Achieving high energy densities for all-solid-state lithium batteries is restricted by the poor high voltage stability of solid electrolytes.Herein,F-doping strategy is successfully employed on Li_(3)InCl_(6)to obtain...Achieving high energy densities for all-solid-state lithium batteries is restricted by the poor high voltage stability of solid electrolytes.Herein,F-doping strategy is successfully employed on Li_(3)InCl_(6)to obtain enhanced voltage stability and electrode compatability towards bare LiNi_(0.7)Mn_(0.2)Co_(0.1)O_(2)at high voltages.The optimized Li_(3)InCl_(5.5)F_(0.5)electrolyte exhibits a decreased conductivity of 1.00 m S/cm,a wider voltage window,and improved electrochemical performance in solid-state batteries when cycled at upper cut-off voltages of 4.5 and 4.8 V(vs.Li^(+)/Li^(0)).The generation of more stable LiInF4phase in the cathode mixture of Li3InCl5.5F0.5-based battery ensures superior electrochemical performances compared to the Li_(3)InCl_(6)-based battery.The former battery exhibits a higher discharge capacity of 218.9 m Ah/g and coulombic efficiency of 86.7%for the first cycle,and retains 80.0%of its original value after 100 cycles when cycled in the range of 3.0–4.5 V(vs.Li^(+)/Li^(0)).In contrast,the Li_(3)InCl_(6)-based battery exhibits lower capacities and faster degradation under the same conditions due to the formation of InCl^(3)phase with poor electrochemical stability.This work facilitates the advancement of high energy density solid-state battery technologies by utilizing high-voltage cathodes.展开更多
The first total syntheses of bipinnatone A and B have been achieved starting from commercially available phloroglucinol,p-hydroxybenzaldehyde in ten steps.Key features of the syntheses include Aldol reaction,aryl-alky...The first total syntheses of bipinnatone A and B have been achieved starting from commercially available phloroglucinol,p-hydroxybenzaldehyde in ten steps.Key features of the syntheses include Aldol reaction,aryl-alkylation and InCl_3-NaBH_4 selective reduction.展开更多
Solid-state electrolytes with high oxidation stability are crucial for achieving high power density allsolid-state lithium batteries.Halide electrolytes are promising candidates due to their outstanding compatibility ...Solid-state electrolytes with high oxidation stability are crucial for achieving high power density allsolid-state lithium batteries.Halide electrolytes are promising candidates due to their outstanding compatibility with cathode materials and high Li^(+)conductivity.However,the electrochemical stability of chloride electrolytes is still limited,leaving them unsuitable for ultrahigh voltage operation.Besides,chemical compatibility issue between sulfide and halide electrolytes affects the electrochemical performance of all-solid-state batteries.Herein,Li-ion conductor Li_(3+x)InCl_(6-x)O_(x) is designed to address these challenges.Li_(3.25)InCl_(5.75)O_(0.25)shows a Li-ion conductivity of 0.90 mS cm^(-1)at room temperature,a high onset oxidation voltage of 3.84 V,fewer by-products at ultrahigh operation voltage,and good chemical compatibility with Li_(5.5)PS_(4.5)Cl_(1.5).The Li_(3.25)InCl_(5.75)O_(0.25)@LiNi_(0.7)Co_(0.1)Mn_(0.2)O_(2)-Li_(3.25)InCl_(5.75)O_(0.25)-VGCF/Li_(3.25)InCl_(5.75)O_(0.25)/Li_(5.5)PS_(4.5)Cl_(1.5)/Li-In battery delivers good electrochemical performances at high operating voltage.This work provides a simple,economical,and effective strategy for designing high-voltage all-solid-state electrolytes.展开更多
Li Mn_(2)O_(4)(LMO)is the substance of choice for small and medium-sized energy storage materials in daily life.In this work,Li3InCl6(LIC)is prepared on the surface of LiMn_(2)O_(4)by hydrothermal method using InCl_(3...Li Mn_(2)O_(4)(LMO)is the substance of choice for small and medium-sized energy storage materials in daily life.In this work,Li3InCl6(LIC)is prepared on the surface of LiMn_(2)O_(4)by hydrothermal method using InCl_(3)and LiCl as raw materials.This method stabilizes the LMO crystal structure by uniformly coating the LIC on the LMO surface and effectively maintains the morphology of LMO crystals during the cycling process.SEM and EDS analysis confirm the morphology and homogeneity of the synthesized material LIC on the LMO surface.The prepared material is put into a battery,and the charge-discharge test is carried out at 0.5 C and 1 C.The results show that the LIC surface-modified samples exhibit more than 6%higher cycling performance than the unmodified samples after long cycling.展开更多
基金supported by the National Key Research and Development Program of China(No.2021YFB2400300)the National Natural Science Foundation of China(Nos.52177214,22205153)for supporting。
