Synthesis and performance of Li4Ti5O12 anode materials using the PVP-assisted combustion method

Longjiao, Chang; Luo, Shuai; Zhang, Hai-Liang; Qi, Xiwei; Wang, Zhiyuan; Liu, Yanguo; Zhai, Yuchun

doi:10.1016/j.cclet.2014.09.002

Cited by 12 publications

(5 citation statements)

References 18 publications

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“…Crystal structure of both as-obtained Li 4 Ti 5 O 12 samples was characterized via XRD, and the results are plotted in Figure 1. It clearly verifies that the dominating diffraction peaks of both as-synthesized Li 4 Ti 5 O 12 samples are in consistence with the base peaks of spinel Li 4 Ti 5 O 12 (PDF No.49-0207), demonstrating that the nitrogen-doped carbon layer coating process has little effect on the formation of spinel Li 4 Ti 5 O 12 (Li et al, 2013a; Chang et al, 2014; Wang P. et al, 2017). Perhaps due to the amorphous morphology of carbon, the diffraction peak relative to carbon was not observed (Xu et al, 2017; Liu et al, 2018).…”

Section: Resultsmentioning

confidence: 58%

Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties

et al. 2019

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Folic acid is first time applied as a carbon-nitrogen precursor to fabricate Li 4 Ti 5 O 12 @CN composites via ball milling Nano-TiO 2 , Li 2 CO 3 and folic acid with ethanol as solvent, and then followed by heating treatment in argon. XRD, SEM, TEM, XPS, charge-discharge test and EIS are used to evaluate the influence of N-doped carbon coating on its structure, morphologies and electrochemical property. It is demonstrated that the N-doped carbon coated Li 4 Ti 5 O 12 composite exhibits superior high-rate performance compared with pure Li 4 Ti 5 O 12 . It possesses a high discharge capacity of 174, 165 mAh g −1 at 0.5 and 10 C, respectively. Additionally, an initial specific capacity of 96.2% is obtained after 200 cycles at 10 C. The remarkable performance might be put down to the N-doped carbon layer providing efficiently electron conductive network and nanosized decreasing lithium ion diffusion path.

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Section: Resultsmentioning

confidence: 58%

Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties

et al. 2019

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“…Several workers choose the homopolymer polyvinylpyrrolidone (PVP, (C 6 H 9 NO) n ) as a chelating agent [ 278 , 279 , 280 ]. When PVP is added to the metal colloidal dispersion, its non-ionic surfactant property makes PVP readily dissolve in water and the imide group (N and O atoms) establishes a strong affinity to a single unit of metal colloid.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…The nitrogen content of the shell was 8.5 wt.%, which is considerably greater than the average mass ratio (1.1 wt.%) of nitrogen in the LTO material. Chang et al [280] synthesized LTO anode materials by a gel-combustion method with PVP as the polymer chelating agent and fuel followed by a post-annealing at 800 • C. Excellent reversible capacities of 167, and 144 mAh g −1 were achieved at the current densities of 0.5C and 5C. Yuan et al [101] used a cellulose-assisted glycine-nitrate combustion process for a production of high-purity and well-crystallized LTO oxides.…”

Section: Solution-combustion Methodsmentioning

confidence: 99%

Fabrication of Li4Ti5O12 (LTO) as Anode Material for Li-Ion Batteries

Julien,

Mauger

2024

Micromachines

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The most popular anode material in commercial Li-ion batteries is still graphite. However, its low intercalation potential is close to that of lithium, which results in the dendritic growth of lithium at its surface, and the formation of a passivation film that limits the rate capability and may result in safety hazards. High-performance anodes are thus needed. In this context, lithium titanite oxide (LTO) has attracted attention as this anode material has important advantages. Due to its higher lithium intercalation potential (1.55 V vs. Li+/Li), the dendritic deposition of lithium is avoided, and the safety is increased. In addition, LTO is a zero-strain material, as the volume change upon lithiation-delithiation is negligible, which increases the cycle life of the battery. Finally, the diffusion coefficient of Li+ in LTO (2 × 10−8 cm2 s−1) is larger than in graphite, which, added to the fact that the dendritic effect is avoided, increases importantly the rate capability. The LTO anode has two drawbacks. The energy density of the cells equipped with LTO anode is lower compared with the same cells with graphite anode, because the capacity of LTO is limited to 175 mAh g−1, and because of the higher redox potential. The main drawback, however, is the low electrical conductivity (10−13 S cm−1) and ionic conductivity (10−13–10−9 cm2 s−1). Different strategies have been used to address this drawback: nano-structuration of LTO to reduce the path of Li+ ions and electrons inside LTO, ion doping, and incorporation of conductive nanomaterials. The synthesis of LTO with the appropriate structure and the optimized doping and the synthesis of composites incorporating conductive materials is thus the key to achieving high-rate capability. That is why a variety of synthesis recipes have been published on the LTO-based anodes. The progress in the synthesis of LTO-based anodes in recent years is such that LTO is now considered a substitute for graphite in lithium-ion batteries for many applications, including electric cars and energy storage to solve intermittence problems of wind mills and photovoltaic plants. In this review, we examine the different techniques performed to fabricate LTO nanostructures. Details of the synthesis recipes and their relation to electrochemical performance are reported, allowing the extraction of the most powerful synthesis processes in relation to the recent experimental results.

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“…It is concluded that Li 4 Ti 5 O 12 has excellent multiplying power and cycling ability . In the study of Li 4 Ti 5 O 12 synthesis via the gel method, it is found that nano-Li 4 Ti 5 O 12 with high purity and good stoichiometric properties can be obtained at 750 °C and higher calcination temperature. , At different temperatures, the cyclic properties of Li 4 Ti 5 O 12 anode materials are also different . Zhang et al modified industrial Li 4 Ti 5 O 12 material with NH 4 F dry method at low temperature in air.…”

Section: Mo Anode Materialsmentioning

confidence: 99%

A Comprehensive Review on Metal-Oxide Nanocomposites for High-Performance Lithium-Ion Battery Anodes

Chen

Zhang

2021

Energy Fuels

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In recent years, lithium-ion batteries (LIBs) have been widely used in the fields of small electronic devices, wearable electronic devices, and electric vehicles, because of their high energy density and good rate performance. Commercial LIBs generally use carbonaceous materials as anodes. Although carbonaceous materials have the advantages of low price and simple manufacture, carbonaceous anodes such as graphite have a fatal flaw, that is, their theoretical capacity is only 372 mA h g −1 , which will greatly limit the development of large-capacity LIBs. The development of highperformance anode materials is essential for the further application of LIBs. Many works show that by further adopting reasonable structural design to manufacture nanocomposites, better performance can be obtained. In this review, we introduce and discuss the development of metal oxide (MO) and MO nanocomposites for LIB anodes. Some advanced nanostructures of MO nanocomposites, such as core−shell structure, low-dimensional structure, and porous structure, are summarized. This review comprehensively analyzes the application of MO nanocomposites for LIB anodes in recent years.

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Synthesis and performance of Li4Ti5O12 anode materials using the PVP-assisted combustion method

Cited by 12 publications

References 18 publications

Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties

Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties

Fabrication of Li4Ti5O12 (LTO) as Anode Material for Li-Ion Batteries

A Comprehensive Review on Metal-Oxide Nanocomposites for High-Performance Lithium-Ion Battery Anodes

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