Electrochemical porosimetry

被引:55
作者
Song, HK
Sung, JH
Jung, YH
Lee, KH
Dao, LH
Kim, MH
Kim, HN
机构
[1] Pohang Univ Sci & Technol, Dept Chem Engn, Div Elect & Comp Engn, Pohang 790784, Kyungbuk, South Korea
[2] Inst Natl Rech Sci Energie & Mat, Varennes, PQ J3X 1S2, Canada
[3] LG Chem Ltd, Battery Res Inst, Taejon 305380, South Korea
关键词
D O I
10.1149/1.1641041
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
We have developed electrochemical porosimetry (ECP) for analyzing microstructures of porous electrodes in situ, which can give most meaningful geometric information in electrochemical systems. The methodology is based on a model that relates electrochemical impedance data with microstructural information. Pore length (l(p)), as well as pore size distribution could be obtained by fitting the model to the experimental impedance data of a porous electrode. This geometric information was validated for microporous, mesoporous, and macroporous samples. Also, the ECP could be used as a nondestructive probe to investigate the construction of electrochemical devices. (C) 2004 The Electrochemical Society.
引用
收藏
页码:E102 / E109
页数:8
相关论文
共 40 条
[1]  
BARD AJ, 1980, ELECTROCHEMICAL METH, P322
[2]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[3]   A NONLINEAR LEAST-SQUARES FIT PROCEDURE FOR ANALYSIS OF IMMITTANCE DATA OF ELECTROCHEMICAL SYSTEMS [J].
BOUKAMP, BA .
SOLID STATE IONICS, 1986, 20 (01) :31-44
[4]   Adsorption of gases in multimolecular layers [J].
Brunauer, S ;
Emmett, PH ;
Teller, E .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319
[5]   THE CHARACTERIZATION OF POROUS-ELECTRODES BY IMPEDANCE MEASUREMENTS [J].
CANDY, JP ;
FOUILLOUX, P ;
KEDDAM, M ;
TAKENOUTI, H .
ELECTROCHIMICA ACTA, 1981, 26 (08) :1029-1034
[6]   Comparison of electrosorption at activated polycrystalline and Pt(531) kinked platinum electrodes. Surface voltammetry and charge displacement on potentiostatic CO adsorption [J].
Clavilier, J ;
Orts, JM ;
Gomez, R ;
Feliu, JM ;
Aldaz, A .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 404 (02) :281-289
[7]  
CONWAY BE, 1995, ELECTROCHEMICAL SOC, V9529, P15
[8]   Electrochemical characterization of electrodes with submicrometer dimensions [J].
Conyers, JL ;
White, HS .
ANALYTICAL CHEMISTRY, 2000, 72 (18) :4441-4446
[9]  
de Levie R, 1967, Advances in Electrochemical Science and Engineering, P329
[10]   Influence of particle size distribution on insertion processes in composite electrodes. Potential step and EIS theory Part I. Linear diffusion [J].
Diard, JP ;
Le Gorrec, B ;
Montella, C .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 499 (01) :67-77