Composite solid electrolytes(CSEs) containing polymer matrices and inorganic fillers hold promise for the next generation of solid-state batteries.However,the role of residual solvents in CSEs remains controversial.Th...Composite solid electrolytes(CSEs) containing polymer matrices and inorganic fillers hold promise for the next generation of solid-state batteries.However,the role of residual solvents in CSEs remains controversial.This study investigated the evolution and function of the residual solvent in a polymer-Li_2B_(12)H_(12) CSE.A partial reaction occurred between Li_2B_(12)H_(12) and solvent N,N-dimethylformamide(DMF),which produced dimethylaminomethanol(DMAM) in the CSE.Density functional theory calculations have revealed that DMA M forms stronger hydrogen bonds with polyvinylidene fluoride chains than DMF,which can have a plasticizing effect on the polymer matrix,leading to lower crystallinity and quicker segment motion.Therefore,this CSE exhibited improved Li-ion conducting properties,enabling the stable cycling of Li‖LiFePO_(4) solid-state batteries.This study provided insights into the role of residual solvents in CSEs.展开更多
Vesicle structured Sn_(4)P_(3)@P/N co-doped carbon nanocomposites(Sn_(4)P_(3)@PNC)were facilely prepared via in situ low temperature synthesis and investigated as anodes for sodium/lithium-ion batteries.Sn_(4)P_(3)@PN...Vesicle structured Sn_(4)P_(3)@P/N co-doped carbon nanocomposites(Sn_(4)P_(3)@PNC)were facilely prepared via in situ low temperature synthesis and investigated as anodes for sodium/lithium-ion batteries.Sn_(4)P_(3)@PNC exhibits excellent rate performance and long-term cycling stability.展开更多
基金financially supported by the National Natural Science Foundation of China (Nos.51971146,51971147,52171218 and 52271222)Shanghai Municipal Science and Technology Commission (No.21010503100)+3 种基金the Major Program for the Scientific Research Innovation Plan of Shanghai Education Commission (No.2019-01-07-00-07-E00015)Shanghai Outstanding Academic Leaders Plan,Guangxi Key Laboratory of Information Materials (Guilin University of Electronic Technology,201017-K)Shanghai Rising-Star Program (No.20QA1407100)General Program of Natural Science Foundation of Shanghai (No.20ZR1438400)。
文摘Composite solid electrolytes(CSEs) containing polymer matrices and inorganic fillers hold promise for the next generation of solid-state batteries.However,the role of residual solvents in CSEs remains controversial.This study investigated the evolution and function of the residual solvent in a polymer-Li_2B_(12)H_(12) CSE.A partial reaction occurred between Li_2B_(12)H_(12) and solvent N,N-dimethylformamide(DMF),which produced dimethylaminomethanol(DMAM) in the CSE.Density functional theory calculations have revealed that DMA M forms stronger hydrogen bonds with polyvinylidene fluoride chains than DMF,which can have a plasticizing effect on the polymer matrix,leading to lower crystallinity and quicker segment motion.Therefore,this CSE exhibited improved Li-ion conducting properties,enabling the stable cycling of Li‖LiFePO_(4) solid-state batteries.This study provided insights into the role of residual solvents in CSEs.
基金the National Natural Science Foundation of China(Nos.51971146 and 21905174)Shanghai Science and Technology Commission(No.21010503100)+3 种基金the Innovation Program of Shanghai Municipal Education Commission(No.2019-01-07-00-07-E00015)Shanghai Outstanding Academic Leaders Planthe support of Shanghai Rising-Star Program(No.21QA1406500)supported by HPC Platform of University of Shanghai for Science and Technology。
文摘Vesicle structured Sn_(4)P_(3)@P/N co-doped carbon nanocomposites(Sn_(4)P_(3)@PNC)were facilely prepared via in situ low temperature synthesis and investigated as anodes for sodium/lithium-ion batteries.Sn_(4)P_(3)@PNC exhibits excellent rate performance and long-term cycling stability.
