首页|Quasi-Solid-State Electrolyte Membranes Based on Helical Mesoporous Polysilsesquioxane Nanofibers for High-Performance Lithium Batteries
Quasi-Solid-State Electrolyte Membranes Based on Helical Mesoporous Polysilsesquioxane Nanofibers for High-Performance Lithium Batteries
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
Background: To solve the safety problem aroused by Li dendrites and liquid electrolytes for lithium batteries, this work reported a new solid-state electrolyte technology. Method: Helical mesoporous 1,4-phenylene bridged and 1,2-ethylidene bridged polysilsesquioxane nanofibers were firstly prepared via a sol-gel transcription method, using self-assembled chiral gelator as the template and organic bridged-siloxane as the precursor. After immersing them in ion liquid electrolyte till absorption saturation, two self-standing ionogel electrolyte membranes (EB-IE and EE-IE) were obtained. Significant findings: Electrochemical test showed that they exhibited good thermal stability (up to 327C and 293 C, respectively), wide electrochemical window (4.8 V and 5.6 V, respectively) and ideal room temperature ionic conductivity (up to 0.55 and 2.10 mS cm(-1), respectively), which was related to their special organic-inorganic hybrid composition and hierarchical porous nanostructure. When they were applied as electrolyte as well as separator in a LiFePO4/Li cell, they performed excellent cycle stability and superior rate performance, which proved the practicability and feasibility of design and application of nanostructured hybrid polymer as quasi solid state electrolyte scaffold for safe lithium batteries.
NSTL
Elsevier
