A sustainable one-step strategy for highly graphitized capacitive carbons with hierarchical micro–meso–macro porosity
Huili Liu, Suisui Su, Heng Wang, Miaomiao Wang, Shouren Zhang, Binbin Chang, Baocheng Yang
Abstract
), including high specific capacitance, prominent rate capability, satisfactory energy density and good cycle stability. Meanwhile, we compared the contributions of porosity and the graphitized structure to capacitive performance, and porosity was dominant in determining capacitance and the graphitized skeleton had a positive effect in enhancing the capacitive performance. In addition, we established the relationship between the structure of GPC and electrochemical capacitive performance in different aqueous electrolytes, providing a valuable reference for GPC-based supercapacitors in different practical applications. More importantly, this strategy holds great promise to sustainably convert biowaste to high-added-value capacitive carbons for advanced energy storage applications in the future.