MAGNETIC-FIELD EFFECTS ON MASS-TRANSPORT

被引:196
作者
AABOUBI, O [1 ]
CHOPART, JP [1 ]
DOUGLADE, J [1 ]
OLIVIER, A [1 ]
GABRIELLI, C [1 ]
TRIBOLLET, B [1 ]
机构
[1] UNIV PARIS 06,CNRS,PHYS LIQUIDES & ELECTROCHM LAB 15,F-75252 PARIS 05,FRANCE
关键词
D O I
10.1149/1.2086807
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
It has been shown that the stationary limiting diffusion current on a steady electrode is proportional to B1/3C4/2 where C is the electroactive species concentration and B the magnetic field intensity. A new impedance technique is developed which consists of the frequency response analysis of the limiting diffusion current to a sinusoidal magnetic field perturbation. In the low frequency range, all the impedance diagrams can be reduced, in Bode coordinates, by ωB−2/3C−2/3. This response is due to convective mass transport and is similar to the electrohydrodynamical impedance obtained through the modulation of the rotation speed of a rotating disk electrode. © 1990, The Electrochemical Society, Inc. All rights reserved.
引用
收藏
页码:1796 / 1804
页数:9
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