Electrochemical Study of electrodeposited Ni on modified glassy carbon electrode for glucose oxidation reaction

Glucose biofuel cells (GBFCs) could produce a clean and safe energy for a next generation portable devices [1]. It has a high energy content which is promise a low cost electrochemical power sources. The performance of GBFCs is determined mainly by the anodic reaction [3]. Due to this, anode electrocatalyst is a limiting part of GBFCs. Ni is a good catalyst for glucose oxidation reaction (GOR), even better than Pt [2]. In this work GOR was investigated on modified glassy carbon electrode with electrodeposited Ni. For electrodeposition process, the cyclic voltammetry as simple electrochemical method was applied in an acidic aqueous solution. The effect of cycle number in cyclic voltammetry electrodeposition process was studied on performance of prepared electrodes for GOR. The performance of prepared electrodes was studied by electrochemical method like as cyclic voltammetry (-1.2 – 0.8 V vs. Ag/AgCl saturated KCl, scan rate 20 mV/s) and linear sweep voltammetry (-1.2 – 0.2 V vs. Ag/AgCl saturated KCl, scan rate 1mV/s) in glucose 3 mM and phosphate buffer solution (PBS) 0.10 M. Beneficial from this catalyst GOR takes place with current density of 1.04×10-5 mA cm-2 at 0.0 V vs. Ag/AgCl saturated KCl at optimized condition.