JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Lan Yang,Lingzong Meng,Tongjie Ge,Dan Li,Tianlong Deng,Yafei Guo
The solubilities in the MCl–M2B4O7–H2O (M = Li, Na) systems at 323.15 K were studied with the isothermal solid–liquid equilibrium method. Both the phase diagrams in the above systems belong to the simple eutectic type. Combining the Pitzer binary parameters of LiCl and NaCl obtained from the literatures, the lacking Pitzer binary parameters of Li2B4O5(OH)4 and Na2B4O5(OH)4, Pitzer mixing parameters θCl–,B4O5(OH)42–, ψLi+,Cl–,B4O5(OH)42–, and ψNa+,Cl–,B4O5(OH)42–, and the solubility product constants of Li2B4O5(OH)4·H2O and Na2B4O5(OH)4·8H2O at 298.15 and 323.15 K were fitted with the experimental solubility data by the Pitzer model. The agreement between the experimental water activities and calculated results with parameters fitted with solubilities in the system LiCl–Li2B4O7–H2O at 298.15 K shows that the parameters fitted with solubilities are reliable. The comparison between the experimental and calculated solubilities of the two systems at 298.15 and 323.15 K shows that calculated solubility data are in agreement with 0.03 of experimental results in the two systems.
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Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-15
·
IF 23.655
Guo Cong,He Lu,Yao Yihang,Lin Weizhi,Zhang Yongzheng,Zhang Qin,Wu Kai,Fu Qiang
The phase change materials possess conformable configuration to the structure of Li-ion batteries in macro-scale and multidirectional thermal pathways for rapid and uniform heat transfer in micro-scale.
Hierarchically structured phase change materials achieve dual-mode thermal management ability for heating and cooling Li-ion batteries.
Excellent practical battery thermal management performance was verified by 18,650 Li-ion batteries in both cold and hot environments.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Ao Zhou,Zhihong Liu,Zhiyong Liu
With the imminent peak in the retirement of rechargeable lithium-ion batteries worldwide, the development of efficient methods for recycling valuable elements from LIBs has attracted considerable attention. In this work, a novel method of NH 4 HSO 4 reduction roasting-selective ammonia leaching was proposed to thoroughly separate Li and Mn from the spent LiMn 2 O 4 cathode materials . Using the TG-DSC-FTIR, XRD, SEM-EDS and ICP methods, the detailed mechanism of reduction roasting process was revealed, showing that the Mn 4+ and Mn 3+ in the spinel structure of LiMn 2 O 4 were reduced by the NH 4 + from the molten ammonium salt, and transformed into water-soluble MnSO 4 and Li 2 Mn 2 (SO 4 ) 3 . According to the water-leaching performance of the roasting products, the sulfation conversion rate of Mn reaches 98.1 %, while Li is almost completely transformed under the optimal roasting conditions (475 ℃, 60 min). Using the NH 3 ·H 2 O-air leaching-system, complete separation of Li and Mn can be achieved. It was shown that the introduction of air into the ammonia solution at a rate of 0.2 L/min under the optimal leaching condition leads to Mn precipitation in the form of nanoscale Mn 3 O 4 particles with a precipitation rate of over 99.99 %, while Li still remains completely leached. Based on the in situ detection of the oxidation reduction potential and pH during the selective leaching, the key mechanism of efficient Mn precipitation was revealed. that is, the increasing potential accelerates the oxidation of Mn(OH) 2 , and the rapid consumption of Mn(OH) 2 promotes the hydrolysis of Mn 2+ , thereby achieving a significant improvement in the separation efficiency of Li and Mn.
