Realizing one-step two-electron transfer of naphthalene diimides <i>via</i> a regional charge buffering strategy for aqueous organic redox flow batteries
Zengrong Wang, Xu Liu, Xuri Zhang, Heng Zhang, Yujie Zhao, Yawen Li, Haiyan Yu, Gang He
Abstract
a single-step redox process ("one-step two-electron" transfer process). The symmetrical battery testing of NDI-DEtOH revealed exceptional intrinsic stability lasting for 11 days with a daily decay rate of only 0.11%. Meanwhile, AORFBs with NDI-DMe/FcNCl and NDI-DEtOH/FcNCl exhibited a remarkable 40% improvement in peak power density at 50% state of charge (SOC) in comparison to NDI/FcNCl-based AORFBs. In addition, the battery's energy efficiency has increased by 24%, resulting in much more stable output power and significantly improved energy efficiency. These results are of great significance to practical applications of AORFBs.
Topics & Concepts
RedoxNaphthaleneElectron transferChemistryMaterials scienceAqueous solutionPhotochemistryElectronBattery (electricity)Chemical physicsNanotechnologyOrganic chemistryPower (physics)ThermodynamicsPhysicsQuantum mechanicsAdvanced battery technologies researchPerovskite Materials and ApplicationsElectrocatalysts for Energy Conversion