166.6 F/g for supercapacitors
Residual biochar from sorption-enhanced hydrogen-rich syngas production, usable directly as supercapacitor electrodes with excellent specific capacitance.
Hongyu, Liu · Tang, Yuting · Tang, Jiehong · Wenchang, Yue · Ma, Xiaoqian
Energy 2026
Symmetric supercapacitors delivered an energy density of 9.3 Wh/kg