Koutecky-Levich Analysis (RDE)1总览当在电极表面发生的半反应速率受到质量传递和缓慢动力学的组合的限制时,通常可以使用旋转圆盘电极来阐明用正确设计的 Levich方法来研究质量传递参数(如扩散系数D)和动力学参…
当这些采样电流绘制在Koutecky-Levich图上时,线性关系是显而易见的(见图2,右)。 对于在物质传输极限电流平台上采样的一组电流(见图2,红色圆圈),外推回垂直轴(即无限转速)产生零截距(见图2右,红色箭头)。这是一个相同的结果获得了一个快速的半反应(见图1,右),因为这些电流采样都在一个足够高的过电位,没有...
It is demonstrated that Koutecky-Levich analysis is applicable and yields the expected plots of I 1 versus ω 1 where I is the current and ω is the rotation speed but that the values of the electrochemical rate constants inferred are thereof k app o , not k o . Thus, for ψ > 1 ...
demonstratedthatKoutecky-Levichanalysisisapplicableandyieldstheexpe~ed plotsof/-versus 一whereIisthecurrentan d istherotationspeedbutthat thevaluesoftheelectrochemicalrateconstantsinferredarethereof足Un,notko. Thus,for >1apparentelectrocatalysismightbenaivelybutwronglyinferred whereasfor <1thededucedelectrochemical...
The performance ofoxygen reduction reaction(ORR) catalysts has been substantially improved over the past several decades. These catalysts are evaluated for electrochemical activity in arotating disk electrode(RDE) assembly using an oxygen saturatedliquid electrolyte. Koutecky-Levich (K-L) analysis provides...
Masa J, Batchelor-McAuley C, Schuhmann W, Compton RG (2014) Koutecky-Levich analysis applied to nanoparticle modified rotating disk electrodes: electrocatalysis or misinterpretation. Nano Res 7(1):71–78J. Masa, C. Batchelor-McAuley, W. Schuhmann, R.G. Compton, Koutecky-Levich analysis ...
Masa J, Batchelor-McAuley C, Schuhmann W, Compton RG (2014) Koutecky-Levich analysis applied to nanoparticle modified rotating disk electrodes: electrocatalysis or misinterpretation. Nano Res 7(1):71–78J. Masa, C. Batchelor-McAuley, W. Schuhmann, R.G. Compton, Koutecky-Levich analysis ...
Part 2:Analysis of the Chromoamperometric response to Potential Step Perturbation, Sensors 2002, 2, 314-330.Lyons, M.E.G., 2002. Mediated Electron Transfer at Redox Active Monolayers. Part 3: Bimolecular Outer-Sphere, First Order Koutecky-Levich and Adduct Formation Mechanisms. Sensors, 2: 473...
Koutecky–Levich limitations evaluated. Relative error of j k and k 0 calculated. Optimal potential window for j k and k 0 calculation. KL analysis when none of the kinetic terms can be disregarded.doi:10.1016/j.elecom.2011.11.017Francisco J. Vidal-Iglesias...