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

Nanoscale Res Lett

Aix-Marseille Université, CNRS, LP3 UMR 7341, F-13288, Marseille Cedex 9, France ; Aix-Marseille Université, CNRS, MADIREL UMR 7246, F-13397, Marseille Cedex 20, France.

Published: October 2014

AI Article Synopsis

  • The study explores the conformal coating of a polymer electrolyte called P(MePEGMA) on titania nanotubes (TiO2nts) using electropolymerization via cyclic voltammetry.
  • Characterization methods such as (1)H NMR and size-exclusion chromatography reveal the formation of short polymer chains, primarily trimers, while X-ray photoelectron spectroscopy confirms the presence of both the polymer and lithium salt (LiTFSI).
  • The galvanostatic tests indicate a 33% improvement in the performance of the half cell when TiO2nts are coated with the polymer electrolyte compared to using metallic Li foil alone.

Article Abstract

This work reports the conformal coating of poly(poly(ethylene glycol) methyl ether methacrylate) (P(MePEGMA)) polymer electrolyte on highly organized titania nanotubes (TiO2nts) 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 ((1)H 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 TiO2nts are conformally coated with the polymer electrolyte.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4194452PMC
http://dx.doi.org/10.1186/1556-276X-9-544DOI Listing

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