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ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Peibo Gao,Shixing Xu,Zhangwei Chen,Xi Huang,Zhihao Bao,Changshi Lao,Guangming Wu,Yongfeng Mei
Carbon hosts have been utilized to obtain composite cathodes with high sulfur loadings for Li–S batteries. However, the complicated synthesis process may hinder their practical applications. Their mechanical and electrochemical properties shall be further improved. Herein, a facile scalable dip-coating process is developed to synthesize a flexible composite cathode with a high sulfur loading. Via the process, a hybrid composed of carbon nanotubes, carbon black, sulfur, and titania nanoparticles is successfully conformally coated on the carbonized textile (c-textile). The formed flexible c-textile@S/TiO2 cathodes with sulfur loadings of 1.5 and 3.0 mg cm–2 can deliver reversible discharge capacities of 860 and 659 mA h g–1 at 2 C, respectively. For the latter one, it can retain 94% of the initial capacity after 400 cycles with a high Coulombic efficiency (∼96%). When its sulfur loading is further increased to 7.0 mg cm–2, its areal capacity reaches 5.2 mA h cm–2. Such excellent performance is ascribed to the synergy effect of the three-dimension conductive hierarchical pore structure and TiO2 additive. They can physically and chemically entrap the soluble polysulfides in the composite cathode. The as-synthesized free-standing composite electrode is of low cost and a high areal capacity, making it suitable for flexible energy storage applications based on Li–S batteries.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Hongshan Wang,Guangyong Zeng,Zhaomei Yang,Xi Chen,Ludan Wang,Yuan Xiang,Xiangdong Zeng,Zhenhua Feng,Binbin Tang,Xudong Yu,Ying Zeng
With the consumption of lithium resources increasing year by year, the investigation of high-performance salt lake lithium extraction technology is extremely important. In order to effectively separate Mg 2+ and Li + from brine, a novel charge-positive nanofiltration (NF) membrane with high permeability and excellent Mg 2+ /Li + separation factor was designed by interfacial polymerization (IP) in this work. A B15C5-MX-NF membrane was fabricated by blending hydrophilic two-dimensional (2D) MXene nanosheets into a PES membrane substrate to enhance the permeability, followed by the modification of polyamide (PA) layer with a crown ether molecule (Benzo-15-crown-5) to optimize the surface properties of membrane. The PA layer thickness was effectively reduced (58 nm) due to the enhancement in the interaction between the substrate membrane and PEI by the incorporation of MXene, while the addition of B15C5 provided additional Li + permeation channels. The B15C5-MX-NF membrane exhibited excellent permeability (16.1 L·m −2 ·h −1 ·bar −1 ) and superior selectivity for Mg 2+ /Li + ( S Li, Mg of 15.8) under the dual optimization of membrane substrate and PA layer. In addition, it was demonstrated by molecular dynamics (MD) simulations that the B15C5 molecules in the B15C5-MX-NF membranes had a specific recognition ability of Li + to allow its preferential permeation, thereby enhancing the Mg 2+ /Li + selectivity of the membranes. This study provides a new idea for the preparation of NF membranes for efficient Mg 2+ /Li + separation.
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Journal of Sustainable Metallurgy
·
2023
·Vol. 9
·期 4
·1456-1465
·
IF 2.4
Li Hui-Fang,Li Li-Juan,Ji Lian-Min,Shi Dong
To develop a more stable and more efficient extraction system, a novel amide extraction system, containing extractant N , N -bis(2-ethylhexyl) acetamide (N523) and diluent diisobutyl ketone (DIBK), was proposed in this work. A series of operation conditions, such as the concentration of initial lithium in aqueous phase, the volume ratio of N523 and DIBK, phase ratio of O / A , the molar ratio of Fe/Li, were carried out. The lithium extraction rate reached up to 92% under the optimal extraction conditions. Considering the mass transfer of two phases and consumption of extractant, the three-stage counter-current extraction experiment was conducted. After 6 cycles experiment of the three stage counter-current extraction, the lithium extraction rate reached 99.89% and the separation factor of Li/Mg, Li/Na, Li/K, and Li/Ca were 103,300, 5288, 5233, and 760.4, respectively. The stoichiometry of the complex was LiFeCl 4 ·N523 by the slope method. The results indicated that N523-DIBK extraction system was effective to recovery of lithium from salt lake brine with high mass ratio of Mg/Li. Furthermore, the extraction thermodynamics study revealed lithium extraction was an exothermic process, which meant lower temperature promoted lithium extraction. Graphical Abstract
