Preparation of Ni-Doped Li2TiO3 Using an Inorganic Precipitation–Peptization Method

Zhang, Li-Yuan; Shui, Yi; Zhao, Lingling; Zhu, Ping; Xu, Wen Yong; You, Yaohui

doi:10.3390/coatings9110701

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…In Figure 2c, the Ti 2p spectrum exhibits the typical doublet of the spin-orbit splitting Ti 2p 3/2 and Ti 2p 1/2 with binding energy at about 458.26 and 464. 08 eV respectively, which matches well with literature data [36,37]. A good agreement is obtained between experimental and fitted spectra using only one deconvolution peak revealing the unique valence state 4+ of Ti ions in Li 2 TiO 3 .…”

Section: Structural and Elemental Analysessupporting

confidence: 89%

Electrochemical Performance of Li2TiO3//LiCoO2 Li-Ion Aqueous Cell with Nanocrystalline Electrodes

et al. 2022

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A challenge in developing high-performance lithium batteries requires a safe technology without flammable liquid electrolytes. Nowadays, two options can satisfy this claim: all-solid-state batteries and aqueous-electrolyte batteries. Commercially available Li-ion batteries utilize non-aqueous electrolytes (NAE) owing to a wide potential window (>3 V) that achieves high energy density but pose serious safety issues due to the high volatility, flammability, and toxicity of NAE. On the contrary, aqueous electrolytes are non-flammable, low-toxic, and have a low installation cost for humidity control in the production line. In this scenario, we develop a new aqueous rechargeable Li-ion full-cell composed of high-voltage cathode material as LiCoO2 (LCO) and a safe nanostructured anode material as Li2TiO3 (LTO). Both pure-phase LTO and LCO nanopowders are prepared by hydrothermal route and their structural and electrochemical properties are studied in detail. Simultaneously, the electrochemical performances of these electrodes are tested in both half- and full-cell configurations in presence of saturated 1 mole L−1 Li2SO4 aqueous electrolyte medium. Pt//LCO and Pt//LTO half-cells deliver high discharge capacities of 142 and 133 mAh g−1 at 0.5 C rate with capacity retention of ~95% and 94% after 50 cycles with a Coulombic efficiency of 98.25% and 99.89%, respectively. The electrochemical performance of a LTO//LCO full cell is investigated for the first time. It reveals a discharge capacity of 135 mAh g−1 at 0.5 C rate (50th cycle) with a capacity retention of 94% and a Coulombic efficiency of 99.7%.

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Section: Structural and Elemental Analysessupporting

confidence: 89%

Electrochemical Performance of Li2TiO3//LiCoO2 Li-Ion Aqueous Cell with Nanocrystalline Electrodes

et al. 2022

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“…At the same time, one of the key requirements for lithium-containing ceramics based on titanates and silicates is an increased resistance to mechanical and radiation damage in the case of their operation in the production of tritium [11][12][13][14][15]. To this end, in the past few years, various options for modification or doping have been proposed to increase stability and productivity, as well as to preserve the materials' structural and strength properties during production of tritium and its absorption and desorption [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

The Synthesis, Properties, and Stability of Lithium-Containing Nanostructured Nickel-Doped Ceramics

Kozlovskiy

Zdorovets

Khametova

et al. 2022

Gels

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Lithium-containing ceramics have several great potential uses for tritium production, as well as its accumulation. However, their use is limited due to their poor resistance to external influences, mechanical pressure, and temperature changes. In this work, initial nanostructured ceramic powders were obtained using the sol-gel method, by mixing TiO2 and LiClO4·3H2O with the subsequent addition of NiO nanoparticles to the reaction mixture; these powders were subsequently subjected to thermal annealing at a temperature of 1000 °C for 10 h. Thermal annealing was used to initiate the phase transformation processes, and to remove structural distortions resulting from synthesis. During the study, it was found that the addition of NiO nanoparticles leads to the formation of solid solutions by a type of Li0.94Ni1.04Ti2.67O7 substitution, which leads to an increase in the crystallinity and structural ordering degree. At the same time, the grain sizes of the synthesized ceramics change their shape from rhomboid to spherical. During analysis of the strength characteristics, it was found that the formation of Li0.94Ni1.04Ti2.67O7 in the structure leads to an increase in hardness and crack resistance; this change is associated with dislocation. When analyzing changes in resistance to cracking, it was found that, during the formation of the Li0.94Ni1.04Ti2.67O7 phase in the structure and the subsequent displacement of the Li2TiO3 phase from the composition, the crack resistance increases by 15% and 37%, respectively, which indicates an increase in the resistance of ceramics to cracking and the formation of microcracks under external influences. This hardening and the reinforcing effect are associated with the replacement of lithium ions by nickel ions in the crystal lattice structure.

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“…On the other hand, the appearance of titanium-based lithium ion sieves compensated for the dissolution of Ti during acid pickling. For example, Shulei Wang, Ping Li and others synthesized β-Li2TiO3 by hydrothermal method of TiO2 and LiOH•H2O (Zhang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of High Specific Surface Lithium ion Sieve Templated by Bacterial Cellulose for Selective Adsorption of Li+

Zheng

Wang

et al. 2021

Preprint

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In recent years, the lithium market has ushered in a golden period of development. With the development of batteries, ceramics, glass, lubricants, refrigerants, the nuclear industry and the optoelectronics industry, the demand for lithium has grown rapidly, and continuous mining has led to scarcity of land resources. On the other hand, due to the rich lithium resources in sea water and salt lake brines. How to selectively adsorb and separate lithium ions from seawater and salt lake brine has attracted more and more scholars' attention and research. Lithium ion sieve stands out because of its excellent performance of specific adsorption and separation of lithium ions. This article reports the preparation of mesoporous TiO2 and LiOH hydrothermal reaction using bacterial cellulose as a biological template. After calcination at 600°C, spinel lithium titanium oxide Li2TiO3 is formed. H2TiO3 was obtained by eluting the precursor with HCl eluent. FT-IR, SEM and XRD were used to characterize Li2TiO3 and H2TiO3. The adsorption performance of H2TiO3 was studied through adsorption pH, adsorption kinetics, adsorption isotherms, competitive adsorption and so on. The results show that H2TiO3 is a single layer chemical adsorption process, which has a good adsorption effect on lithium ions at pH 11.0, with the maximum adsorption capacity can reach 35.45 mg·g− 1. The lithium ion sieve has selective adsorption to Li+, and its distribution coefficient is 2242.548 mL g− 1. It may be predicted that the lithium-ion sieve prepared by biological template has a broad application prospect.

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Preparation of Ni-Doped Li2TiO3 Using an Inorganic Precipitation–Peptization Method

Cited by 9 publications

References 30 publications

Electrochemical Performance of Li2TiO3//LiCoO2 Li-Ion Aqueous Cell with Nanocrystalline Electrodes

Electrochemical Performance of Li2TiO3//LiCoO2 Li-Ion Aqueous Cell with Nanocrystalline Electrodes

The Synthesis, Properties, and Stability of Lithium-Containing Nanostructured Nickel-Doped Ceramics

Synthesis of High Specific Surface Lithium ion Sieve Templated by Bacterial Cellulose for Selective Adsorption of Li+

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