earticle

영어

Biofuel cells are capable of directly transforming chemical energy to electrical energy via electrochemical reactions involving biochemical pathways. Biofuel cells can be used as power sources of implantable devices because they can operate under physiological conditions using
enzymes and glucose/oxygen as a catalyst and fuels, respectively. Improvement of electron transfer from the enzyme to the electrode has been a major issue for the practical application of the biofuel cells.In this study, carbon nanotube (CNT) was incooperated with ferrocene, which
is an electron mediator, to increase the rate of electron transfer from the enzyme to the electrode. The anode of glucose biofuel cell was fabricated using ferrocene as a redox mediator and glucose oxidase as a biocatalyst. The electrochemical properties of the CNT-based bioanode
were analyzed by cyclic voltammetry CV, and the surface morphology was analyzed by scanning electron microscope and atomic force microscope. A remarkable improvement of the electron transfer efficiency was achieved by the introduction of CNTs. The CNTs increased the anodic peak current up to about 15 times.