Introducing an inert-salt into a solvent-reduced catholyte for improving the electrochemical performance

Abstract

A high-energy solvent-reduced catholyte containing an inert-salt is prepared by utilizing the common 2,2,6,6-tetra-methylpiperidine-1-oxyl. The novel catholyte can remain liquid at room temperature and achieve a high energy density of 196 W h L⁻¹ by adding a small amount of organic solvent and inert-salt TBAPF₆. This work provides a significant direction for improving the energy density and stability of RFBs.