Accession Number : ADA187164
Title : Lithium/Polymer Electrolyte Interfacial Instability.
Descriptive Note : Technical rept.,
Corporate Author : SALFORD UNIV (ENGLAND) DEPT OF CHEMISTRY
Personal Author(s) : Murugesamoorthi, K. A. ; Owen, John R.
Report Date : 26 OCT 1987
Pagination or Media Count : 22
Abstract : The stability of evaporated lithium with polyethylene oxide (PEO), polypropylene oxide (PPO) and oxyethlylene-oxymethylene copolymer, doped with lithium perchlorate, in ultra thin film cells, was studied by impedance spectroscopy at room temperature. The formation and growth of a passivating film at the lithium/PEO interface has been observed, under open circuit conditions. The thickness of the passivating layer was estimated by assuming the dielectric constant of the interfacial product. Compared to PEO, a more extensive interfacial reaction was observed in the case of PPO. A very fast interfacial reaction was observed between lithium and amorphous copolymer.
Descriptors : *LITHIUM, *SOLID ELECTROLYTES, *POLYMERIC FILMS, *ELECTRODES, AMORPHOUS MATERIALS, CELLS, CIRCUITS, CONSTANTS, COPOLYMERS, DIELECTRIC PROPERTIES, FILMS, IMPEDANCE, INTERFACES, LITHIUM PERCHLORATE, POLYPROPYLENE, QUICK REACTION, ROOM TEMPERATURE, SPECTROSCOPY, THICKNESS, THIN FILMS, POLYETHYLENE PLASTICS, STABILITY, ELECTRICAL RESISTANCE, PASSIVITY.
Subject Categories : Physical Chemistry
Electrical and Electronic Equipment
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE