Li-intercalation property of mesoporous anatase-TiO2 synthesized by bicontinuous microemulsion-aided process

Moriguchi, Isamu; Hidaka, Ryoji; Yamada, Hirotoshi; Kudo, Tetsuichi

doi:10.1016/j.ssi.2005.02.029

Cited by 28 publications

(23 citation statements)

References 10 publications

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“…Thirdly, the thin pore wall of the materials together with the nanosized building blocks can reduce the lithium-ion diffusion path. [24][25][26]40 These results suggest that the preparation of mesoporous TiO 2 submicrometer spheres leads to a promising anode material for lithium batteries.…”

Section: A78mentioning

confidence: 95%

“…This form of TiO 2 can be expected to be used as the active component of the negative-electrode materials for lithium batteries, though it is strange that there are only a few reports about it. [24][25][26] Generally, mesoporous TiO 2 is prepared by a sol-gel process, 21,23 a hydrothermal process, 27,28 or an ultrasonic process. 29 To the best of our knowledge, there are no reports of the preparation of mesoporous titania using anionic surfactants.…”

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confidence: 99%

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Preparation and Li-Intercalation Properties of Mesoporous Anatase-TiO[sub 2] Spheres

Wang

Liu

et al. 2007

Electrochem. Solid-State Lett.

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Mesoporous materials have gained a great deal of interest as catalysts because of their unique textural and structural characteristics. In this study, mesoporous spheres of anatase-TiO 2 with a specific surface area of 147 m 2 /g and a pore volume of 0.139 cm 3 /g, were successfully synthesized by combining a sol-gel process with an anionic surfactant ͑SDS͒-assisted templating method. When used as the active component of the negative electrode materials for lithium batteries, they exhibit a large initial electrochemical lithium insertion capacity of 257 mAh/g, good reversibility and cyclic performance, as well as high discharge-charge rate properties.Because of their superior physicochemical properties, titanium oxides were widely used as catalyst supports, 1,2 solar-energy conversion, 3-5 photocatalysis, 6,7 sorption media, gas sensors, and electrochemical capacitors. 8 Recently, nanostructure titanium oxides have attracted great attention due to their unique structure and properties. 9-14 As one of the candidates for the negative electrode materials of lithium batteries, it has been reported that TiO 2 nanorods, 15,16 nanotubes, 17,18 and nanowires 19 have higher reversibility and insertion ratios than compact materials in lithium rechargeable batteries. Especially, mesoporous-structured TiO 2 can facilitate better accessibility of reactants to the catalysts 20 and shows a good photocatalyst to some organ molecules 21-23 due to its remarkably large surface area and narrow pore-size distribution. This form of TiO 2 can be expected to be used as the active component of the negative-electrode materials for lithium batteries, though it is strange that there are only a few reports about it. [24][25][26] Generally, mesoporous TiO 2 is prepared by a sol-gel process, 21,23 a hydrothermal process, 27,28 or an ultrasonic process. 29 To the best of our knowledge, there are no reports of the preparation of mesoporous titania using anionic surfactants. In this article, a straightforward combined sol-gel process with an anionic surfactant ͑SDS͒-assisted templating method for the synthesis of mesoporous anatase TiO 2 is reported. The electrochemical insertion of lithium into the mesoporous anatase TiO 2 spheres thus obtained was investigated by cyclic voltammetry and galvanostatic method. ExperimentalAll reagents were analytical grade supplied by the Beijing Agent Company and were used as received. Nanocrystalline mesoporous TiO 2 spheres were synthesized via a combined sol-gel process with a surfactant ͑SDS͒-assisted templating mechanism in a TBTacetylacetonate ͑AcAc͒ modified system. SDS was used as a template behaving as a mesopore-forming agent. AcAc was applied to moderate the hydrolysis of the titanium precursor species by binding with TBT. In a typical synthesis, 1 mL of AcAc was first introduced into 0.5 mL of TBT with a mole ratio of 6.6. When TBT was mixed with AcAc, the AcAc combined with the Ti atom, causing a color change from colorless to yellow. 30 Afterwards, this mixture was added into 20 mL of 0.07 M SDS aqu...