文摘Achieving high energy densities for all-solid-state lithium batteries is restricted by the poor high voltage stability of solid electrolytes.Herein,F-doping strategy is successfully employed on Li_(3)InCl_(6)to obtain enhanced voltage stability and electrode compatability towards bare LiNi_(0.7)Mn_(0.2)Co_(0.1)O_(2)at high voltages.The optimized Li_(3)InCl_(5.5)F_(0.5)electrolyte exhibits a decreased conductivity of 1.00 m S/cm,a wider voltage window,and improved electrochemical performance in solid-state batteries when cycled at upper cut-off voltages of 4.5 and 4.8 V(vs.Li^(+)/Li^(0)).The generation of more stable LiInF4phase in the cathode mixture of Li3InCl5.5F0.5-based battery ensures superior electrochemical performances compared to the Li_(3)InCl_(6)-based battery.The former battery exhibits a higher discharge capacity of 218.9 m Ah/g and coulombic efficiency of 86.7%for the first cycle,and retains 80.0%of its original value after 100 cycles when cycled in the range of 3.0–4.5 V(vs.Li^(+)/Li^(0)).In contrast,the Li_(3)InCl_(6)-based battery exhibits lower capacities and faster degradation under the same conditions due to the formation of InCl^(3)phase with poor electrochemical stability.This work facilitates the advancement of high energy density solid-state battery technologies by utilizing high-voltage cathodes.
基金financial support from the National Natural Science Foundation of China(No.20872053)
文摘The first total syntheses of bipinnatone A and B have been achieved starting from commercially available phloroglucinol,p-hydroxybenzaldehyde in ten steps.Key features of the syntheses include Aldol reaction,aryl-alkylation and InCl_3-NaBH_4 selective reduction.
基金supported by the National Key Research and Development Program of China(2021YFB2500200)the National Natural Science Foundation of China(52177214,52222703)for supporting our workJiangsu Funding Program for Excellent Postdoctoral Talent for the support。
文摘Solid-state electrolytes with high oxidation stability are crucial for achieving high power density allsolid-state lithium batteries.Halide electrolytes are promising candidates due to their outstanding compatibility with cathode materials and high Li^(+)conductivity.However,the electrochemical stability of chloride electrolytes is still limited,leaving them unsuitable for ultrahigh voltage operation.Besides,chemical compatibility issue between sulfide and halide electrolytes affects the electrochemical performance of all-solid-state batteries.Herein,Li-ion conductor Li_(3+x)InCl_(6-x)O_(x) is designed to address these challenges.Li_(3.25)InCl_(5.75)O_(0.25)shows a Li-ion conductivity of 0.90 mS cm^(-1)at room temperature,a high onset oxidation voltage of 3.84 V,fewer by-products at ultrahigh operation voltage,and good chemical compatibility with Li_(5.5)PS_(4.5)Cl_(1.5).The Li_(3.25)InCl_(5.75)O_(0.25)@LiNi_(0.7)Co_(0.1)Mn_(0.2)O_(2)-Li_(3.25)InCl_(5.75)O_(0.25)-VGCF/Li_(3.25)InCl_(5.75)O_(0.25)/Li_(5.5)PS_(4.5)Cl_(1.5)/Li-In battery delivers good electrochemical performances at high operating voltage.This work provides a simple,economical,and effective strategy for designing high-voltage all-solid-state electrolytes.
基金supported by Guangxi Higher Education Key Laboratory of Advanced MaterialsCenter of Ecological Collaborative Innovation for Aluminum Industry in Guangxi+4 种基金CITIC Dameng Mining Industries Limited-Guangxi University Joint Research Institute of Manganese Resources Utilization and Advanced Materials TechnologyGuangxi University-CITIC Dameng Mining Industries Limited Joint Base of Postgraduate CultivationNational Natural Science Foundation of China(No.11364003)Guangxi Innovation Driven Development Project(Nos.AA17204100,AA18118052)the Natural Science Foundation of Guangxi Province(No.2018GXNSFAA138186)。
文摘Li Mn_(2)O_(4)(LMO)is the substance of choice for small and medium-sized energy storage materials in daily life.In this work,Li3InCl6(LIC)is prepared on the surface of LiMn_(2)O_(4)by hydrothermal method using InCl_(3)and LiCl as raw materials.This method stabilizes the LMO crystal structure by uniformly coating the LIC on the LMO surface and effectively maintains the morphology of LMO crystals during the cycling process.SEM and EDS analysis confirm the morphology and homogeneity of the synthesized material LIC on the LMO surface.The prepared material is put into a battery,and the charge-discharge test is carried out at 0.5 C and 1 C.The results show that the LIC surface-modified samples exhibit more than 6%higher cycling performance than the unmodified samples after long cycling.
