A simulation of two-dimensional Ostwald ripening on silver electrodes

被引：8

作者：

Luque, Noelia B. ^{[1
]}

Ibach, Harald ^{[2
]}

Poetting, Kay ^{[1
]}

Schmickler, Wolfgang ^{[1
]}

机构：

[1] Univ Ulm, Inst Theoret Chem, D-89069 Ulm, Germany

[2] Forschungszentrum Julich, IBN 4, D-52425 Julich, Germany

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 19期

关键词：

Ostwald ripening; Monte Carlo simulations; Island dynamics; Electrochemical annealing; MONTE-CARLO SIMULATIONS; ISLAND DYNAMICS; METAL-SURFACES; AU(100); DECAY; CU;

D O I：

10.1016/j.electacta.2010.04.066

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ostwald ripening of metal islands has been investigated by kinetic Monte Carlo simulation's using the results of quantum-chemical calculations and of the embedded atom method as input data. On Au(1 00) Ostwald ripening was found to be kinetically hindered at ambient temperatures. In contrast, small islands on Ag(1 00) decayed readily at uncharged and at positively charged surfaces. The rate of ripening increases both with temperature and with the surface charge. The latter effect is caused by the interaction of local dipole moments with the double-layer field. This work confirms and extends recent investigations of the effect of the field on the surface mobility of metal electrodes. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5411 / 5413

页数：3

共 17 条

[1] THEORETICAL FOUNDATIONS OF DYNAMIC MONTE-CARLO SIMULATIONS [J].