Research on high-performance composite membrane in non-aqueous redox flow battery

Redox flow batter (RFB) has been regarded as a highly efficient technology for storing the intermittent renewable wind and solar powers, because its energy and power capacities are decoupled and can be optimized independently. Non-aqueous RFBs (NARFBs) have much wider potential window than the aqueous ones enabling high energy density. Their performance is in fast upgrading. However, the energy efficiency (EE) and power density (PD) are limited by the membranes, which prevent the crossover of the positive and negative active species and facilitate the transfer of the supporting electrolyte ions. With the research on the selective ion transfer through the phases and across the interfaces both inside the membrane and at the solid-liquid contacting surface, this project will create high performance membrane for NARFBs to greatly enhance both EE and PD and will facilitate their commercially large-scale application, thus contribute to achieve the carbon neutral EU goal.