(Solid state voltammetry and sensors in gases and other non-ionic media): Performance report, April 1, 1987--March 31, 1988
Progress is briefly described in the design and performance of an electrochemical microcell. This microcell contacts wire tips of 10..mu..m Pt working microelectrode and Ag reference and Pt auxiliary electrodes, sealed in glass and plastic, with a few micrometer thick film of an ionically conducting polymer /open quotes/solvent/close quotes/ containing dissolved electroactive monomers. The other side of the polymer film is contacted by a selected bathing gas from which other reagents can sorb into the polymer as reactants or as plasticizers. Using lithium triflate/poly(ethylene oxide), PEO LiCF/sub 3/SO/sub 3/, as the ionically conducting polymer solvent and species like ferrocene as electroactive solute, we demonstrated that quantitatively interpretable cyclic voltammetry could be carried out. We have recently completed work on a second and more elegant microcell design that defines the three electrodes of the cell microlithographically, with the working electrode being either a 11 /times/ 516 or 11 /times/ 256..mu..m microband or an 11 /times/ 11..mu..m square. Other work concerns electrochemical reactivity in PEO LiCF/sub 3/SO/sub 3/ and other polymer solvents. 5 refs.
- Research Organization:
- North Carolina Univ., Chapel Hill (USA). William R. Kenan, Jr. Labs. of Chemistry
- DOE Contract Number:
- FG05-87ER13675
- OSTI ID:
- 6829700
- Report Number(s):
- DOE/ER/13675-1; ON: DE88014738
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON FLUORIDES
CHALCOGENIDES
CHEMISTRY
DESIGN
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIC CONDUCTIVITY
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYETHYLENES
POLYMERS
POLYOLEFINS
PROGRESS REPORT
SOLVENTS
SULFUR COMPOUNDS
SULFUR OXIDES
SULFUR TRIOXIDE
VOLTAMETRY