Comparative study of the behavior of anions in polypyrrole films

2005 ◽  
Vol 50 (7-8) ◽  
pp. 1523-1528 ◽  
Author(s):  
U. Johanson ◽  
M. Marandi ◽  
T. Tamm ◽  
J. Tamm
Keyword(s):  
Comparative Study ◽  
Polypyrrole Films

A Comparative Study on Thin Poly-N-methylpyrrole and Polypyrrole Films

1992 ◽  
Vol 57 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Petr Novák ◽  
Wolf Vielstich
Keyword(s):  
Comparative Study ◽  
Electrochemical Performance ◽  
Redox Potential ◽  
Propylene Carbonate ◽  
Doping Level ◽  
Cycle Number ◽  
Polypyrrole Films ◽  
The Poor ◽  
Battery Application

Growth, cycling, and overoxidation of thin poly-N-methylpyrrole (PMePy) films was studied in 0.5 M LiClO4-propylene carbonate electrolyte. N-methylpyrrole starts to polymerize at about 3.53 V vs Li/Li+. The redox potential of PMePy is about 0.6 V more positive than that of polypyrrole (PPy). The overoxidation thresholds of both PMePy and PPy are, however, almost identical (3.8-3.9 V vs Li/Li+). Low doping levels, of the order of y ≈ 25%, are therefore reached during the nearly reversible potentiodynamic cycling of PMePy in the 2.0-4.0 V range, in contrast to y ≈ 42% attainable on polypyrrole (PPy) under the same conditions. Continuous slight decrease of the coulombic capacity of the polymer with the cycle number, attributed to an irreversible overoxidation, is observed. Addition of 1 vol% of water into the growth electrolyte does not improve the doping level of the PMePy film. Due to the poor electrochemical performance of thin PMePy films with respect to battery application, higher energy densities as offered from the Li/PPy system are not to be expected.

Comparative Study of Electrochemomechanical Deformations of Poly(3-alkylthiophene)s, Polyanilines and Polypyrrole Films

2001 ◽  
Vol 40 (Part 1, No. 12) ◽  
pp. 7110-7116 ◽  
Author(s):  
Masaki Fuchiwaki ◽  
Wataru Takashima ◽  
Keiichi Kaneto
Keyword(s):  
Comparative Study ◽  
Polypyrrole Films

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution

Structural and functional properties of Escherichia coli-derived nucleoplasmin A comparative study of recombinant and natural proteins

2001 ◽  
Vol 268 (6) ◽  
pp. 1739-1748
Author(s):  
Aitor Hierro ◽  
Jesus M. Arizmendi ◽  
Javier De Las Rivas ◽  
M. Angeles Urbaneja ◽  
Adelina Prado ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Comparative Study ◽  
Functional Properties ◽  
Structural And Functional Properties
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