A high-capacity, high-power organic electrode via supercritical CO 2 impregnation into activated carbon micropores.

Herein, we report the impregnation of chloranil into activated carbon micropores using scCO 2 . The sample prepared under 105 °C and 15 MPa showed a specific capacity of 81 mAh g electrode -1 , except for the electric double layer capacity at 1 A g electrode-Polytetrafluoroethylene (PTFE) -1 . Additionally, approximately 90% of the capacity was retained even at 4 A g electrode-PTFE -1 .