Science China-Materials
·
2022
·Vol. 65
·期 11
·2967-2974
·
IF 8.64
Yu Xinrun,Hu Xianluo
Lithium-metal batteries (LMBs) with high energy densities have aroused intensive interest in electrical energy storage devices but suffer from the risk of thermal runaway, especially under harsh conditions of high temperature or thermal abuse. Pursuing intrinsically thermally stable electrolytes with higher performance and higher safety beyond commercial liquid electrolytes is a major challenge in this field. Here we report on a unique, highly durable sulfolane-based gel electrolyte constructed by a facile gelling strategy. This method takes advantages of thermotolerant sulfolane as a plasticizer and strong dipole-dipole interactions to achieve the gelation of polymer polyvinylidene fluoride/polyethylene oxide. We systematically investigated the influence of gelled sulfolane on gel formation, lithium plating/stripping, and solid electrolyte interphase. Benefiting from favorable interface engineering, the sulfolane-based gel electrolyte remarkably enhances the cyclic and safety performances of LMBs. When used in the Li/LiCoO 2 battery, the resulting gel electrolyte enables long-term cycling stability at high temperatures up to 90°C. Moreover, the thermal safety of practical Li/LiCoO 2 pouch cells (up to 190°C) has also been demonstrated by accelerating rate calorimetry. These results contribute to the development of high-safety LMBs that require abuse tolerance, high energy, and long calendar life.
研究领域:
电化学
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材料科学
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能源存储
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锂离子电池
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界面化学
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高分子科学
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热安全工程
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Can Cheng,Jianjun Li,Jinyan Cao,Jiaxiu Guo,Wanglai Cen
The absorption properties of N-(2-hydroxyethyl) morpholine (HEM), morpholine (MP) and N-(2-aminoethyl) morpholine (AEM) for SO 2 were studied using sulfolane (SUL) as solvent in this work. Among these solvent combinations, HEM/SUL shows the best cyclic absorption performance, and the capacity of HEM-SUL-40 (40 wt% of HEM and 60 wt% of SUL) to absorb 8580 mg/m 3 SO 2 (the remainder is N 2 ) is 192.18 mg/g at 293.15 K. The absorption capacity of the second cycle is 97.5% of the first absorption cycle, which is higher than 70% of the Cansolv amine solution in a commercial application with similar experimental conditions. However, MP/SUL is difficult to desorb at high temperature, and the absorption capacity of AEM/SUL is much lower than HEM/SUL and MP/SUL. According to the FTIR , 1 H NMR and 13 C NMR, all three cyclic amines have charge transfer effects with SO 2 . The structure of HEM/SUL can be recovered after heating, but MP cannot be recovered. Δ r G m ° in the reaction against HEM with SO 2 increases significantly with increasing temperature. The Δ r G m ° of HEM-SO 2 and MP-SO 2 at 353.15 K is −12.56 kJ/mol and −16.29 kJ/mol, respectively, which further explains the easy desorption of HEM-SO 2 and the difficult desorption of MP-SO 2 at high temperature.
研究领域:
化学工程
·
环境科学
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ENERGY INSTITUTE
·
2020
·
IF 4.748
Chao Liu,Min Wei,Fei Wang,Linshan Wei,Xiaoyan Yin,Jianchun Jiang,Kui Wang
Thermochemical conversion of lignocellulosic biomass into value-added chemicals has attracted great interest worldwide. Herein, we report an effective and facile process to transform bamboo into 5-hydroxymethylfurfural (5-HMF), furfural (FF) and levulinic acid (LA) using metal chlorides as catalysts. The effects of the reaction parameters, such as the reaction time, temperature, initial pressure and catalyst loading on the bamboo conversion and product yields were investigated. Notably, the optimum reaction conditions were heating 200 °C for 2 h using 0.75 g of SnCl 4 as catalyst in a 90.0 wt% aqueous sulfolane solution, where the conversion of bamboo was 90.0 wt% forming 41.2 mol% of 5-HMF, 20.1 mol% of FF and 24.6 mol% of LA. The synergistic effect of [Sn(OH) 3 (aq)] + and cation polarization has an important role in the outstanding efficiency and specificity of our selective liquefaction system. Moreover, the water/sulfolane system displays excellent performance for maintaining the Lewis acid active sites in [Sn(OH) 3 (aq)] + . In the process, sulfolane regulates the hydrolysis of SnCl 4 to provide an effective Lewis acid strength. This study sheds light on the remarkable potential of the process for future industrial application.
