Triphenylphosphine Oxide-Derived Anolyte for Application in Nonaqueous Redox Flow Battery.

ABSTRACT: Recent advances in redox flow batteries have made them a viable option for grid-scale energy storage, however they exhibit low energy density. One way to boost energy density is by increasing the cell potential using a nonaqueous system. Molecular engineering has proven to be an effective strategy to develop redox-active compounds with extreme potentials but these are usually challenged by resource sustainability of the newly developed redox materials. Here, we investigate the utility of phosphine oxides as anolytes with extremely negative potentials. Specifically, we found that cyclic triphenylphosphine oxide (CPO), has a highly negative potential (-2.4 V vs Fc/Fc⁺). Importantly, CPO is synthesized from triphenylphosphine oxide, a common industrial chemical waste with no commer

SUBMITTER: Mahoney ER 

PROVIDER: S-EPMC11744756 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature