Deep eutectic solvents (DESs) represent a green and non-expensive substitute for ionic liquids as non-aqueous electrolytes (NAEs). Electrochemical applications in NAEs benefit from the extended potential windows, due to the absence or minimization of water. However, interactions between electrode and electrolyte, as well as their degradation, embody a relevant but unexplored territory for the implementation in electrochemical systems. Electrochemical characterization of six electrode–electrolyte couples (three electrodes in two different DESs) were conducted by means of cyclic voltammetry and chronoamperometry. Besides conventional electrochemical characterization, ICP-OES, TOC, SEM and EDX measurements were used to track the transformations in the system. This work represents a first attempt to develop a methodology for the characterization of electrode corrosion in DESs.

深度共晶溶剂（DES）代表了作为非水电解质（NAE）的离子液体的绿色且廉价的替代品。由于缺水或水最少，NAE中的电化学应用受益于扩展的电位窗口。然而，电极和电解质之间的相互作用以及它们的降解体现了在电化学系统中实施的相关但尚未探索的领域。通过循环伏安法和计时电流法对六个电极-电解质对（三个不同DES中的三个电极）进行了电化学表征。除了常规的电化学表征，还使用ICP-OES，TOC，SEM和EDX测量来跟踪系统中的转变。