Double layer capacitance of Pt(111) single crystal electrodes

被引：208
作者：
Pajkossy, T [1 ]
Kolb, DM [1 ]
机构：
[1] Univ Ulm, Dept Electrochem, D-89069 Ulm, Germany
来源：
ELECTROCHIMICA ACTA | 2001年 / 46卷 / 20-21期
关键词：
platinum; impedance; double layer; capacitance; diffusion; potential of zero charge;
D O I：
10.1016/S0013-4686(01)00597-7
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In order to determine the double layer capacitance of the Pt(111) electrode, impedance and capacitance measurements were carried out in neutral and acidic aqueous perchlorate solutions. Separation of the double layer and adsorption contributions of the interfacial capacitance were based on the adsorption impedance theory. The double layer capacitance versus potential plot exhibits a peak at about 0.12 V versus SCE in the 1.5-7 pH range; from here towards cathodic potentials the capacitance attains a value of about 20 muF/cm(2). The peak may be related to the potential of zero free charge of the Pt(111) electrode. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：3063 / 3071
页数：9
相关论文
共 25 条
  • [1] ALJAAFGOLZE K, 1986, J ELECTROANAL CHEM, V200, P353
  • [2] PREPARATION OF MONO-CRYSTALLINE PT MICROELECTRODES AND ELECTROCHEMICAL STUDY OF THE PLANE SURFACES CUT IN THE DIRECTION OF THE (111) AND (110) PLANES
    CLAVILIER, J
    FAURE, R
    GUINET, G
    DURAND, R
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1980, 107 (01): : 205 - 209
  • [3] Climent V, 1999, INTERFACIAL ELECTROCHEMISTRY, P463
  • [4] DAUM W, 50 ISE M PAV
  • [5] INVESTIGATION OF ELECTRODE REACTIONS BY THE METHOD OF CHARGING-CURVES AND WITH THE AID OF ALTERNATING CURRENTS
    ERSHLER, B
    [J]. DISCUSSIONS OF THE FARADAY SOCIETY, 1947, 1 : 269 - 277
  • [6] Frumkin A., 1951, Dokl. Akad. Nauk SSSR, V77, P855
  • [7] Frumkin A. N., 1980, COMPR TREAT, P221
  • [8] The pzc of Au(111) and Pt(111) in a perchloric acid solution: An ex situ approach to the immersion technique
    Hamm, UW
    Kramer, D
    Zhai, RS
    Kolb, DM
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 414 (01): : 85 - 89
  • [9] DUAL REFERENCE ELECTRODE FOR ELECTROCHEMICAL PULSE STUDIES
    HERRMANN, CC
    PERRAULT, GG
    PILLA, AA
    [J]. ANALYTICAL CHEMISTRY, 1968, 40 (07) : 1173 - &
  • [10] Adsorption of water at Pt(111) electrode in HClO4 solutions. The potential of zero charge
    Iwasita, T
    Xia, XH
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 411 (1-2): : 95 - 102
123