Self-Assembled Silica Nano-Composite Polymer Electrolytes: Synthesis, Rheology & Electrochemistry

Khan, Saad A.: Fedkiw Peter S. ; Baker, Gregory L.

关键词: COMPOSITE MATERIALS;    NANOSTRUCTURES;    ELECTROCHEMISTRY;    ELECTROLYTES;    FILLERS;    POLYETHYLENE GLYCOLS;    RHEOLOGY;    SILICA;    SYNTHESIS;    LITHIUM COMPOUNDS electrolytes;    nanocomposite;   

DOI  :  10.2172/897873
RP-ID  :  DOE/ER/15248-final
PID  :  OSTI ID: 897873
Others  :  TRN: US200709%%442

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The ultimate objectives of this research are to understand the principles underpinning nano-composite polymer electrolytes (CPEs) and facilitate development of novel CPEs that are low-cost, have high conductivities, large Li+ transference numbers, improved electrolyte-electrode interfacial stability, yield long cycle life, exhibit mechanical stability and are easily processable. Our approach is to use nanoparticulate silica fillers to formulate novel composite electrolytes consisting of surface-modified fumed silica nano-particles in polyethylene oxides (PEO) in the presence of lithium salts. We intend to design single-ion conducting silica nanoparticles which provide CPEs with high Li+ transference numbers. We also will develop low-Mw (molecular weight), high-Mw and crosslinked PEO electrolytes with tunable properties in terms of conductivity, transference number, interfacial stability, processability and mechanical strength