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MATERIALS RESEARCH INNOVATIONS
·
2023
·
IF 0
Yunhang Liu,Jiale Han,Yurii Mishchenko,Andrii Butenko,Vladyslav Kovalenko,Hongyuan Zhao
Herein, a novel electrochemical sensor was designed for the sensitive determination of methyl parathion (MP) using the Super P Li carbon black@β-cyclodextrin (SPLCB@β-CD) decorated glassy carbon electrode (GCE). SPLCB with high electroactive area exhibited exceptional conductivity and good dispersive property, which is beneficial for forming the interlinked conductive network structure. β-CD could not only promote the uniform dispersion of SPLCB but also effectively realise the enrichment of MP molecules. Moreover, the existence of SPLCB could make up for the defect of poor conductivity of β-CD. Under the optimal experimental condition (pH = 7.0, enrichment time: 60 s). The collaborative cooperation of SPLCB and β-CD achieved the excellent MP detection property (LOD: 8.6 nM; concentration range: 0.01–10 μM). The SPLCB@β-CD/GCE sensor exhibited acceptable repeatability and reproducibility. In addition, the proposed sensor was successfully employed to detect MP in apple juice (Recoveries: 98.0–98.6%, RSD values: 3.68–4.63%).
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Honghu Li,Nuoya Chen,Weifeng Liu,Huazhang Feng,Jingyun Su,Dongju Fu,Xuguang Liu,Mingxia Qiu,Luyang Wang
The prosperity of the lithium-ion battery industry has raised deep concerns about spent batteries. Recently, much attention has been focused on the development and advancement of lithium battery recycling. Deep eutectic solvents are efficient, environmentally friendly, and economical leaching solvents with great potential for the recovery of cathode materials from spent lithium-ion batteries. However, to date, deep eutectic solvents have been considered a disposable agent for lithium-ion battery recycling, resulting in organic waste after a single recycling. Here, we demonstrate a reusable deep eutectic solvent based on maleic acid (MA) and ethylene glycol (EG), designed to recycle LiCoO 2 cathode materials from spent lithium-ion batteries. With a high loading capacity (59 g/L), the leaching efficiencies of Co and Li by MA:EG are 98.3 % and 98.4 % respectively. MA:EG can be refreshed by adding oxalic acid as a precipitant. Even after 4 cycles, the leaching efficiency of Co is still 90 % and the average recovery efficiency of Co products is over 96.5 %. Lithium is present in a high concentration and is also recovered in the form of oxalate. This work provides a novel and environmentally friendly recycling route that can economically and efficiently recover the valuable metals Li and Co from spent lithium-ion batteries.
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JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7184-7192
·
IF 2.1
Yang Shengyan,Chang Niannian,Han Mengyuan,Zhang Yang
Pb-free piezoelectric ceramic materials (K 0.48 Na 0.48 Li 0.04 )(Nb 0.92 Ta 0.08− x Sb x )O 3 (KNLNTS) were designed and prepared. The effects of varied Sb/Ta doping on the physical structure, surface morphology, and electrical characteristics of ceramics were also studied. The perovskite structure is present in all of the doped ceramic samples without any secondary phase (when x < 0.05). All of the doped ceramic samples have a Curie temperature ( T C ) above 300°C. At the same time, the orthorhombic–tetragonal phase transition temperature ( T O–T ) is pushed closer to ambient temperature. Doping with Sb/Ta/Li changed the electrical characteristics of the samples and increased their piezoelectric properties. At x = 0.03, the KNLNTS sample has the best piezoelectric properties: d 33 = 215 pC/N, Pr = 26.08 μC/cm 2 , T C = 342.6°C.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Rui Zhang,Yihong Guo,Jianguo Yu,Sen Lin
Lithium/aluminum layered double hydroxide imprinted with SO 4 2- (ILDH) was prepared to enhance the lithium adsorption performance in low grade sulfate-type brines. The systematical characterization confirmed the ILDH had a morphology of two-dimensional lamella that was less randomly arranged than the traditional lithium/aluminum layered double hydroxide (TLDH). ILDH demonstrated a significantly enhanced adsorption performance in the long-term adsorption–desorption cycle replying on the excellent structural stability from the imprinting effects compared to TLDH. The adsorption capacity of ILDH was about 3.0 mg/g after 10 cycles, and the column experiments manifested that the Mg 2+ /Li + mass ratio could be significantly declined from 57.99 in the Yiliping sulfate-type brine to 2.36 in the desorption solution with 2.77 mg/g Li + adsorption capacity at room temperature .
