The innovative utilization of shrimp shell waste continues to diversify, with recent research showcasing a breakthrough in biochar synthesis. A recent study unveils the preparation and utilization of nitrogen-doped biochar derived from shrimp shell (NDBSS) in enhancing the performance of a glucose biofuel cell.

Methodology

Researchers prepared and characterized NDBSS, revealing its irregular lamellar structure with depressions and holes on the surface. Elemental analysis demonstrated high percentages of carbon (87.07%) and nitrogen (5.45%). The study further employed cyclic voltammetry (CV) and impedance measurements to evaluate the effectiveness of NDBSS-modified carbon paste electrode (NDBSS/CPE) in facilitating electron transfer.

Integration of NDBSS into the electrode construction exhibited promising results. The NDBSS/CPE showcased improved electron pathways and accelerated electron transfer, laying a robust foundation for its application in biofuel cell technology.

Application in Biofuel Cells

The NDBSS-modified electrode was employed in fabricating a glucose biofuel cell, incorporating bilirubin oxidase (BOD) biocathode and glucose oxidase (GOD) bioanode. CV experiments highlighted heightened current responses to oxygen and glucose, indicating enhanced performance due to NDBSS modification. Linear sweep voltammetry experiments further underscored a remarkable 9.829 times increase in maximum power density compared to unmodified cells, positioning NDBSS as a frontrunner in biofuel cell enhancement.

The utilization of shrimp shell waste in synthesizing nitrogen-doped biochar (NDBSS) marks a significant stride in sustainable material innovation. The study underscores NDBSS’s pivotal role in augmenting electrode performance, paving the way for its widespread application in electrochemical sensing and enzymatic biofuel cells.