Analysis of ion diffusion and charging in electronically conducting polydicarbazole films by impedance methods

被引：17
作者：
Garcia-Belmonte, G
Pomerantz, Z
Bisquert, J
Lellouche, JP
Zaban, A
机构：
[1] Univ Jaume 1, Dept Ciencies Expt, E-12080 Catello, Spain
[2] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel
来源：
ELECTROCHIMICA ACTA | 2004年 / 49卷 / 20期
关键词：
polydicarbazole; ionic diffusion; doping kinetics; charging;
D O I：
10.1016/j.electacta.2004.03.009
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An electrochemical impedance analysis of the doping kinetics of polydicarbazole films is reported. Polymer films of varying thickness were analyzed using an impedance model that considers spatially-restricted diffusion of ionic species. The main bulk parameters for diffusion and charge accumulation during doping were determined from fits. These parameters resulted independent of film thickness after considering the experimental error. The equilibrium (bulk) capacitance C-0 varies in the range of 100-800 F cm(-3). The chemical diffusion coefficient D varies within the range of 10(-10) to 10(-8) cm(2) s(-1) and increases as the steady-state potential reaches the oxidation peak potential. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3413 / 3417
页数：5
相关论文
共 22 条
[1]   Effects of the Gaussian energy dispersion on the statistics of polarons and bipolarons in conducting polymers [J].
Bisquert, J ;
Garcia-Belmonte, G ;
García-Cañadas, J .
JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (14) :6726-6733
[2]   An explanation of anomalous diffusion patterns observed in electroactive materials by impedance methods [J].
Bisquert, J ;
Garcia-Belmonte, G ;
Pitarch, A .
CHEMPHYSCHEM, 2003, 4 (03) :287-+
[3]   Analysis of the kinetics of ion intercalation. Two state model describing the coupling of solid state ion diffusion and ion binding processes [J].
Bisquert, J ;
Vikhrenko, VS .
ELECTROCHIMICA ACTA, 2002, 47 (24) :3977-3988
[4]   Theory of the electrochemical impedance of anomalous diffusion [J].
Bisquert, J ;
Compte, A .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 499 (01) :112-120
[5]   REDOX CAPACITY AND DIRECT-CURRENT ELECTRON CONDUCTIVITY IN ELECTROACTIVE MATERIALS [J].
CHIDSEY, CED ;
MURRAY, RW .
JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (07) :1479-1484
[6]   Electrochemical polymerization and characterization of a functional dicarbazole conducting polymer [J].
Diamant, Y ;
Furmanovich, E ;
Landau, A ;
Lellouche, JP ;
Zaban, A .
ELECTROCHIMICA ACTA, 2003, 48 (05) :507-512
[7]   Effect of electrode morphology on the diffusion length of the doping process of electronically conducting polypyrrole films [J].
Garcia-Belmonte, G .
ELECTROCHEMISTRY COMMUNICATIONS, 2003, 5 (03) :236-240
[8]   Determination of the electronic conductivity of polybithiophene films at different doping levels using in situ electrochemical impedance measurements [J].
Garcia-Belmonte, G ;
Bisquert, J ;
Popkirov, GS .
APPLIED PHYSICS LETTERS, 2003, 83 (11) :2178-2180
[9]   Impedance analysis of galvanostatically synthesized polypyrrole films. Correlation of ionic diffusion and capacitance parameters with the electrode morphology [J].
Garcia-Belmonte, G ;
Bisquert, J .
ELECTROCHIMICA ACTA, 2002, 47 (26) :4263-4272
[10]   EXPERIMENTAL AND THEORETICAL-STUDIES ON THE REDOX PROPERTIES OF CONDUCTING POLYMERS [J].
HEINZE, J ;
STORZBACH, M ;
MORTENSEN, J .
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1987, 91 (09) :960-967
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