限制电流
电解
电极
传质
析氧
电流(流体)
旋转(数学)
化学
电解水
氧气
化学物理
大规模运输
氧化还原
反应速率
电化学
热力学
无机化学
物理
物理化学
工程物理
催化作用
色谱法
生物化学
几何学
数学
有机化学
电解质
作者
Leonardo D. De Angelis,Susana I. Córdoba de Torresi,André H. B. Dourado
标识
DOI:10.1002/celc.202201032
摘要
Abstract The use of fossil fuels as energy source is unsustainable in the long term and net‐zero carbon processes need to be implemented to maintain environmental balance. One could make use of assisted water electrolysis to produce clean hydrogen and avoid high overpotentials observed for the oxygen evolution reaction by switching to the SO 2 oxidation reaction (SO 2 OR). This process exhibits a complex mechanism on Au electrodes, which is strongly affected by convection, exhibiting an anti‐Levich behavior, in which the limiting current linearly decreases with the square root of the rotation rate. Likewise, the bi‐stability region observed in the j / E profiles narrows in a sigmoidal profile with the rotation rate, leading to a non‐linear phenomenon with two controlling parameters, mass transport and potential applied. These events were understood to be related to the changing in the reaction mechanism by controlling the electrode rotation, much related to the decrease in the current aforementioned.
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