The rising need for efficient and sustainable energy storage systems has led to increased interest in the use of advanced electrolytes consisting of deep eutectic solvents(DESs) and ionic liquids(ILs).These electrolyt...The rising need for efficient and sustainable energy storage systems has led to increased interest in the use of advanced electrolytes consisting of deep eutectic solvents(DESs) and ionic liquids(ILs).These electrolytes are appealing candidates for supercapacitors,next-generation lithium-ion batteries,and different energy storage systems because of their special features including non-flammability,low volatility,lowtoxicity,good electrochemical stability,and good thermal and chemical stability.This review explores the advantages of the proposed electrolytes by examining their potential to address the critical challenges in lithium battery technology,including safety concerns,energy density limitations,and operational stability.To achieve this,a comprehensive overview of the lithium salts commonly employed in rechargeable lithium battery electrolytes is presented.Moreover,key physicochemical and functional attributes of ILs and DESs,such as electrochemical stability,ionic conductivity,nonflammability,and viscosity are also discussed with a focus on how these features impact battery performance.The integration of lithium salts with ILs and DESs in modern lithium battery technologies,including lithium-ion(Li-ion) batteries,lithium-oxygen(Li-O_(2)) batteries,and lithium-sulfur(Li-S) batteries,are further examined in the study.Various electrochemical performance metrics including cycling stability,charge/discharge profiles,retention capacity and battery's couiombic efficiency(CE) are also analyzed for the above-mentioned systems.By summarizing recent advances and challenges,this review also highlights the potential of electrolytes consisting of DESs and ILs to enhance energy density,durability,and safety in future energy storage applications.Additionally future research directions,including the molecular optimization of ILs and DESs,optimizing lithium salt compositions,and developing scalable synthesis methods to accelerate their practical implementation in next-generation energy storage applications are also explored.展开更多
Despite the significance of hydrogen bonding in deep eutectic solvents（DESs） for desulfurization processes, little is understood about the relationship between the DES composition, hydrogen-bonding strength, and oxi...Despite the significance of hydrogen bonding in deep eutectic solvents（DESs） for desulfurization processes, little is understood about the relationship between the DES composition, hydrogen-bonding strength, and oxidative desulfurization activity. In this study, a new family of caprolactam-based acidic DESs was prepared with different molar ratios of caprolactam and oxalic acid. The prepared DESs were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, 1 H nuclear magnetic resonance, and thermogravimetric analyses. These DESs were employed for oxidative desulfurization reactions and the desulfurization efficiency was found to vary regularly with the DES composition. The factors influencing the removal of dibenzothiophene were systematically investigated and the desulfurization efficiency of the caprolactam-based acidic DESs reached as high as 98% under optimal conditions. The removal of different sulfur compounds followed the order： dibenzothiophene 4,6-dimethyldibenzothiophene benzothiophene. The combined experimental data and characterization results revealed that the oxidative desulfurization efficiency of the system was influenced by the hydrogen bonding interactions with the DES, which can be optimized by adjusting the DES composition. These findings regarding hydrogen bonding in DESs provide new insight for better understanding of the mechanism of diesel deep desulfurization processes.展开更多
In recent years,deep eutectic solvents have attracted increasing interest as effective extractants for the separation of both organic substances and metals from various objects.Acid-based deep eutectic solvents are mo...In recent years,deep eutectic solvents have attracted increasing interest as effective extractants for the separation of both organic substances and metals from various objects.Acid-based deep eutectic solvents are most often used as extractants for the extraction of metals.In this work,for the first time,the extraction efficiency of transition metals and rare earth elements(Y,Zr,Nb,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Hf and Ta)from mining tailings and Na,K,Ca,Mg,Cu,Fe,Mn,Pb,Ba,Ni and Sr from biodiesel samples using acidic deep eutectic solvents and saturated aqueous solutions of the same acids(malonic,malic,tartaric and citric)is compared.For this,deep eutectic solvents based on acids and their aqueous saturated solutions were prepared and studied.The prepared mixtures were analyzed by IR spectroscopy to confirm the formation of eutectic solvents.Properties such as the density and viscosity of the resulting mixtures were also investigated,as this can be of key importance for the efficiency of metal extraction.The extraction of rare earth metals from mining tailings took a long time(up to several days),while the extraction of metals from fuel took no more than 30 min.Atomic emission spectral methods were used as an analysis method.It is shown that the extraction efficiency with aqueous solutions is better than that with eutectic solvents,which casts doubt on the need for deep eutectic solvents use in this area.展开更多
