Designing Cr complexes for a neutral Fe–Cr redox flow battery. Issue 21 (17th February 2020)

• Record Type: Journal Article
• Authors: Ruan, Wenqing; Mao, Jiatao; Yang, Shida; Shi, Chuan; Jia, Guochen; Chen, Qing
• Is Part Of: Chemical communications. Volume 56:Issue 21(2020)
• Page Start: 3171
• Page End: 3174
• Publication Date: 2020-02-17
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc09704j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Through the design of polydentate ligands, we revamp the iron–chromium flow battery with neutral electrolytes for stable cycling performance. Abstract : We lay out the design principles of Cr complexes to address issues of slow kinetics and parasitic reactions in the Fe–Cr redox flow battery (ICRFB). We identify theoretically and experimentally dipicolinic acid as a promising ligand, and synthesize its derivative to improve the solubility of the Cr complex to 0.7 M. We couple it with ferrocyanide for a neutral ICRFB delivering 120 stable cycles.