Development of aluminosilicate polyelectrolytes for solid-state battery applications
- Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
- Basic Industrial Research Lab., Evanston, IL (United States)
The authors have synthesized and characterized a range of novel polyelectrolytes containing weakly basic aluminosilicate anions in the polymer backbone in order to achieve t{sub +} = 1 and high ionic mobility. Room-temperature conductivity is observed to increase in the series: [NaAl(OEOMe){sub 2} ((OE){sub x}O){sub 2/2}]{sub n} < [NaAl(OR){sub 2}(OSiMe{sub 2}(CH{sub 2}){sub 3}(OE){sub x}O(CH{sub 2}){sub 3}SiMe{sub 2}O){sub 2/2}]{sub n} < [NaAl(OSiR{sub 3})(OSiMe{sub 2}(CH{sub 2}){sub 3}(OE){sub x}O(CH{sub 2}){sub 3}SiMe{sub 2}O){sub 3/2}]{sub n}. This trend is ascribed to reduced ion pairing due to decreasing anion basicity, and lowered T{sub g} resulting from increasing siloxy character. The addition of cryptang [2.2.2] increases conductivity by 1--1.5 orders of magnitude. A maximum room-temperature conductivity is observed at a ratio of {approx}10 etheric oxygens/cation. Related lithium polymer electrolytes were evaluated in mechanically joined solid state Li{vert_bar}PE{vert_bar}[Li{sub x}Mn{sub 2}O{sub 4}-C-PE] cells.
- OSTI ID:
- 162920
- Report Number(s):
- CONF-950412--; ISBN 1-55899-296-0
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhanced ion mobility in aluminosilicate/polysiloxane network polyelectrolytes
Aluminosilicate/poly(ethylene glycol) copolymers: A new class of polyelectrolytes
Related Subjects
36 MATERIALS SCIENCE
ALUMINIUM SILICATES
CARBON
CURRENT DENSITY
ELECTRIC BATTERIES
ELECTRIC CHARGES
ELECTRIC CONDUCTIVITY
ELECTRIC DISCHARGES
EXPERIMENTAL DATA
LITHIUM
LITHIUM OXIDES
MANGANESE OXIDES
ORGANIC POLYMERS
PERFORMANCE TESTING
SODIUM COMPOUNDS
SOLID ELECTROLYTES
SYNTHESIS
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE