Materials Degradation in Electrochemical Energy Storage and Conversion Devices—An Overview

Electrochemical energy storage and conversion (EESC) devices typically suffer from various corrosion and degradation issues, including bipolar plate corrosion and carbon corrosion of polymer electrolyte membrane (PEM) fuel cells, corrosion of current collectors in metal-ion batteries and supercapacitors, and anode corrosion in metal-air batteries. Various associated degradation issues of active materials, electrolytes or membranes, solid electrolyte interphase (SEI) and cathode electrolyte interphase (CEI) formation, and galvanic corrosion are also accompanied. Several mitigation strategies were explored to tackle these degradation types. This chapter overviews research progress in this area.