Formation of lithium-selective sorbent in nanoreactors of the support based on titanium dioxide

Rozhdestvenska, L. M.; Chaban, M. O.; Dzyazko, Yuliya; Palchik, O. V.; Dzyazko, O. G.

doi:10.1007/s13204-021-01832-5

Cited by 6 publications

(3 citation statements)

References 26 publications

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“…The sample's pore-size-distribution curve shows a bimodal pore-size distribution, with most pores constituted of micropores and mesopores less than 3.5 nm and an average pore width of 2.20 nm, representing mesoporous characteristics. It is worth mentioning that the computed BET-specific surface area of our T-Nb2O5 nanoparticles is much greater than that of previously reported Li-ion battery anodes [22,23,27,31] and Li-selective adsorbates [45][46][47][48]. The high specific surface area, large pore volume, and critical micro-and mesopores of T-Nb2O5 would be advantageous because they provide many electro-active sites for the uptake and release of Li + ions from the electrolyte during repeated charge-discharge cycling.…”

Section: Structural Characterizationsmentioning

confidence: 85%

Facile Synthesis of Ordered Mesoporous Orthorhombic Niobium Oxide (T-Nb2O5) for High-Rate Li-Ion Storage with Long Cycling Stability

et al. 2023

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Herein, we describe the synthesis and evaluation of hierarchical mesoporous orthorhombic niobium oxide (T-Nb2O5) as an anode material for rechargeable lithium-ion batteries (LIB). The as-synthesized material addresses key challenges such as beneficial porous structure, poor rate capability, and cycling performance of the anode for Li-ion devices. The physicochemical characterization results reveal hierarchical porous nanostructure morphology with agglomerated particles and a 20 to 25 nm dimension range. Moreover, the sample has a high specific surface area (~65 m2 g−1) and pore volume (0.135 cm3 g−1). As for the application in Li-ion devices, the T-Nb2O5 delivered an initial discharging capacity as high as 225 mAh g−1 at 0.1 A g−1 and higher rate capability as well as remarkable cycling features (~70% capacity retention after 300 cycles at 250 mA g−1) with 98% average Coulombic efficiency (CE). Furthermore, the scan rate-dependent charge storage mechanism of the T-Nb2O5 electrode material was described, and the findings demonstrate that the electrode shows an evident and highly effective pseudocapacitive Li intercalation behaviour, which is crucial for understanding the electrode process kinetics. The origin of the improved performance of T-Nb2O5 results from the high surface area and mesoporous structure of the nanoparticles.

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Section: Structural Characterizationsmentioning

confidence: 85%

Facile Synthesis of Ordered Mesoporous Orthorhombic Niobium Oxide (T-Nb2O5) for High-Rate Li-Ion Storage with Long Cycling Stability

et al. 2023

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“…Various works reported the use of nitric acid, or persulfates of sodium and potassium to have a less aggressive environment for the ion sieve structure. [77,84,154] Other powder morphologies were also explored, such as nanoribbons and nanotubes hydrothermally prepared and lithiated, that were able to reach impressive adsorption values of 160 mg Li g −1 from a 2000 mg Li L −1 . [63,76,78] Carbon microspheres with sea urchinlike Li 4 Ti 5 O 12 shell were also investigated.…”

Section: Lto-type Lismentioning

confidence: 99%

Recent Advances in the Lithium Recovery from Water Resources: From Passive to Electrochemical Methods

et al. 2022

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The ever-increasing amount of batteries used in today's society has led to an increase in the demand of lithium in the last few decades. While mining resources of this element have been steadily exploited and are rapidly depleting, water resources constitute an interesting reservoir just out of reach of current technologies. Several techniques are being explored and novel materials engineered. While evaporation is very time-consuming and has large footprints, ion sieves and supramolecular systems can be suitably tailored and even integrated into membrane and electrochemical techniques. This review gives a comprehensive overview of the available solutions to recover lithium from water resources both by passive and electrically enhanced techniques. Accordingly, this work aims to provide in a single document a rational comparison of outstanding strategies to remove lithium from aqueous sources. To this end, practical figures of merit of both main groups of techniques are provided. An absence of a common experimental protocol and the resulting variability of data and experimental methods are identified. The need for a shared methodology and a common agreement to report performance metrics are underlined.

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“…However, high capacitance values can be obtained only for nanosized TiO 2 particles, which are inserted into a conductive matrix with enough open pores since this oxide is dielectric. This distinguishes the composites used for PsC electrodes from sorbents, where the active component is distributed throughout the volume of crystalline [ 15 , 16 ] or amorphous [ 17 ] titanium dioxide.…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

et al. 2022

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The electrochemical properties of the highly porous reduced graphene oxide/titanium dioxide (rGO/TiO2) nanocomposite were studied to estimate the possibility of using it as a supercapacitor electrode. Granular aerogel rGO/TiO2 was used as an initial material for the first time of manufacturing the electrode. For the aerogel synthesis, industrial TiO2 Hombikat UV100 with a high specific surface area and anatase structure was used, and the aerogel was carried out with hydrazine vapor. Porous structure and hydrophilic–hydrophobic properties of the nanocomposite were studied with a method of standard contact porosimetry. This is important for a supercapacitor containing an aqueous electrolyte. It was found that the hydrophilic specific surface area of the nanocomposite was approximately half of the total surface area. As a result of electrochemical hydrogenation in the region of zero potential according to the scale of a standard hydrogen electrode, a reversible Faraday reaction with high recharge rate (exchange currents) was observed. The characteristic charging time of the indicated Faraday reaction does not exceed several tens of seconds, which makes it possible to consider the use of this pseudocapacitance in the systems of fast energy storage such as hybrid supercapacitors. Sufficiently high limiting pseudo-capacitance (about 1200 C/g TiO2) of the reaction was obtained.

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Formation of lithium-selective sorbent in nanoreactors of the support based on titanium dioxide

Cited by 6 publications

References 26 publications

Facile Synthesis of Ordered Mesoporous Orthorhombic Niobium Oxide (T-Nb2O5) for High-Rate Li-Ion Storage with Long Cycling Stability

Facile Synthesis of Ordered Mesoporous Orthorhombic Niobium Oxide (T-Nb2O5) for High-Rate Li-Ion Storage with Long Cycling Stability

Recent Advances in the Lithium Recovery from Water Resources: From Passive to Electrochemical Methods

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

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