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ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Bohan Li,Xiaolong Ren,Zhouyang Qin,Chong Wang,Liangliang Li,Chenhui Luan,Wanci Shen,Feiyu Kang,Ruitao Lv,Ding Nan,Zheng-Hong Huang
Flexible lithium ion capacitors (FLICs) integrating the advantages of high energy batteries and high power capacitors are promising for wearable electronic devices. However, the imbalance of the two electrodes in kinetics and capacity impedes their practicable application. To address this challenge, in this article, metal-organic frameworks (MOFs) were introduced to the fiber precursors of both anode and cathode materials to improve the electrochemical performance. Free-standing Cu-BTC derived CuS x /CF-1.5 anode material and ZIF-8 derived Zn-PCF-900 °C cathode material were separately prepared through the facile blow-spinning technique. Benefitting from the uniformly carbon-encapsulated CuS x nanoparticles , multilevel mesoporous structure of the CuS x /CF-1.5 anode and the hierarchical pore structure , large BET surface area of the Zn-PCF-900 °C cathode, Li-ion capacitor (LIC) based on these electrodes can effectively alleviate both the kinetic and capacity imbalance and deliver remarkable energy and power densities (106 Wh kg −1 at 243 W kg −1 , 10 Wh kg −1 at 90 kW kg −1 ). In addition, the FLIC pouch cell also demonstrates its chargeable ability under different bending conditions, revealing good application prospects in high-performance flexible electronic devices.
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ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Shuokun Sun,Xiaoyan Xia,Fei Wang,Mingrui Gao,Wei Wei,Shichuang Cui,Quanyao Zhu
Electrochromic materials have garnered significant interest owing to their eco-friendliness, energy efficiency, and ease of use. Among these materials, vanadium-based compounds are regarded as highly promising; however, they are plagued by issues such as ion channel collapse, capacity loss, and inadequate cycling stability when employed in aqueous solutions. The present study involves the compounding of KV 3 O 8 ·0·75H 2 O (KVO) into a network composed of linear methylcellulose, leading to the development of a self-supporting cellulose composite KVO electrochromic film. Specifically, the doping of K was found to disrupt the preferential orientation of the V 2 O 5 (001) crystal plane and to widen the interplanar spacing to 6.9 Å. Furthermore, Cellulose was discovered to remarkably increase the viscosity of the solute (6 times) and to undertake the function of a "reinforcing agent". The methylcellulose composite KVO film's electrochromic properties were then investigated in a 1 mol L − 1 LiClO 4 non-aqueous electrolyte. Consequently, the film was able to switch between green-yellow and orange-red, and it was also capable of conserving more than 67% of its charge capacity after 2000 cycles. More importantly, flexible electrochromic devices were assembled from KVO/MC films. A self-healing LiClO 4 /PC (LOC)-based gel electrolyte composed of Ethene, 1‑chloro‑1,2,2‑trifluoro-, polymer with 1,1‑difluoroethene (P(CTFE‑VDF)) and Li + electrolyte was developed, which was highly compatible with the device. The device possessed a high color efficiency of 78.8 cm 2 C − 1 , and achieved fast response (≤5.6 s) and long service life (>77% of the charge capacity and 70% of the optical contrast after 10,000 cycles). This design presents considerable potential for the fabrication of large area (12 × 15 cm 2 ) flexible devices.
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