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

2021 ◽  
Author(s):  
Xudong Zheng ◽  
Ang Li ◽  
Dandan Wang ◽  
Da Xia ◽  
Yuzhe Zhang ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Sea Water ◽  
Hydrothermal Reaction ◽  
Salt Lake ◽  
Selective Adsorption ◽  
Lithium Ion ◽  
Nuclear Industry ◽  
Maximum Adsorption Capacity ◽  
Lithium Ions ◽  
Adsorption Effect

Abstract 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.

scholarly journals Simple One-Pot Synthesis of Hexagonal ZnO Nanoplates as Anode Material for Lithium-Ion Batteries

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Haipeng Li ◽  
Yaqiong Wei ◽  
Yan Zhao ◽  
Yongguang Zhang ◽  
Fuxing Yin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Active Sites ◽  
Hydrothermal Reaction ◽  
Strain Relaxation ◽  
Lithium Ion ◽  
Lithium Ions ◽  
One Pot ◽  
Large Contact Area ◽  
Physical And Chemical ◽  
Microstructure Of The Material

Hexagonal ZnO nanoplates were synthesizedviasimple one-pot hydrothermal reaction of Zn(CH3COO)2and CO(NH2)2. XRD, SEM, and HRTEM were used to investigate the composition and microstructure of the material. Together with the facile strain relaxation during structure and volume change upon cycling, this plate-like structure of ZnO is favorable for physical and chemical interactions with lithium ions because of its large contact area with the electrolyte, providing more active sites and short diffusion distances. The resulting hexagonal ZnO nanoplates electrode exhibited good cyclability and delivered a reversible discharge capacity of 368 mAh g−1after 100 cycles at 0.1 C.

scholarly journals Fabrication of Diatomite/Silicalite-1 Composites and Their Property for VOCs Adsorption

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 551 ◽  
Author(s):  
Yutong Liu ◽  
Tao Tian
Keyword(s):  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Adsorption Capacity ◽  
Organic Compounds ◽  
Hydrothermal Reaction ◽  
Selective Adsorption ◽  
Maximum Adsorption Capacity ◽  
Voc Adsorption ◽  
Hierarchical Porous ◽  
Volatile Organic

Adsorption technology is an effective method to remove volatile organic compounds (VOCs). In this work, we prepared hierarchical porous materials using modified diatomite (Dt) as a support and nano-sized silicalite-1 (S-1) seeds as inorganic fillers, which were applied to adsorb volatile organic compounds (VOCs). The characterization of the composites indicated that S-1 was successfully coated onto the surface of modified Dt, and the best surface area of the composites was 398.8 m2/g, nearly 40 times as large as Dt. The adsorption capacities of Dt/S-1 composites for three probe VOCs (ethyl acetate, acetone, and toluene) were rather superior to Dt, and the composites had preferential adsorption selectivity for ethyl acetate. Effects of seeded zeolite contents and hydrothermal conditions for the adsorption capacity of composites were discussed in this paper. The composite seeded with 5 wt% S-1 zeolite, which was subsequently synthesized by hydrothermal reaction at 100 °C for four days, showed the maximum adsorption capacity (1.31 mmol/g for ethyl acetate). The pseudo second-order model provided a perfect fit to adsorption kinetics, while the Langmuir model agreed the best with the adsorption isotherms. In addition, the composites had selective adsorption to ethyl acetate among these three probes VOCs. The regeneration experiments were also carried out, and the adsorption efficiency of the adsorbents was still up to 67% after five adsorption–desorption cycles. The hierarchical porous Dt/S-1 composites have an excellent VOC adsorption performance, satisfactory selectivity, and recycling ability.