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Section: A78mentioning

confidence: 95%

mentioning

confidence: 99%

Preparation and Li-Intercalation Properties of Mesoporous Anatase-TiO[sub 2] Spheres

Wang

Liu

et al. 2007

Electrochem. Solid-State Lett.

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“…[ 26 ] At rates below 10C the sample with smaller pore-and crystallite sizes maintained higher capacities, but it quickly lost capacity at higher rates. The capacity loss at rates above 10C was much less for the sample containing larger pores and crystallites.…”

Section: Choice and Stability Of Crystallographic Phasesmentioning

confidence: 96%

“…[ 17 ] A more complex mixture of didodecyldimethylammonium bromide, hexane or tetradecane, and water was used in another synthesis of mesoporous anatase TiO 2 . [ 26 ] The bicontinuous microemulsion resulting from this water/surfactant/oil ternary system templated disordered mesopores with mean diameters in the 2.4-3.2 nm range. With increasing calcination temperature in the range from 300 to 380 ° C, the surface area and mesopore volume decreased and the average mesopore size increased.…”

Section: Hard Templatingmentioning

confidence: 99%

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Qian

Stein

2012

Advanced Energy Materials

631

458

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Numerous benefits of porous electrode materials for lithium ion batteries (LIBs) have been demonstrated, including examples of higher rate capabilities, better cycle lives, and sometimes greater gravimetric capacities at a given rate compared to nonporous bulk materials. These properties promise advantages of porous electrode materials for LIBs in electric and hybrid electric vehicles, portable electronic devices, and stationary electrical energy storage. This review highlights methods of synthesizing porous electrode materials by templating and template‐free methods and discusses how the structural features of porous electrodes influence their electrochemical properties. A section on electrochemical properties of porous electrodes provides examples that illustrate the influence of pore and wall architecture and interconnectivity, surface area, particle morphology, and nanocomposite formation on the utilization of the electrode materials, specific capacities, rate capabilities, and structural stability during lithiation and delithiation processes. Recent applications of porous solids as components for three‐dimensionally interpenetrating battery architectures are also described.

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“…5 shows that cyclic performances of the cells with three samples at different current densities from 8.4, 16.8, to 840 mA⋅g −1 . All the samples exhibit good cyclic stability with a coulomb efficiency of about 98% at different discharge/charge rates, although there is a capacity loss from the first cycle to the second cycle, which is comparable to mesoporous anatase-TiO 2 and TiO 2 nanowires [21][22]. T-3 shows its best cyclic performance among three samples: its second capacity at 8.4 mA⋅g −1 still has 235 mAh⋅g −1 , and its capacity at high rate (168 mA⋅g −1 ) is 157 mAh⋅g −1 , which is better than that reported in Ref.…”

Section: Electrochemical Behaviormentioning

confidence: 97%

Preparation of anatase TiO2 with assistance of surfactant OP-10 and its electrochemical properties as an anode material for lithium ion batteries

Tan

et al. 2010

Rare Metals

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With the assistance of nonionic surfactant (OP-10) and surface-selective surfactant (CH 3 COOH), anatase TiO 2 was prepared as an anode material for lithium ion batteries. The morphology, the crystal structure, and the electrochemical properties of the prepared anatase TiO 2 were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and galvanostatic charge and discharge test. The result shows that the prepared anatase TiO 2 has high discharge capacity and good cyclic stability. The maximum discharge capacity is 313 mAh⋅g −1 , and there is no significant capacity decay from the second cycle.

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Li-intercalation property of mesoporous anatase-TiO2 synthesized by bicontinuous microemulsion-aided process

Cited by 28 publications

References 10 publications

Preparation and Li-Intercalation Properties of Mesoporous Anatase-TiO[sub 2] Spheres

Preparation and Li-Intercalation Properties of Mesoporous Anatase-TiO[sub 2] Spheres

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Preparation of anatase TiO2 with assistance of surfactant OP-10 and its electrochemical properties as an anode material for lithium ion batteries

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