Corrosion of Current Collectors in Metal-Ion Batteries

Effective control over the ageing of metal-ion rechargeable batteries is of fundamental importance for the realization of a fast global energy transition, where the improvement of key concepts like electromobility and stationary energy storage is particularly envisaged. Among the multiple factors that have impact on this complex phenomenon, the deeper understanding and prevention of current collector (CC) corrosion play leading roles. It turned out that CC corrosion is a major challenge for the development of both conventional and next-generation highly efficient electrochemical storage technologies. This chapter introduces the reader to the basics of the anodic behaviour and electrochemical corrosion of the CCs in rechargeable metal-ion batteries (MIBs). Details on corrosion mechanisms and most important factors controlling the stability of CCs are reviewed for Li-ion batteries. Additionally, overview of the CC performance in the next-generation aqueous and non-aqueous metal-ion rechargeable batteries is presented. The work can serve as a general guideline for academic scientists and industrial product engineers in their endeavours to fight against degradation of battery CCs.