文摘The rising need for efficient and sustainable energy storage systems has led to increased interest in the use of advanced electrolytes consisting of deep eutectic solvents(DESs) and ionic liquids(ILs).These electrolytes are appealing candidates for supercapacitors,next-generation lithium-ion batteries,and different energy storage systems because of their special features including non-flammability,low volatility,lowtoxicity,good electrochemical stability,and good thermal and chemical stability.This review explores the advantages of the proposed electrolytes by examining their potential to address the critical challenges in lithium battery technology,including safety concerns,energy density limitations,and operational stability.To achieve this,a comprehensive overview of the lithium salts commonly employed in rechargeable lithium battery electrolytes is presented.Moreover,key physicochemical and functional attributes of ILs and DESs,such as electrochemical stability,ionic conductivity,nonflammability,and viscosity are also discussed with a focus on how these features impact battery performance.The integration of lithium salts with ILs and DESs in modern lithium battery technologies,including lithium-ion(Li-ion) batteries,lithium-oxygen(Li-O_(2)) batteries,and lithium-sulfur(Li-S) batteries,are further examined in the study.Various electrochemical performance metrics including cycling stability,charge/discharge profiles,retention capacity and battery's couiombic efficiency(CE) are also analyzed for the above-mentioned systems.By summarizing recent advances and challenges,this review also highlights the potential of electrolytes consisting of DESs and ILs to enhance energy density,durability,and safety in future energy storage applications.Additionally future research directions,including the molecular optimization of ILs and DESs,optimizing lithium salt compositions,and developing scalable synthesis methods to accelerate their practical implementation in next-generation energy storage applications are also explored.
基金supported by the National Natural Science Foundation of China(21676230,21373177)~~
文摘Despite the significance of hydrogen bonding in deep eutectic solvents（DESs） for desulfurization processes, little is understood about the relationship between the DES composition, hydrogen-bonding strength, and oxidative desulfurization activity. In this study, a new family of caprolactam-based acidic DESs was prepared with different molar ratios of caprolactam and oxalic acid. The prepared DESs were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, 1 H nuclear magnetic resonance, and thermogravimetric analyses. These DESs were employed for oxidative desulfurization reactions and the desulfurization efficiency was found to vary regularly with the DES composition. The factors influencing the removal of dibenzothiophene were systematically investigated and the desulfurization efficiency of the caprolactam-based acidic DESs reached as high as 98% under optimal conditions. The removal of different sulfur compounds followed the order： dibenzothiophene 4,6-dimethyldibenzothiophene benzothiophene. The combined experimental data and characterization results revealed that the oxidative desulfurization efficiency of the system was influenced by the hydrogen bonding interactions with the DES, which can be optimized by adjusting the DES composition. These findings regarding hydrogen bonding in DESs provide new insight for better understanding of the mechanism of diesel deep desulfurization processes.
基金Project supported by the grant from the President of the Russian Federation(MK-806.2022.1.3)。
文摘In recent years,deep eutectic solvents have attracted increasing interest as effective extractants for the separation of both organic substances and metals from various objects.Acid-based deep eutectic solvents are most often used as extractants for the extraction of metals.In this work,for the first time,the extraction efficiency of transition metals and rare earth elements(Y,Zr,Nb,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Hf and Ta)from mining tailings and Na,K,Ca,Mg,Cu,Fe,Mn,Pb,Ba,Ni and Sr from biodiesel samples using acidic deep eutectic solvents and saturated aqueous solutions of the same acids(malonic,malic,tartaric and citric)is compared.For this,deep eutectic solvents based on acids and their aqueous saturated solutions were prepared and studied.The prepared mixtures were analyzed by IR spectroscopy to confirm the formation of eutectic solvents.Properties such as the density and viscosity of the resulting mixtures were also investigated,as this can be of key importance for the efficiency of metal extraction.The extraction of rare earth metals from mining tailings took a long time(up to several days),while the extraction of metals from fuel took no more than 30 min.Atomic emission spectral methods were used as an analysis method.It is shown that the extraction efficiency with aqueous solutions is better than that with eutectic solvents,which casts doubt on the need for deep eutectic solvents use in this area.
