Alternative Li-Ion Battery Electrode Based on Self-Organized Titania Nanotubes

Abstract

We investigate the fabrication of an alternative electrode for lithium-ion batteries. The active material consists of self-organized TiO 2 nanotube layers prepared by a simple anodization process. The performances of this type of nanostructured electrode are studied by the combination of structural techniques (Scanning electron microscopy and X-ray diffraction) and electrochemical tests. The discharge/charge properties and cycling performance characteristics are studied for both amorphous and crystalline titania nanotubes. With a maximum areal capacity of 77 µA h cm -2 , a good capacity retention up to 90% over 50 cycles, nanotubular TiO 2 is a promising electrode for rechargeable Li-ion microbatteries.

Effects of various applied voltages on physical properties of TiO2 nanotubes by anodization method

“…Its wide band gap causes photoactivity effect in the UV range, good mechanical strength, non-toxicity, low cost and long-term photostability [1][2][3][4]. Different nanostructures of TiO 2 such as nanotubes [5], nanofibers [6], nanowires [7] and nanorods [8] have been investigated for its wide application in gas sensors [9,10], biomedical application [11], hydrogen generation [12], battery electrode [13] and dye-sensitized solar cells [14][15][16][17] so far. TiO 2 nanoparticles were used in dye-sensitized solar cells as photoanode in 1991 by O'Regan and Gratzel [14].…”

Preparation of Ni Nanoparticles-TiO2Nanotube Arrays Composite and Its Application for Electrochemical Capacitor

“…In addition, its large surface areas, high packing densities and ordered pore networks are expected to facilitate rapid charge/discharge kinetics. 13,14 Consequently, TiO 2 NTs used as a support to load highly dispersed Ni nanoparticles will possess enhanced capacitance because such composite structure can provide more readily available spaces for electrochemical reactions.…”

Ordered mesoporous titanium oxide for thin film microbatteries with enhanced lithium storage

“…From a structural point of view titanium dioxide displays a variety of crystalline polymorphs including anatase, rutile, TiO 2 B, brookite, ramsdellite (R), hollandite (H), columbite and baddeleyite. Among them, only anatase, rutile brookite and TiO 2 B have been tested for LIB applications [5][6][7][8]. Also, TiO 2 presenting X-ray amorphous phase have been readily investigated exhibiting an excellent capacity and long cycling life, but still suffers from high irreversibility in the first cycle and needs of a wide voltage window to deliver reasonable capacity (170 200 mA h g -1 ).…”

“…Numerous nanostructured TiO 2 materials, such as nanotubes, nanofibers, 4 nanowires, and nanoparticles, were designed to improve its electrochemical performance for LIBs [12][13][14][15][16]. Irrespective of their poor electrical conductivity, it has been demonstrated that a layer of self-organized TiO 2 nanotubes (ntTiO 2 ) is useful for alternative Li-ion batteries without conducting binders [6,7]. Indeed, for microelectronic industry it is desirable the use of thin film materials without additives since could reduce about a 20% of their size and weight.…”

“…Indeed, for microelectronic industry it is desirable the use of thin film materials without additives since could reduce about a 20% of their size and weight. For instance ntTiO 2 layers of 900 and 600 nm of nanotube length growth directly from Ti current collectors exhibited volumetric capacity of about 80 and 90 μA h cm -2 μm -1 , respectively [6,7].…”