Microstructural engineering of high-power redox flow battery electrodes via non-solvent induced phase separation

Redox flow batteries (RFBs) are emerging as viable options for grid-scale energy storage, but their elevated costs hamper commercialization. Enhancing the porous carbon electrode performance to improve power density and reduce system is an effective strategy toward widespread deployment; however, must satisfy multiple contradictory roles, including providing high surface area, low pressure drop, facile mass transport, thus motivating engineering efforts. In this work, we systematically explore non-solvent induced phase separation (NIPS) technique a platform synthesize family of distinct microstructures use in RFBs. Flow cell studies commercially relevant redox pairs (i.e., Fe 2+/3+ , V 4+/5+ ) performed, revealing diverse profiles, synthesis-structure-performance relationships, opportunities high-power materials. We anticipate that, with further refinement customization, NIPS electrodes can broadly benefit efforts electrochemical storage conversion applications. • Non-solvent versatile synthetic Porous tunable microstructure Synthesis-property-performance relationships battery High Jacquemond et al. develop approach, based on separation, manufacture batteries. Through systematic study conditions, authors elucidate manufacturing-microstructure-performance demonstrate operation using novel electrodes.