Ni(OH)2 nanosheets on Ni foam was prepared by the direct precipitation method. The morphology and phase composition of the as-prepared Ni(OH)2 nanosheets/Ni electrode were characterized by scanning electron microscopy and X-ray diffraction, respectively. The electrode's electrochemical behavior was investigated by cyclic voltammetry and the constant potential amperometry technique. The best performance of the glucose sensor can be obtained at 0.51 V in 0.2 M sodium hydroxide solution. The as-prepared Ni(OH)2 nanosheets/Ni electrode shows high sensitivity with 1130 μAmM-1cm -2 at the glucose concentration range of 2 μM to 40 μM and 1097 μAmM -1 cm -2 at the range of 0.1 mM to 2.5 mM. The response time of this electrode is less than 2 seconds, and its detection limit is 1 μM.

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