This work prepared an A-D-A para-modified thienoviologen electrolyte. The thiophene group effectively hinders the direct connection between pyridines, promoting electron cloud delocalization, and stabilizing the molecular structure. The conjugation induces a negative shift in the redox potential (-0.55 V), further compressing the potential difference to 0.13 V. In-situ UV/Vis technology elucidates the inherent relationship between absorption intensity and battery capacity fading. The [(NPr)2TV]Cl4/FcNCl-based AORFB enhances the two-electron storage capability with 86.10% capacity utilization and 87.90% capacity retention of over 300 cycles.

原文链接：https://pubs.rsc.org/en/content/articlelanding/2022/ta/d1ta10112a