Advanced Redox Flow Battery Technology

This presentation describes the recent progress of the advanced redox flow battery research and development including both aqueous and non-aqueous systems. Recent development on the single cell components including high selective membrane, high energy density electrolyte, and new nonaqueous redox flow chemistries will be reported. Varied electrochemical, chemical and physical evaluations were carried out to assist the component screening and optimization. The mass transport mechanisms of the redox flow battery will be discussed, which allowed us to optimize the related cell operation parameters and continuously operate the system for more than three months without any capacity decay. Particularly, a series study to correlate the Nafion structure (Figure 1) with the flow battery performance (Figure 2) will be presented in details.   

Acknowledgements

The authors would like to acknowledge financial support from the U.S. Department of Energy’s (DOE’s) Office of Electricity Delivery and Energy Reliability (OE) (under Contract No. 57558). Pacific Northwest National Laboratory is a multi-program national laboratory operated by Battelle for DOE under Contract DE-AC05-76RL01830.