研究领域:
化学工程
·
生物质能
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-13
·
IF 16.6
Wang Yu,Wang Tairan,Bu Shuyu,Zhu Jiaxiong,Wang Yanbo,Zhang Rong,Hong Hu,Zhang Wenjun,Fan Jun,Zhi Chunyi
Aqueous zinc metal batteries are appealing candidates for grid energy storage. However, the inadequate electrochemical reversibility of the zinc metal negative electrode inhibits the battery performance at the large-scale cell level. Here, we develop practical ampere-hour-scale aqueous Zn metal battery pouch cells by engineering the electrolyte solution. After identifying the proton reduction as the primary source of H 2 evolution during Zn metal electrodeposition, we design an electrolyte solution containing reverse micelle structures where sulfolane molecules constrain water in nanodomains to hinder proton reduction. Furthermore, we develop and validate an electrochemical testing protocol to comprehensively evaluate the cell’s coulombic efficiency and zinc metal electrode cycle life. Finally, using the reverse micelle electrolyte, we assemble and test a practical ampere-hour Zn||Zn 0.25 V 2 O 5 •nH 2 O multi-layer pouch cell capable of delivering an initial energy density of 70 Wh L −1 (based on the volume of the cell components), capacity retention of about 80% after 390 cycles at 56 mA g −1 cathode and ~25 °C and prolonged cycling for 5 months at 56 mA g −1 cathode and ~25 °C.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Guangjie Chen,Guangying Chen,Miao Fa,Yuxian Yang,Yu Wang,Fei Li,Li Sze Lai,Swee Pin Yeap
In order to reduce the regeneration energy consumption of CO2 capture in the postcombustion capture process and explore the regulatory characteristics of phase separation, a series of 1-amino-2-propanol (MIPA)/sulfolane biphasic solutions were proposed to capture CO2. The effects of the molar ratio on the phase separation behavior, CO2 equilibrium absorption, and desorption performances of MIPA/solfolane biphasic absorbents as well as three ternary solutions with the extra addition of ethanolamine (MEA) were investigated comprehensively in experiments. The results showed that the 4M/5M MIPA/sulfolane biphasic solution exhibited excellent performance with higher CO2 loadings in the phase separation point for a CO2-rich liquid (0.4530 mol/mol), better desorption efficiency (85.53%), and relatively low regeneration energy consumption (32% lower than 30 wt % MEA). Besides, MEA has a positive effect on promoting the phase separation of the MIPA/sulfolane solution and reducing the desorption energy consumption. Furthermore, 1H and 13C nuclear magnetic resonance (NMR) spectroscopy was used to explore the reaction and phase separation mechanisms. The results indicated that generated carbamate salts can increase the ionic strength of the aqueous solution, leading to the accumulation of reacted MIPA or MEA in the water phase and the exclusion of sulfolane from water to form a new liquid phase. The results of this work can provide theoretical support for the future industrial application of MIPA/sulfolane biphasic absorbents and offer some guidance for the mechanism exploration of other biphasic solvent systems.
