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A Hybrid Biofuel Cell Based on Electrooxidation of Glucose Using Ultra-Small Silicon Nanoparticles
Biosensors & Bioelectronics
  • Yongki Choi, City University of New York
  • Gang Wang, Cleveland State University
  • Munir H. Nayfeh, University of Illinois at Urbana-Champaign
  • Siu-Tung Yau, Cleveland State University
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The ultra-small silicon nanoparticle was shown to be an electrocatalyst for the electrooxidation of glucose. The oxidation appeared to be a first order reaction which involves the transfer of 1 electron. The oxidation potential showed a low onset of −0.4V vs. Ag/AgCl (−0.62V vs. RHE). The particle was used as the anode catalyst of a prototype hybrid biofuel cell, which operated on glucose and hydrogen peroxide. The output power of the hybrid cell showed a dependence on the enzymes used as the cathode catalyst. The power density was optimized to 3.7μW/cm2 when horseradish peroxidase was replaced by microperoxidase-11 (MP-11). Comparing the output power of the hybrid cell to that of a biofuel cell indicates enhanced cell performance due to the fast reaction kinetics of the particle. The long-term stability of the hybrid cell was characterized by monitoring the cell voltage for 5 days. It appeared to that the robustness of the silicon particle resulted in more cell stability compared to the long-term performance of a biofuel cell.

Citation Information
Choi, Y., Wang, G., Nayfeh, M. H., , & Yau, S. (2009). A hybrid biofuel cell based on electrooxidation of glucose using ultra-small silicon nanoparticles. Biosensors and Bioelectronics, 24(10), 3103-3107. doi:10.1016/j.bios.2009.03.032