(Invited) Titania Nanotube Layers as Anodes for Li-Ion Microbatteries

Abstract

With many advantages such as high surface area and improved charge transport, self-supported 3-D nanostructured metal oxides such as titania nanotubes (TNT) layers are promising electrode materials for Li-ion microbatteries. This presentation will review the fabrication of Li-ion microbatteries using as-formed and chemically modified TNTs as negative electrodes [1-9]. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve microbattery designs. Different chemical modifications of nanotubes by ALD technique [10-13] and by the conformal electrodeposition of polymer electrolytes [14] for enhanced electrochemical performance will be presented. Fabrication of full 3D microcells showing high electrochemical performance will be shown and the development of the next generation of 3D flexible microbatteries will be also introduced. REFERENCES [1] V. Galstyan, J. Macak, T. Djenizian, App. Mater. Today, 29 , 101613 (2022). [2] N. Plylahan, M. Letiche, M. Barr, and T. Djenizian, Electrochem. Commun. , 43 , 121 (2014). [3] N. Plylahan, A. Demoulin, C. Lebouin, P. Knauth, T. Djenizian, RSC Adv ., 5, 28474 (2015). [4] N. Plylahan, M. Letiche, M. Barr, B. Ellis, S. Maria, T. N. T. Phan, E. Bloch, P. Knauth, and T. Djenizian, J. Power Sources , 273 , 1182 (2015). [5] G. Salian, C. Lebouin, A. Demoulin, S. Maria, P. Knauth, M. Lepihin, A. Galeyeva, A. Kurbatov, and T. Djenizian , Power Sources , 340, 242 (2017). [6] I. V. Ferrari, M. Braglia, T. Djenizian, and P. Knauth, J. Power Sources , 353 , 95 (2017). [7] G. Salian, B. M. Koo, C. Lefevre, T. Cottineau, C. Lebouin, A. T. Tesfaye, P. Knauth, V. Keller, T. Djenizian, Adv. Mater. Technol. , 3 , 1700274 (2018). [8] Fraoucene, V. A. Sugiawati, D. Hatem, M. S. Belkaid, F. Vacandio, M. Eyraud, M. Pasquinelli, T. Djenizian, Front. Chem. , 7 , 66 (2019). [9] G. D. Salian, C. Lebouin, M. Galeyeva, A. P. Kurbatov, T. Djenizian, Front. Chem., 7 , 675 (2019). [10] H. Sopha, et al, Materials Chemistry and Physics , 276 , 125307 (2022). [11] H. Sopha, et al, Flat. Chem., 17 , 100130 (2019). [12] A. T. Tesfaye, et al, Nanomaterials, 10 , 953 (2020). [13] H. Sopha, et al, ACS Omega, 2 , 2749 (2017). [14] V. A. Sugiawati, F. Vacandio, T. Djenizian, Molecules, 25 , 2121 (2020).