Production of pyrolysis active carbon based on tuna head bone waste for supercapacitor applications.

Tuna fish waste so far has only been used as fish and livestock feed ingredients or disposed of directly into the environment (buried and thrown into the river) so that it will have a bad impact on the environment. On the other hand, the human need for electricity storage media is increasing. Supercapacitors are one of the energy storage media that have great opportunities. The aims of this study were to produce supercapacitors from tuna head bones and investigate their properties. In general, this research is divided into several stages, namely the raw material preparation stage, the pyrolysis stage, the nitrogen doping stage, the activation stage, the supercapacitor cell manufacturing stage, as well as the electrochemical characteristics stage, and the physical characteristics stage. From the results of the study, it was found that a supercapacitor with a thin layer of a working electrode made from tuna head bone with the highest capacitance value was obtained through the pyrolysis experiment of tuna fish head bone measuring 200 mesh, at a temperature of 400°C and with nitrogen doping (NH4OH) 3mL, which was 417.2631 F/g. While the energy density and power density produced are 11.8035 Wh.kg−1 and 112.8255 W.kg−1. [ABSTRACT FROM AUTHOR]