Electrochemistry of polyacetylene, (CH)x. Characteristics of the reduced polyacetylene electrode
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 80 (8) , 2109-2118
- https://doi.org/10.1039/f19848002109
Abstract
The coulombic efficiency, stability, constant-current discharge characteristics, energy density, power density and the relation of cell potential to degree of reduction of a partly reduced polyacetylene cathode, [Li+ y(CHy–)]x(y⩽ 0.1), in a cell of the type [Li+ y(CHy–)]x|LiClO4(tetrahydrofuran)|Li have been investigated. Coulombic efficiencies of ca. 100% are found at reduction levels up to 10 mol%. In its completely charged state the cell consists of parent, neutral (CH)x which appears to be stable indefinitely in the electrolyte. In the discharged state the [Li+ y(CHy–)]x cathode also appears to be stable indefinitely in the electrolyte up to 7 mol% reduction, the highest level at which long-term stability studies have been carried out. Energy densities of ca. 201 W h kg–1(based on the weights of the electroactive materials involved in the discharge process) are obtained for 10 mol% reduced polyacetylene cathodes under constant-current discharge conditions. Maximum power densities of ca. 2900 W kg–1 are observed.Keywords
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