- Redox electrolytes are gaining attention for supercapacitors (SCs) due to their ability to provide high capacitance and long cycle stability, but their energy density is limited by narrow electrochemical windows caused by side reactions.
- To enhance performance, the study introduces tetrachloridehydroquinone (TCHQ) as a redox mediator in organic electrolytes, allowing a broader electrochemical window up to 2.7 V through a specific dehydrogenation reaction catalyzed by N-doped activated carbon.
- The research highlights the effectiveness of using TCHQ and N-doped activated carbon to improve energy density in SCs, offering a new approach for designing redox mediators and