Bromate reduction from strongly acidic solutions under steady-state conditions in the presence of a very small amount of bromine has been studied voltammetrically at disk microelectrodes of various radii. In conformity with theoretical predictions the intensity of the average current density depends on the electrode size in a non-monotonous manner, passing through a maximum for a certain radius. This behavior is a direct consequence of the autocatalytic character of this process where the non-electroactive bromate anion is reduced owing to the catalytic cycle based on the bromine/bromide redox-mediator couple. The experimentally observed dependence of the maximal current density, j^max, on the inverse disc radius, 1/r₀, for electrodes of larger sizes approaches a straight line corresponding to the “strong current limit”, which exceeds the diffusion-limited current density for bromate ion.

在各种半径的圆盘微电极上，已通过伏安法研究了在存在少量溴的情况下在稳态条件下从强酸性溶液中还原溴酸盐的方法。与理论预测一致，平均电流密度的强度以非单调的方式取决于电极尺寸，并通过某个半径的最大值。这种行为是该过程自催化特性的直接结果，在该过程中，由于基于溴/溴化物氧化还原介体对的催化循环，非电活性溴酸根阴离子被还原。实验观察到的最大电流密度j ^max对反盘半径1 / r _0的依赖性对于较大尺寸的电极，接近一条与“强电流极限”相对应的直线，该直线超过了溴酸根离子的扩散极限电流密度。