A GENERAL-MODEL FOR PATTERN-FORMATION IN ELECTRODE-REACTIONS

被引:66
作者
FLATGEN, G [1 ]
KRISCHER, K [1 ]
机构
[1] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY
关键词
D O I
10.1063/1.470578
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
Experiments on pattern formation in electrochemical systems show qualitative differences in comparison with phenomena observed with other chemical systems. In this paper we derive a general model from the basic transport equations which takes into account the special aspects of electrochemical systems. Stepwise introduction of three approximations considerably simplifies the equations and demonstrates the dominant role the electric potential plays for pattern formation. The simplest form of the model contains migration as the only transport mechanism, and the importance of intrinsic global coupling for the dynamic behavior of electrochemical systems becomes apparent. This simple model already reproduces the experimentally observed front behavior we recently reported [G. Flatgen and K. Krischer, Phys. Rev. E 51, 3997 (1995)]. (C) 1995 American Institute of Physics.
引用
收藏
页码:5428 / 5436
页数:9
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