Morphology of Template-Grown Polyaniline Nanowires and Its Effect on the Electrochemical Capacitance of Nanowire Arrays

被引:169
作者
Cao, Yanyan [1 ]
Mallouk, Thomas E. [1 ]
机构
[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA
基金
美国国家科学基金会;
关键词
D O I
10.1021/cm801028a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The morphology of polyaniline nanowires grown electrochemically in anodic aluminum oxide (AAO) templates is strongly influenced by the supporting electrolyte concentration, the potential of electropolymerization, the growth time, and the monomer concentration. Increasing the sulfuric acid concentration during growth induces a transition from solid nanowires with tubular ends to open nanowires. Current transient data for nanowire growth were interpreted quantitatively in terms of instantaneous and progressive nucleation and growth models, and this analysis was consistent with the observed concentration and potential dependence of nanowire vs nanotube growth. The electrochemical capacitance of nanowire arrays in AAO templates was shown to be related to the morphology of the nanowires. Specific capacitance values in the range of 700 F/g (measured at a charge/discharge rate of 5 A/g) were obtained for porous nanowires grown at 0.5 M aniline concentration at high overpotential in 1.5-2.0 M sulfuric acid solutions.
引用
收藏
页码:5260 / 5265
页数:6
相关论文
共 55 条
[1]   NUCLEATION, GROWTH AND BRANCHING OF POLYANILINE FROM MICROELECTRODE EXPERIMENTS [J].
BADE, K ;
TSAKOVA, V ;
SCHULTZE, JW .
ELECTROCHIMICA ACTA, 1992, 37 (12) :2255-2261
[2]   Characterization and long-term performance of polyaniline-based electrochemical capacitors [J].
Bélanger, D ;
Ren, XM ;
Davey, J ;
Uribe, F ;
Gottesfeld, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2000, 147 (08) :2923-2929
[3]  
Cao Y., 2007, POLYM PREPR AM CHEM, V48, P19
[4]   Conducting poly(aniline) nanotubes and nanofibers: Controlled synthesis and application in lithium/poly(aniline) rechargeable batteries [J].
Cheng, FY ;
Tang, W ;
Li, CS ;
Chen, J ;
Liu, HK ;
Shen, PW ;
Dou, SX .
CHEMISTRY-A EUROPEAN JOURNAL, 2006, 12 (11) :3082-3088
[5]   Electrochemical synthesis and fast electrochromics of poly(3,4-ethylenedioxythiophene) nanotubes in flexible substrate [J].
Cho, SI ;
Choi, DH ;
Kim, SH ;
Lee, SB .
CHEMISTRY OF MATERIALS, 2005, 17 (18) :4564-4566
[6]   Nanotube-based ultrafast electrochromic display [J].
Cho, SI ;
Kwon, WJ ;
Choi, SJ ;
Kim, P ;
Park, SA ;
Kim, J ;
Son, SJ ;
Xiao, R ;
Kim, SH ;
Lee, SB .
ADVANCED MATERIALS, 2005, 17 (02) :171-+
[7]   The role and utilization of pseudocapacitance for energy storage by supercapacitors [J].
Conway, BE ;
Birss, V ;
Wojtowicz, J .
JOURNAL OF POWER SOURCES, 1997, 66 (1-2) :1-14
[8]   EFFECT OF ANIONS ON THE NUCLEATION AND GROWTH-MECHANISM OF POLYANILINE [J].
CORDOVA, R ;
DELVALLE, MA ;
ARRATIA, A ;
GOMEZ, H ;
SCHREBLER, R .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 377 (1-2) :75-83
[9]   EXTENT OF INCORPORATION OF HYDROLYSIS PRODUCTS IN POLYANILINE FILMS DEPOSITED BY CYCLIC POTENTIAL SWEEP [J].
CUI, CQ ;
ONG, LH ;
TAN, TC ;
LEE, JY .
ELECTROCHIMICA ACTA, 1993, 38 (10) :1395-1404
[10]   Dielectrophoretically assembled polymer nanowires for gas sensing [J].
Dan, Yaping ;
Cao, Yanyan ;
Mallouk, Tom E. ;
Johnson, Alan T. ;
Evoy, Stephane .
SENSORS AND ACTUATORS B-CHEMICAL, 2007, 125 (01) :55-59