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Enhanced electrochemical performance of Lithium-ion batteries by conformal coating of polymer electrolyte

Abstract : This work reports the conformal coating of poly(poly(ethylene glycol) methyl ether methacrylate) (P(MePEGMA)) polymer electrolyte on highly organized titania nanotubes (TiO(2)nts) fabricated by electrochemical anodization of Ti foil. The conformal coating was achieved by electropolymerization using cyclic voltammetry technique. The characterization of the polymer electrolyte by proton nuclear magnetic resonance (H-1 NMR) and size-exclusion chromatography (SEC) shows the formation of short polymer chains, mainly trimers. X-ray photoelectron spectroscopy (XPS) results confirm the presence of the polymer and LiTFSI salt. The galvanostatic tests at 1C show that the performance of the half cell against metallic Li foil is improved by 33% when TiO(2)nts are conformally coated with the polymer electrolyte.
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Submitted on : Wednesday, April 18, 2018 - 10:47:00 AM
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Nareerat Plylahan, Sébastien Maria, Trang N. T. Phan, Manon Letiche, Hervé Martinez, et al.. Enhanced electrochemical performance of Lithium-ion batteries by conformal coating of polymer electrolyte. Nanoscale Research Letters, SpringerOpen, 2014, 9, pp.544. ⟨10.1186/1556-276X-9-544⟩. ⟨hal-01418553⟩

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