterialsApplications and NanostructuresUPV/EHU Science Park48940 LeioaSpain Macromolecular Chemistry Group(LABQUIMAC) Department of Physical ChemistryFaculty of Science and TechnologyUniversity of the Basque Country(UPV/EHU)Barrio Sarriena s/nE-48940 LeioaSpain Center of Physics University of MinhoCampus of Gualtar4710-057 BragaPortugal Center of Chemistry University of MinhoCampus of Gualtar4710-057 BragaPortugal Ai–School of Technology IPCABarcelosPortugal Ikerbasque Basque Foundation for Science48009 BilbaoSpain

The increased demand of electronic devices promotes the development of advanced and more efficient energy storage devices, such as batteries. Lithium-ion batteries (LIBs) are the most studied battery systems due to their high performance. Among the different battery components, the separator allows the control of lithium ion diffusion between the electrodes. To overcome some drawbacks of liquid electrolytes, including safety and environmental issues, solid polymer electrolytes (SPEs) are being developed. In this work, a UV photocurable polyurethane acrylate (PUA) resin has been blended with lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) up to 30 wt% LiTFSI content to reach a maximum ionic conductivity of 0.0032 mS/cm at room temperature and 0.09 mS/cm at 100 ℃. Those values allowed applying the developed materials as photocurable SPE in Swagelok type Li/C-LiFePO_(4) half-cells, reaching a battery discharge capacity value of 139 mAh.g^(−1) at C/30 rate. Those results, together with the theoretical studies of the discharge capacity at different C-rates and temperatures for batteries with LiTFSI/PUA SPE demonstrate the suitability of the developed photocurable SPE for LIB applications.

关键词： Solid polymer electrolytes Photocuring polyurethane acrylate LiTFSI Li-ion batteries

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