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实验发现中性分子N，N-双水杨醛乙二胺合钴［Co（salen）］可以通过简单浸泡进入全氟磺酸（Nafion）膜，形成具有稳定电化学响应的Co（salen）-Nafion修饰电极．X射线光电子能谱表明，Co（salen）中心钴原子能与Nafion膜中磺酸根基团形成轴向配位，而使其由十2价变为十3价状态．电化学研究表明，Co（salen）在Nafion膜中的电荷转移是由电活性物迁移和电子跳跃共同控制的．同时发现Co（salen）-Nafion修饰电极能催化分子氧的二电子还原反应．
It has been found that Co (salen), a neutral molecule of N, N-bis-salicylaldehyde, can be easily infiltrated into Nafion membrane to form a stable electrochemical reaction of Co (salen) -Nafion electrode. The X-ray photoelectron spectroscopy shows that the cobalt atom in the center of Co (salen) can form an axial coordination with the sulfonate group in the Nafion membrane, which makes it change from 12-valent to 13-valent. Electrochemical studies show that the charge transfer of Co (salen) in Nafion membrane is controlled by the migration of the electroactive species and the electron hopping. Co (salen) -Nafion modified electrode was also found to catalyze the two-electron reduction of molecular oxygen.