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以发生电化学振荡为导向,设计可能引起振荡的化学与物理环境,由实验反向验证振荡机理,从而揭示金属电化学振荡的本质,这就是逆向而行的思路.本文通过改变Fe/H_2SO_4溶液界面附近溶液的pH,Fe~(2+)浓度等因素,人为地促进或阻碍Fe(OH)_2膜或Fe_3O_4膜的生成与溶解,创造可能发生电化学振荡的外界环境,验证了有关Fe/H_2SO_4体系电化学振荡主要归因于铁电极表面Fe(OH)_2膜或Fe_3O_4膜的周期性生成与溶解的机理.这表明用逆向而行的思路研究金属的电化学振荡是可行的.
Electrochemical oscillation-oriented design of the chemical and physical environment may cause oscillations, the experimental verification of the oscillation mechanism of the reverse to reveal the nature of the metal electrochemical oscillation, which is the opposite idea.This paper by changing the Fe / H_2SO_4 solution The pH value and Fe ~ (2+) concentration of solution near the interface can artificially promote or hinder the formation and dissolution of Fe (OH) 2 film or Fe_3O_4 film, and create the possible external electrochemical oscillation environment. The electrochemical oscillation of H_2SO_4 system is mainly attributed to the mechanism of periodic formation and dissolution of Fe (OH) _2 film or Fe_3O_4 film on the surface of iron electrode, which shows that it is feasible to study the electrochemical oscillation of metals by using the inverse method.