Functionalized Mesoporous Silicas with Crown Ether Moieties for Selective Adsorption of Lithium Ions in Artificial Sea Water

2014 ◽  
Vol 14 (11) ◽  
pp. 8845-8851 ◽  
Author(s):  
Sung Soo Park ◽  
Madhappan Santha Moorthy ◽  
Hyun-Jin Song ◽  
Chang-Sik Ha
Keyword(s):  
Crown Ether ◽  
Sea Water ◽  
Selective Adsorption ◽  
Mesoporous Silicas ◽  
Lithium Ions

scholarly journals Electromigration Separation of Lithium Isotopes: The Effect of Electrode Solutions

2022 ◽  
Author(s):  
Ciming Wang ◽  
Pengrui Zhang ◽  
Chaochi Huang ◽  
Qian Zhang ◽  
Huiqun Ju ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Isotope Separation ◽  
Lithium Ion ◽  
Nuclear Industry ◽  
Lithium Isotope ◽  
Lithium Ions ◽  
Lithium Isotopes ◽  
Electrode Solutions ◽  
Organic Solutions

Abstract Both lithium-6 and lithium-7 with high abundance are indispensable materials in nuclear industry. Here, an aqueous solution│organic solution│aqueous solution system was fabricated to separate lithium isotopes. The effects of species and concentration of electrolytes in the electrode solutions on the lithium ions migration and lithium isotope separation with different voltages and migration time was studied. It was found that lithium-7 was enriched in aqueous solutions on both sides at 0 V and 2 V, while lithium-7 was enriched in anode solution and lithium-6 was enriched in cathode solution at 16 V. The weakening stability of the chelate consisted of crown ether and lithium ion with increasing voltage was believed to the possible reason. Meanwhile, the variation of electrolyte in electrode solution led to notable changes in migration ratio of lithium ions and lithium isotope separation effect, which can be attributed to the different degree of both ionization and hydrolysis for various electrolytes in aqueous solutions and the different ability of H+ and NH4+ to replace Li+ of chelate in organic solutions. This work is of great significance for the selection of electrode solutions in electromigration separation of lithium isotopes and even other electrochemical systems.

scholarly journals Characterizing Bacterial Cellulose Produced byKomagataeibacter sucrofermentans H-110 on Molasses Medium and Obtaining a Biocomposite Based on It for the Adsorption of Fluoride

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1422
Author(s):  
Viktor V. Revin ◽  
Alexander V. Dolganov ◽  
Elena V. Liyaskina ◽  
Natalia B. Nazarova ◽  
Anastasia V. Balandina ◽  
...  
Keyword(s):  
Composite Material ◽  
Adsorption Capacity ◽  
Bacterial Cellulose ◽  
Functional Materials ◽  
Degree Of Crystallinity ◽  
Maximum Adsorption Capacity ◽  
Fluoride Ions ◽  
Sorption Ability ◽  
Wide Range ◽  
Biocomposite Material

Currently, there is an increased demand for biodegradable materials in society due to growing environmental problems. Special attention is paid to bacterial cellulose, which, due to its unique properties, has great prospects for obtaining functional materials for a wide range of applications, including adsorbents. In this regard, the aim of this study was to obtain a biocomposite material with adsorption properties in relation to fluoride ions based on bacterial cellulose using a highly productive strain of Komagataeibacter sucrofermentans H-110 on molasses medium. Films of bacterial cellulose were obtained. Their structure and properties were investigated by FTIR spectroscopy, NMR, atomic force microscopy, scanning electron microscopy, and X-ray structural analysis. The results show that the fiber thickness of the bacterial cellulose formed by the K. sucrofermentans H-110 strain on molasses medium was 60–90 nm. The degree of crystallinity of bacterial cellulose formed on the medium was higher than on standard Hestrin and Schramm medium and amounted to 83.02%. A new biocomposite material was obtained based on bacterial cellulose chemically immobilized on its surface using atomic-layer deposition of nanosized aluminum oxide films. The composite material has high sorption ability to remove fluoride ions from an aqueous medium. The maximum adsorption capacity of the composite is 80.1 mg/g (F/composite). The obtained composite material has the highest adsorption capacity of fluoride from water in comparison with other sorbents. The results prove the potential of bacterial cellulose-based biocomposites as highly effective sorbents for fluoride.

