TiO2 nanotube layers decorated by titania nanoparticles as anodes for Li-ion microbatteries
Sopha H. Ghigo C. Ng S. Alijani M. Hromadko L. Michalicka J. Djenizian T. Macak J.M.
15 January 2022Elsevier Ltd
Materials Chemistry and Physics
2022#276
In this work, the utilization of TiO2 nanotube (TNT) layers decorated with TiO2 nanoparticles (NPs) as anodes in Li-ion microbatteries is reported for the first time. Such TiO2 NPs decorated TNT layers possess an increased amount of active material and a higher surface area compared with their non-decorated (blank) counterparts. TNT layers decorated with several different amounts of TiO2 NPs were tested by galvanostatic cycling tests. The capacities of the TiO2 NPs decorated TNT layer anodes increase with the amount of NPs decoration due to the enhancement of the capacitive effect. Indeed, an areal capacity of ∼126 μAh cm−2 (vs 88 μAh cm−2 for the non-decorated TNT layer) at the 200th cycle has been obtained after optimizing the NPs loading. On the other hand, a too high NPs loading of the TNT layers leads to a reduced areal capacity due to clogging of the nanotube exteriors and a significant decrease in inner diameter of the nanotubes.
Decoration , Li-ion microbatteries , TiO2 nanoparticles , TiO2 nanotube layers
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Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, Pardubice, 53002, Czech Republic
Central European Institute of Technology, Brno University of Technology, Purkyňova 123, Brno, 612 00, Czech Republic
Mines Saint-Etienne, Center of Microelectronics in Provence, Flexible Electronics Department, Gardanne, 13541, France
Pellenc Energy S.A.S., Quartier Notre Dame, Route de Cavaillon, Pertuis, 84120, France
Al-Farabi Kazakh National University, Center of Physical-Chemical Methods of Research and Analysis, Tole bi str., 96A, Almaty, Kazakhstan
Center of Materials and Nanotechnologies
Central European Institute of Technology
Mines Saint-Etienne
Pellenc Energy S.A.S.
Al-Farabi Kazakh National University
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