Here we report the development of nonaqueous high energy density Li-organic redox flow battery (LORFB) based on a modified redox active organic molecule as the positive electrolyte and lithium metal as the negative electrode.Molecular modification of quinone-based and ferrocene-based organic materials have demonstrated significantly improved solubility in common organic solvent, enabling the organic molecules to function as energy bearing active materials in the positive electrolyte. The synthesis and the electrochemical study of the two organic materials and the performance of the noanaqeuous flow cell using the modified organic redox couple as positive electrolyte will be reported.  Figure 1. Cell voltage profile of a LORFB with 0.25 M modified Anthriquinone in 1.0 M LiPF6/PC solution as positive electrolyte and lithium foil as negative electrode.    Figure 2. CV of a modified Ferrocence-based organic couple.

Development of high energy density Li-organic redox flow battery

246th National Meeting (2013)

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