Preparation of the Lentinus Edodes-Based Porous Biomass Carbon by Hydrothermal Method for Capacitive Desalination

摘要

Biomass carbon materials were prepared by hydrothermal method using Lentinus edodes, followed by activation by ZnCl_2 at high carbonization temperature. SEM and contact angle test show that ZnCl_2 has a significant effect on the surface morphology and properties of porous carbon materials. Using the porous carbon as electrodes of the capacitor, the specific capacitance of the porous carbon material was found to be 247.6 F/g. The desalination amount of porous carbon material in capacitor cell was 12.9 mg/g, being the 1.9 times of that of the commercial activated carbon.