Hydrothermal Carbonization of Walnut Shell Biomass to Biochar for Supercapacitor Application

Hydrothermal carbonization is now emerging to address society's global sustainability problems by reprocessing several industrial and agricultural wastes derive promising carbonaceous materials such as graphene, biochar, activated carbon. This approach will further resolve the difficulties related safe recycling of waste also consumption fossil fuels. work focuses on synthesizing biochar via hydrothermal at temperatures 220 ℃ residence time (6, 12, 18, 24 h) their effects product yield other parameters studied. Characterizations produced different times were carried out using techniques like X-ray diffraction, UV-Visible Spectroscopy, N2 adsorption/desorption isotherm. The reduced from 56.4-40.2 wt-% with a rise in dwelling time. BET surface area was found increase we increased reaction On base maximum area, electrochemical analysis performed check role supercapacitor electrode.