A lithium ion-imprinted adsorbent using magnetic carbon nanospheres as a support for the selective recovery of lithium ions

Carbon ◽  
2021 ◽  
Vol 176 ◽  
pp. 651
Author(s):  
Qi Liang ◽  
Er-hui Zhang ◽  
Guang Yan ◽  
Yong-zhen Yang ◽  
Wei-feng Liu ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Carbon Nanospheres ◽  
Lithium Ions ◽  
Selective Recovery ◽  
Ion Imprinted ◽  
Magnetic Carbon

scholarly journals Fabrication of microcapsule extinguishing agent with core-shell structure for lithium-ions battery fire safety

2021 ◽  
Author(s):  
Weixin Zhang ◽  
Lin Wu ◽  
Dujin Qiao ◽  
Jie Tian ◽  
Yan Li ◽  
...  
Keyword(s):  
Large Scale ◽  
Urea Formaldehyde ◽  
Lithium Ion ◽  
Formaldehyde Resin ◽  
Shell Material ◽  
Lithium Ions ◽  
Safety Issues ◽  
Fire Extinguishing ◽  
New Type ◽  
Core Shell Structure

Safety issues limit the large-scale application of lithium-ion batteries. In this work, a new type of N-H-microcapsule fire extinguishing agent is prepared by using melamine-urea-formaldehyde resin as shell material, perfluoro(2-methyl-3-pentanone)...

scholarly journals Aging Mechanisms of Electrode Materials in Lithium-Ion Batteries for Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Cheng Lin ◽  
Aihua Tang ◽  
Hao Mu ◽  
Wenwei Wang ◽  
Chun Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electrochemical Behaviour ◽  
Lithium Ion ◽  
Storage Conditions ◽  
Carbon Anode ◽  
Side Reactions ◽  
Metallic Oxide ◽  
Lithium Ions ◽  
Aging Mechanisms

Electrode material aging leads to a decrease in capacity and/or a rise in resistance of the whole cell and thus can dramatically affect the performance of lithium-ion batteries. Furthermore, the aging phenomena are extremely complicated to describe due to the coupling of various factors. In this review, we give an interpretation of capacity/power fading of electrode-oriented aging mechanisms under cycling and various storage conditions for metallic oxide-based cathodes and carbon-based anodes. For the cathode of lithium-ion batteries, the mechanical stress and strain resulting from the lithium ions insertion and extraction predominantly lead to structural disordering. Another important aging mechanism is the metal dissolution from the cathode and the subsequent deposition on the anode. For the anode, the main aging mechanisms are the loss of recyclable lithium ions caused by the formation and increasing growth of a solid electrolyte interphase (SEI) and the mechanical fatigue caused by the diffusion-induced stress on the carbon anode particles. Additionally, electrode aging largely depends on the electrochemical behaviour under cycling and storage conditions and results from both structural/morphological changes and side reactions aggravated by decomposition products and protic impurities in the electrolyte.

scholarly journals Spontaneous aggregation of lithium ion coordination polymers in fluorinated electrolytes for high-voltage batteries

2016 ◽  
Vol 18 (16) ◽  
pp. 10846-10849 ◽  
Author(s):  
Christos D. Malliakas ◽  
Kevin Leung ◽  
Krzysztof Z. Pupek ◽  
Ilya A. Shkrob ◽  
Daniel P. Abraham
Keyword(s):  
Phase Separation ◽  
Coordination Polymers ◽  
High Voltage ◽  
Lithium Ion ◽  
Lithium Ions ◽  
Spontaneous Formation ◽  
Spontaneous Aggregation

We report delayed spontaneous formation of solvate coordination polymers of lithium ions and their aggregation and phase separation in fluorinated electrolytes.

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