研究领域:
化学工程
·
环境科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yini Yan,Tianqi Yang,Menglu Lu,Yongquan Zheng,Qingru Zhou,Wenkui Zhang,Yang Xia,Hui Huang,Xinhui Xia,Yao Wang,Xinyong Tao,Jun Zhang
The design of an oxidation-resistant electrolyte is crucial for achieving a high-voltage sodium metal battery (SMB) system. However, traditional ester-based electrolyte systems demonstrate limitations in oxidative stability and interfacial compatibility with both high-voltage cathode materials and sodium metal anodes. Herein, we propose a novel sulfolane (SL)-based electrolyte that incorporates a film-forming co-solvent fluoroethylene carbonate and low-viscosity dimethyl carbonate as diluent co-solvent. This innovative design not only broadens the electrochemical window of the electrolyte, but also promotes the formation of a unique weakly-solvated structure. Therefore, the electrolyte can induce in-situ formation of high-quality cathode electrolyte interphase and solid electrolyte interphase on electrodes during battery cycling, along with faster Na + transport kinetics. Consequently, the designed electrolyte achieves a high Coulombic efficiency of 97.9% in Na||Cu cells and a substantial lifespan of 1000 h in Na||Na symmetric cells. Furthermore, Na||Na 3 V 2 (PO 4 ) 2 O 2 F cells exhibit a capacity retention of 93.6% after 300 cycles at a high cut-off voltage of 4.5 V. This study provides valuable insights into the future design of SL-based weakly solvated electrolytes for high-voltage SMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Guangjie Chen,Guangying Chen,Ge Gao,Li Sze Lai,Swee Pin Yeap,Wee Horng Tay,Helei Liu
The utilization of biphasic absorbents for CO2 capture can substantially reduce energy consumption. This study investigated the mass transfer kinetics and thermodynamics of the phase separation absorption process using 1-amino-2-propanol (MIPA)/sulfolane (TMS) biphasic solvents. 13C NMR spectroscopy was employed to analyze the species in different CO2-loaded solutions. The direction and extent of species transfer during the absorption process were elucidated and the phase separation mechanism was explored. CO2 absorption kinetics were studied in a wetted-wall column, and the physicochemical properties and the absorption reaction kinetics data under different experimental conditions were obtained. Results showed the overall mass transfer coefficient (KG) was 1.6 times higher than 30 wt % MEA and twice that of DETA/TMS solution. NMR and kinetic data analysis revealed that phase separation is mainly contributing to the deterioration of the mass transfer process in biphasic solution, reducing the liquid-film mass transfer coefficient (KL) by 63.2% during the phase separation stage. Furthermore, the desorption heats of different biphasic solvents with identical amine concentrations were measured using a microcalorimeter. Findings indicated that TMS did not alter the thermodynamic properties of the solution. Since only the CO2-rich phase is regenerated, the energy consumption is significantly reduced compared to that of MEA.
研究领域:
化学工程
·
环境科学
·
物理化学
·
分析化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2019
·
IF 7.149
Lidong Wang,Shanshan Liu,Rujie Wang,Qiangwei Li,Shihan Zhang
Biphasic solvents containing mixed amines have a phase separation behavior and energy-efficient regeneration for CO2 capture. However, the trade-off between the CO2 absorption capacity and the volume ratio of the CO2-rich phase presents a critical challenge to the reducing potential in regeneration energy consumption. In this study, sulfolane was proposed to regulate the phase separation behavior of a N,N-diethylethanolamine (DEEA)–triethylenetetramine (TETA) biphasic absorbent by simultaneously decreasing the volume ratio and increasing the CO2 loading of the rich phase, without sacrificing the high CO2 capacity. In the DEEA–TETA–sulfolane biphasic absorbent, sulfolane acted as a phase splitter and physical activator. The replacement of a part of H2O by hydrophobic sulfolane contributed to a substantial decrease in the volume ratio of the rich phase from 83 to 39% and an increase in CO2 loading of the rich phase from 3.10 to 4.92 mol/L. The regeneration heat decreased to 1.81 GJ/t CO2, 26.4% less than DEEA–TETA, and 54.6% less than the 5 M monoethanolamine system. Moreover, by promoting the mass transfer coefficient of CO2 in DEEA–TETA–sulfolane to 1.8 times the original DEEA–TETA system, sulfolane was validated as a physical activator. Our study provides a promising strategy for regulating the phase separation behavior of biphasic solvents and enhancing the regeneration energy efficiency for CO2 capture.
研究领域:
化学工程
·
碳捕集与封存
·
分离科学
·
能源效率
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Chunjie Liu,Dong Wang,Zimeng Wang,Haiyan Zhang,Liang Chen,Zhong Wei
Freeze-casting (ice templating) is generally used to prepare super-macroporous materials. However, water solubility limits the application of freeze-casting in hydrophobic material fabrication. In the present work, inexpensive and low-toxic sulfolane was used as a novel crystallization-induced porogen (sulfolane crystal templating) to prepare super-macroporous hydrophobic monoliths (cryogels) with tunable polarity. The phase transition of sulfolane consisted of reversible processes in the liquid, semi-crystalline, and crystalline states. Because of the density change during phase transition, liquid sulfolane experienced a 16.4% volume shrinkage per unit mass. Thus, the cryogels obtained using the conventional freezing method contained obvious hollow-shaped defects. Furthermore, a novel route of pre-cooling, pre-crystallization, crystal growth, freezing, and thawing (PPCFT) was employed to prepare cryogels with defect-free macroscopic morphology and uniform pore structure. The as-obtained cryogels were composed of a super-macroporous structures and interconnected channels, and their porosity ranged between 85 and 97%. Moreover, the cryogels manifested good hydrophobicity (contact angle = 120–130°) and had absorption capacities greater than 10 g g–1 for oils and organic liquids. The maximum absorption capacities of the resultant cryogels in dichloromethane, ethyl acetate, and liquid paraffin were 60.3, 35.8, and 15.2 g g–1, respectively. Moreover, sulfolane could conveniently dissolve hydrophobic and hydrophilic monomers to generate amphiphilic cryogels (contact angle = 130–0°). Therefore, sulfolane crystal templating is a potential fabrication method for super-macroporous hydrophobic materials with tunable polarity.
