ABSTRACT
This chapter discusses the membrane materials for vanadium redox flow battery (RFB), a large-scale energy storage technique toward the grid. The membrane is one of the key components in RFBs, which closely impacts the cost, lifetime, and performance of the batteries. To enhance the performance, numerous efforts have been made to develop novel candidates for membranes or modify the membranes by various techniques. Herein, the working principle and development of RFBs are introduced first. The important concerns of the membranes for the batteries are presented. Four kinds of membranes are discussed in detail in terms of their preparation method and mechanism. Finally, the challenges and prospects are highlighted for the future development of the membranes toward energy storage applications.
