Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

Abstract

Nanostructured TiO 2 and TiO 2 -ZrO 2 (4 wt % ZrO 2 ) in the anatase crystal modification have been synthesized through a template sol-gel route. Morphological and structural features of these compounds have been studied by scanning electron microscopy and Raman spectroscopy. The synthesized materials are porous nanostructured microtubes 10-300 μm in length and 3-5 μm in diameter. The size of nanoparticles forming tubes is 15-25 nm. Doping with zirconia (≤4 wt %) does not change the anatase crystal structure; at the same time, this is accompanied by an increase in the unit cell parameters and in the number of defects in the lattice. The availability of nanostructured TiO 2 -ZrO 2 as an anode material for a Li ion battery has been evaluated by the galvanostatic discharge-charge method. After 20 cycles in the range 3-1 V, the reversible capacity of TiO 2 -ZrO 2 was 140 mA h/g, while the capacity of the undoped TiO 2 was 65 mA h/g. The devel oped method for modification of titania is efficient from the standpoint of producing a promising anode material for Li ion battery.

Recent Progress in MOF‐Derived Porous Materials as Electrodes for High‐Performance Lithium‐Ion Batteries

“…All transition metal oxides, especially Co 3 O 4 and CoO, exhibit high specific capacity in cycling and show good prospects for practical applications. [55,115] However, the application of Co 3 O 4 is severely limited due to its poor cycling stability and multiplicative performance. Therefore, Li et al formed precursors by combining TiO with Co-MOF through a solvothermal method and carbonized the precursors in a reactor at high-temperature solidphase reaction to obtain carbon-coated CoTiO 3 nanocrystals.…”

“…All transition metal oxides, especially Co 3 O 4 and CoO, exhibit high specific capacity in cycling and show good prospects for practical applications. [ 55,115 ] However, the application of Co 3 O 4 is severely limited due to its poor cycling stability and multiplicative performance. Therefore, Li et al.…”

Enhancing the reversible capacity of nanostructured TiO 2 (anatase) by Zr-doping using a sol–gel template method

“…According to the results of the previous Raman spectroscopy studies [13], the microtubes of Zr-doped and undoped TiO 2 consisted of nanocrystallites with anatase structure Ti 1Àx Zr x O 2 (x = 0; 0.03) and amorphous SiO 2 as impurities. The incorporation of 1 at.% Zr has no effect on nanoparticles crystal structure, however, the unit cell parameters increased.…”

A Composite TiO2-SiO2-ZrO2Oxide System as a High-Performance Anode Material for Lithium-Ion Batteries

“…5,6 Therefore, an intensive works are focused on improvement of technical form of anodes and on searching for novel lithium compounds which can act as a high-performance electrode material. [1][2][3][4][5][6] Metal oxides and their derivates have recently gained popularity as anodes for Li-ion batteries because of their improved chemical tolerance, relative high surface area and well developed porosity, broad electrochemical window, rate capability and enhanced cyclic performance by virtue of their superior electrical conductivity [7][8][9][10][11][12][13][14][15][16][17] -see Table I. Among numerous advanced, active materials titanium dioxide as well as titania-based hybrids are recognized as those which can substitute graphite in typical anodes.…”

“…That is why, a significant amount of different type materials can be obtained, and their final application is determined by the synthesis route and their physicochemical properties. [30][31][32][33][34][35][36][37] In the presented work, an attempt was made to synthesize a novel, not published so far, TiO 2 -SiO 2 -ZrO 2 triple oxide system, with molar ratio of TiO 2 :SiO 2 :ZrO 2 = 8:1:1, utilizing a sol-gel route. The idea was to obtain material which can act as a high-performance anode material for lithium-ion batteries and can be an alternative for commonly used ones.…”