Energy storage technologies based on solid-liquid redox-targeting reactions:materials,devices,and kinetics
With the advancement of the carbon neutrality and the rapid development of renewable energy,energy storage technology has become a crucial pillar for addressing energy transition and sustainable development.Redox flow battery(RFB)is an electrochemical device used for large-scale energy storage.It has the characteristics of flexible design,large storage capacity,long cycle life,and high safety.However,limited by the solubility of redox mediator molecules,its energy density is relatively low,and there are few practical systems.To meet this challenge,energy storage technologies based on solid-liquid redox-targeting reactions,i.e.redox-targeting flow batteries(RTFBs)have emerged to enhance energy density,maintain excellent flowability and elevate the constraint of traditional RFBs.This review provides a comprehensive perspective of recent research progress in materials,devices,and kinetics related to RTFBs including characteristics of various materials,the design and performance of devices,as well as the characterization and modeling of kinetic processes.The bottleneck of current research is summarized and the insights into future development trends are also provided.