Biological fuel cells 1 Buffer Electrolyte 1 Buffer electrolytes 1 Controlled environment 1 Discharge performance 1 Electric current collectors 1 Electric discharges 1 Electrochemical performance 1 Electrochemical systems 1 Electrodes 1 Electrolyte formulation 1 Electrolytes 1 Glucose Oxidase-Laccase Biofuel Cell 1 Glucose oxidase 1 Glucose sensors 1 PH 1 Volumetric capacity Volumetric power density 1 pH 1