Elucidating Ligand Exchange Dynamics of Hexacyanochromate-Based Redox Mediators in Aqueous Iron-Chromium Redox Flow Batteries.

ABSTRACT: Aqueous redox flow batteries (AQRFBs) are revolutionizing energy storage by integrating sustainability with cutting-edge innovation. Among them, Iron-Chromium RFBs (Fe-Cr RFBs), which utilize aqueous-based electrolytes, effectively address critical challenges in renewable energy integration while offering unparalleled safety, low-cost scalability and environmental compatibility. Potassium hexacyanochromate (K₃[Cr(CN)₆]) has emerged as a promising negolyte material in Fe-Cr RFBs due to its favorable electrochemical properties. However, enhancing its long-term stability and elucidating its structural transformations remain crucial for optimized performance. Investigations into ligand exchange mechanism reveal connections to detrimental side reactions, notably hydrogen e

SUBMITTER: Jang JE 

PROVIDER: S-EPMC12435428 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature