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首页> 外文会议>Electrochemical synthesis and engineering (General) - 222nd ECS meeting/PRiME 2012 >Experimental Investigation of Two-Phase Electrolysis Processes in the Alkaline Solution
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Experimental Investigation of Two-Phase Electrolysis Processes in the Alkaline Solution

机译：碱性溶液中两相电解过程的实验研究

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摘要

During two-phase electrolysis for the production of oxygen and hydrogen, it is generally observed production of bubbles at one or two electrodes which indicates a change in electrical and hydrodynamic properties of the electrolyser. In the presence of gravity, the production of bubbles at the electrodes induces a macro-convection in the electrolyser. This leads to a variable distribution of the bubbles void fraction and of the current density j at the electrodes. The absence of gravity eliminates the natural convection and by the same frictional forces. The electrolysis is performed using a potentiostat PGSTAT302N. The formation of gas bubbles at the anode is observed by two cameras. The aim of this study is to predict the evolution laws of the electrochemical cell voltage and of the bubble diameter during a two-phase electrolysis depending on the two presently explored inputs: current density j, gravity G and concentration C.
机译：在用于产生氧气和氢气的两相电解期间，通常观察到在一个或两个电极处产生气泡，这表明电解器的电和流体力学性质发生了变化。在重力作用下，电极上产生的气泡会在电解槽中引起宏观对流。这导致在电极处的气泡空隙率和电流密度j的可变分布。重力的缺失消除了自然对流，并消除了相同的摩擦力。电解使用恒电位仪PGSTAT302N进行。用两个照相机观察阳极处的气泡形成。这项研究的目的是根据目前探索的两个输入：电流密度j，重力G和浓度C来预测两相电解过程中电化学电池电压和气泡直径的演变规律。

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