The Chemistry behind Quinone Flow Batteries
We will report the synthesis, chemical, and electrochemical properties of several substituted quinone molecules. These results indicate that bulk solutions of quinones may be easily prepared and used as electrolyte solutions without purification. The reaction can be modified to affect the reduction potential of the solution, while maintaining rapid and reversible electrochemical kinetics. Finally, the unique electronic structure of quinone molecules is described to explain the origin of the fast, un-catalyzed two-electron redox kinetics.