研究领域:
材料科学
·
化学工程
·
高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2017
·
IF 0
Fang Wang,Houzhen Chen,Qixing Wu,Riguo Mei,Yang Huang,Xu Li,Zhongkuan Luo
Aprotic lithium–air batteries have recently drawn considerable attention due to their ultrahigh specific energy. However, the chemical and electrochemical instability of the electrolyte is one of the most critical issues that need to be overcome. To increase the stability and maintain a relatively high conductivity of the lithium ion, a mixed electrolyte of sulfolane (TMS) and N,N-dimethylacetamide (DMA) was evaluated and tested in an aprotic lithium–air battery. The physical and chemical characterizations showed that the mixed electrolyte exhibited a relatively low viscosity, high ionic conductivity and oxygen solubility, and good stability. In addition, it was found that lithium–air batteries with an optimized electrolyte composition (DMA/TMS = 20:80, % v/v) showed a better cycle life and lower charge overpotential as compared to those with electrolytes with a single solvent, either DMA or TMS.
研究领域:
电化学
·
储能
·
材料科学
·
电池技术
✓ 已验证
DOI
IONICS
·
2018
·Vol. 24
·期 7
·2147-2155
·
IF 2.347
Li Jian,Meng Pengyu,Zhou Hongming
Lithium difluoro(oxalate)borate (LiODFB) is acknowledged as a new type of electrolyte lithium salt with great potential for high-voltage lithium-ion batteries. Utilizing Raman spectroscopy, a conductivity tester, and a viscometer, this study concentrates on the solution structures and properties of LiODFB-solvent systems. The results demonstrated that in the sulfolane (SL) solvent, the main coordination form is among the Li + cation. The ODFB − anion and SL molecules form an ionic solvation as a contact ion pair (CIP). The content of free Li + cations is very considerable, which is beneficial to improve the solubility and conductivity of LiODFB in the SL solvent. In the dimethyl carbonate (DMC) solvent, the main coordination form is ionic association as an aggregate (AGG). In addition, the solvent can display the comprehensive superiority of the SL solvent and LiODFB salt when a high concentration is dissolved in the SL-DMC as a mixed solvent.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2018
·
IF 3.024
Shoutao Ma,Jinfang Li,Lumin Li,Xianyong Shang,Shikai Liu,Changyong Xue,Lanyi Sun
The separation of benzene and cyclohexane is considered to be one of the most challenging processes in the petrochemical industry. In this paper, low transition temperature mixtures (LTTMs) were used as solvents for the separation of benzene and cyclohexane. The selected LTTMs were sulfolane–tetrabutylammonium bromide 5:1 and ethylene glycol–trimethylamine hydrochloride 5:1, and liquid–liquid equilibrium (LLE) data of benzene–cyclohexane–LTTMs were experimentally determined at 40 °C under a normal atmosphere. Moreover, the effects of the mole ratio of hydrogen bond donor (HBD) sulfolane and hydrogen bond acceptor (HBA) tetrabutylammonium bromide on extraction performance were also observed based on the LLE data. It is found that, when the mole ratio of sulfolane to tetrabutylammonium bromide is 5:1, LTTM has the best extraction performance. In addition, the LLE data of the benzene–cyclohexane–LTTMs ternary system were used to fit parameters of the NRTL activity coefficient model. Based on the NRTL model the continuous extraction process was simulated and the operating parameters were obtained, and high product purity (cyclohexane 0.997) and high recovery efficiency (cyclohexane 93.28% and benzene 98.25%) can be achieved. In conclusion, the LTTM sulfolane–tetrabutylammonium bromide 5:1 is a promising solvent for the extractive separation of benzene–cyclohexane mixtures.
研究领域:
化学工程
·
分离科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）