Electrochemistry of polyacetylene, (CH)x. Characteristics of polyacetylene cathodes

Abstract

The relationship of cell potential to degree of oxidation, coulombic and energy efficiencies, constant-current discharge characteristics, energy density and maximum power density of a partly oxidized polyacetylene, [CH(ClO,),] 0, < 0.07), cathode in a cell of the type [CH(ClO,),],ILiClO,ILi are discussed. Coulombic efficiencies ranging from 100 to 86 % and energy efficiencies ranging from 8 1 to 68 %during a chargedischarge cycle are found at oxidation levels ranging from 1.54 to 6.0%. Energy densities of ca. 255 W h kg-' (based on the weights of the electroactive materials involved in the discharge process) are obtained for 7.0% oxidized polyacetylene cathodes under constant-current discharge conditions. Maximum power densities of ca. 30 kW kg-' are observed.

Voltammetric characterization of soluble polyacetylene derivatives obtained from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes

“…The films were more stable during reductive doping, but the charge capacity still decayed significantly after extended potential cycling. Polyacetylene is known to be highly reactive after either n-or ptype doping; 45 ,46 thus, the lack of long-term stability of poly-RCOT films is consistent with this reactivity. Despite this lack of long-term stability, reliable, reproducible electrochemical information could be obtained using freshly prepared poly-RCOT films.…”

Electrocopolymerization kinetics of a binary mixture of 3‐chloroaniline 2‐amino‐4‐phenylthiazole and characterization of the obtained block copolymer films

“…The enthalpy and entropy of activation for the electrocopolymerization reaction can be calculated from the k 2 …”

“…A few popular examples of conducting polymers are polyacetylene, polyaniline, polypyrrole, and polythiophene, which have potential applications in electric display, 1 as electrode materials in batteries, [2][3][4][5][6][7] as molecular electronic circuit elements, 8 in restoration of data, 9 as gas sensors, 10 -12 in biochemical analysis [13][14][15][16][17] and as corrosion inhibitors to protect semiconductor and metals. 18 -23 Conducting polymers containing two compounds can be prepared as copolymers, composites, bilayers, or blends to improve the physical, chemical, mechanical, and electrical properties.…”

Electrocopolymerization of a binary mixture of pyrrole and 2‐amino‐4‐phenylthiazole: Kinetic studies, copolymer structure, and applications as corrosion protection for mild steel in acid medium

“…Electropolymerization of conducting polymers form a relatively new class in polymer science and have the potential of being used in a large number of different applications in batteries, [1][2][3][4][5][6] electrochromic devices, [7][8][9] microelectronic devices, 10 sensors, [11][12][13][14][15][16][17][18] and as corrosion inhibitors to protect semiconductors and metals. [19][20][21][22][23][24] Conducting polymers containing two compounds can be prepared as copolymers, composites, bilayers, or blends.…”