论文标题
h $ _2 $气泡运动在水电解过程中逆转
H$_2$ bubble motion reversals during water electrolysis
论文作者
论文摘要
使用电化学和光学方法研究了由水电解在酸性电解质中产生的氢气气泡的动力学。电势的定义的循环调制在微电极上应用，以控制方式产生相互作用的H $ _2 $气泡。识别并系统地研究了三种相互作用的情况。最突出的一个是在第一个独立气泡的运动中突然逆转，它返回电极，最后与第二个气泡结合。由Toepler的Schlieren技术证明，浮力和热毛皮效应之间的竞争提供了非接触式运动逆转的解释。
The dynamics of hydrogen bubbles produced by water electrolysis in an acidic electrolyte are studied using electrochemical and optical methods. A defined cyclic modulation of the electric potential is applied at a microelectrode to produce pairs of interacting H$_2$ bubbles in a controlled manner. Three scenarios of interactions are identified and systematically studied. The most prominent one consists in a sudden reversal in the motion of the first detached bubble, its return to the electrode and finally its coalescence with the second bubble. Attested by Toepler's schlieren technique, an explanation of contactless motion reversal is provided by the competition between buoyancy and thermocapillary effects.
