Hydrothermal synthesis of Li4Ti5O12/C nanostructured composites: Morphology and electrochemical performance

Vujković, Milica; Stojković, Ivana; Mitrić, Miodrag; Mentus, Slavko; Cvjetićanin, Nikola

doi:10.1016/j.materresbull.2012.09.071

Cited by 26 publications

(9 citation statements)

References 32 publications

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“…Cell parameters (Table 1) show minimal variation for the prepared materials. Minor crystal size changes are related to Yb 3+ content 31,334 …”

Section: Resultsmentioning

confidence: 99%

“…Synthesis by the hydrothermal method has many advantages including fast reaction kinetics, small particle size, homogeneous particle size distribution, high crystal property, and low heat treatment temperature. In addition, in this method, particle size and particle size distribution can be controlled by changing reaction parameters such as temperature and pressure 28–32 . In this study, we first synthesized Li 4 Ti 5 O 12 by a novel and easy hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, in this method, particle size and particle size distribution can be controlled by changing reaction parameters such as temperature and pressure. [28][29][30][31][32] In this study, we first synthesized Li 4 Ti 5 O 12 by a novel and easy hydrothermal method. Then, we optimized the synthesis by synthesizing it together with the ytterbium (Yb 3+ ) concentration.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂

Dokan

2022

Int J Applied Ceramic Tech

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This work reports the combined effect of the morphology and crystallization to investigate the role of Yb3+ as an additive in Li4Ti5O12 crystals on its photocatalytic and photoluminescence (PL) properties. With the pure phase, the synthesized samples have a spherical morphology and spherical structure with good crystallinity and uniform particle size distribution. Li4Ti5O12 doped with ytterbium (Yb3+), were obtained by a new optimized hydrothermal approach. The crystal properties and surface morphology of the synthesized compounds were examined by X‐ray diffraction method and field emission scanning electron microscopy. Bond structures and surface areas were investigated by Fourier transform infrared spectroscopy and Brunauer‐Emmett‐Teller analyses. Finally, the excitation and emission spectra were obtained by a PL spectrophotometer. The PL results show that room‐temperature PL of Yb3+ doped Li4Ti5O12 phosphor has an emission peak at 710 nm which can be attributed to Li4Ti5O12 crystal defect emission. Moreover, it has been found that Yb doping resulted in enhancement of photocatalytic activity, evaluated by monitoring the degradation of methylene blue solution. Note that, 0.01% Yb doped lithium titania phosphor exhibited excellent photocatalytic activity.

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“…Cell parameters (Table 1) show minimal variation for the prepared materials. Minor crystal size changes are related to Yb 3+ content 31,334 …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂

Dokan

2022

Int J Applied Ceramic Tech

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“…The main advantage of this oxide is that it is considered as a "zero strain Li host", meaning that it does not undergo volumetric expansion upon lithiation [58][59][60]. Thus, the SEI formed is not fractured during cycling and allows an extended cycle life compared to graphite, even at high C-rates [61,62]. This makes LTO a good candidate for high power applications [63,64].…”

Section: Lithium Titanate Oxidementioning

confidence: 99%

Future Material Developments for Electric Vehicle Battery Cells Answering Growing Demands from an End-User Perspective

et al. 2021

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Nowadays, batteries for electric vehicles are expected to have a high energy density, allow fast charging and maintain long cycle life, while providing affordable traction, and complying with stringent safety and environmental standards. Extensive research on novel materials at cell level is hence needed for the continuous improvement of the batteries coupled towards achieving these requirements. This article firstly delves into future developments in electric vehicles from a technology perspective, and the perspective of changing end-user demands. After these end-user needs are defined, their translation into future battery requirements is described. A detailed review of expected material developments follows, to address these dynamic and changing needs. Developments on anodes, cathodes, electrolyte and cell level will be discussed. Finally, a special section will discuss the safety aspects with these increasing end-user demands and how to overcome these issues.

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“…For instance, if the material possesses insufficient ionic (that is, Li + ) conductivity, transition to nanoscale, as well as grain morphology optimization is performed, to decrease diffusion length or/and expose particular crystal planes, through which the enhanced ionic transport may occur15678. At the same time, to increase electronic component of the conductivity, various additives (usually carbonaceous materials) are often used, yielding composite-type electrodes91011. Alternatively, intrinsic transport properties, as well as chemical stability of the candidate electrode compound can also be adjusted, typically by appropriate chemical modification (such as doping)8121314.…”

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confidence: 99%

Hierarchically structured lithium titanate for ultrafast charging in long-life high capacity batteries

Odziomek¹,

Chaput²,

Rutkowska³

et al. 2017

Nat Commun

122

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High-performance Li-ion batteries require materials with well-designed and controlled structures on nanometre and micrometre scales. Electrochemical properties can be enhanced by reducing crystallite size and by manipulating structure and morphology. Here we show a method for preparing hierarchically structured Li4Ti5O12 yielding nano- and microstructure well-suited for use in lithium-ion batteries. Scalable glycothermal synthesis yields well-crystallized primary 4–8 nm nanoparticles, assembled into porous secondary particles. X-ray photoelectron spectroscopy reveals presence of Ti+4 only; combined with chemical analysis showing lithium deficiency, this suggests oxygen non-stoichiometry. Electron microscopy confirms hierarchical morphology of the obtained material. Extended cycling tests in half cells demonstrates capacity of 170 mAh g−1 and no sign of capacity fading after 1,000 cycles at 50C rate (charging completed in 72 s). The particular combination of nanostructure, microstructure and non-stoichiometry for the prepared lithium titanate is believed to underlie the observed electrochemical performance of material.

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Hydrothermal synthesis of Li4Ti5O12/C nanostructured composites: Morphology and electrochemical performance

Cited by 26 publications

References 32 publications

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂

Future Material Developments for Electric Vehicle Battery Cells Answering Growing Demands from an End-User Perspective

Hierarchically structured lithium titanate for ultrafast charging in long-life high capacity batteries

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Hydrothermal synthesis of Li4Ti5O12/C nanostructured composites: Morphology and electrochemical performance

Cited by 26 publications

References 32 publications

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li4Ti5O12

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li4Ti5O12

Future Material Developments for Electric Vehicle Battery Cells Answering Growing Demands from an End-User Perspective

Hierarchically structured lithium titanate for ultrafast charging in long-life high capacity batteries

Contact Info

Product

Resources

About

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂

Investigation of the effect of ytterbium doping on photoluminescence and photocatalytic activity of Li₄Ti₅O₁₂