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Highly conformal electrodeposition of copolymer electrolytes into titania nanotubes for 3D Li-ion batteries

Nareerat Plylahan1, Nana Amponsah Kyeremateng12, Marielle Eyraud2, Frederic Dumur3, Hervé Martinez4, Lionel Santinacci5, Philippe Knauth2 and Thierry Djenizian1*

Author Affiliations

1 Aix Marseille Université, CNRS, Chemistry of Materials Research Group LP3 UMR 7341, Marseille, F-13288, France

2 Aix Marseille Université, CNRS, Electrochemistry of Materials Research Group MADIREL UMR 7246, Marseille, F-13397, France

3 Aix Marseille Université, CNRS, CROPS ICR UMR 7273, Marseille, F-13397, France

4 IPREM-ECP-UMR 5254, Université de Pau et des Pays de l'Adour, Hélioparc Pau-Pyrénées, 2 Av du Président Angot, Pau Cedex 9, 64053, France

5 Aix Marseille Université, CNRS, CINaM UMR 7325, Marseille, F-13288, France

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Nanoscale Research Letters 2012, 7:349  doi:10.1186/1556-276X-7-349

Published: 27 June 2012


The highly conformal electrodeposition of a copolymer electrolyte (PMMA-PEO) into self-organized titania nanotubes (TiO2nt) is reported. The morphological analysis carried out by scanning electron microscopy and transmission electron microscopy evidenced the formation of a 3D nanostructure consisting of a copolymer-embedded TiO2nt. The thickness of the copolymer layer can be accurately controlled by monitoring the electropolymerization parameters. X-ray photoelectron spectroscopy measurements confirmed that bis(trifluoromethanesulfone)imide salt was successfully incorporated into the copolymer electrolyte during the deposition process. These results are crucial to fabricate a 3D Li-ion power source at the micrometer scale using TiO2nt as the negative electrode.

Titania; Nanotubes; Electrodeposition; Copolymer electrolyte; Microbatteries