Enhancement of glucose oxidation reaction in enzyme biofuel cell utilizing anthracene dicarboxyl acid cross-linker

In this study, an anthracene cross-linker is introduced to enhance the catalytic activity of glucose oxidase (GOx) based catalysts and to increase the amount of enzyme loading. The crosslinked GOx is bonded with the CNT/PEI support using the electrostatic interaction (AC[CNT/PEI/GOx]). Electrochemical evaluations are done to evaluate the performance of this catalyst and the performance of CNT/PEI/GOx catalyst is also measured as a control. According to the measurements, it is confirmed that the amount of loaded GOx increases, while K _m value calculated by Lineweaver–Burk plot shows that AC[CNT/PEI/GOx] (K _m : 0.73 mM) is superior to CNT/PEI/GOx (K _m : 1.71 mM) without cross-linking reaction. Based on these effects, it is demonstrated that the maximum power density of the enzymatic biofuel cell using AC[CNT/PEI/GOx] increases from 21.2 µW/cm ² to 57.4 µW/cm ² .