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

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

North Carolina State University

关键词: Polyethylene Glycols;    Lithium Compounds Electrolytes, Nanocomposite;    Nanostructures;    Synthesis;    36 Materials Science;   

DOI  :  10.2172/897873
RP-ID  :  DOE/ER/15248-final
RP-ID  :  FG02-01ER15248
RP-ID  :  897873

美国|英语

来源: UNT Digital Library

【 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