Recently researchers have focused to enhance the electrocatalytic activity of the biosystems, increasing the energy generation and electronic conductivity into the biofilms. Enzymes immobilized onto the surface of electrodes in biological fuel cells has been extensively reported. A biofuel cell provides a means to obtain clean, renewable energy and have great potential to be used as alternative energy source for low power devices. Some important development to obtain the maximum energy from the fuels are the focus of this presentation. To enhance the power density of enzymatic biofuel cell (EBFC) it is necessary to deep oxidize the fuels, that is to say that all the electrons from the fuel must be removed. There are two main routes to obtain this (i) immobilization of a group of target enzymes to perform a cascade in order to maximize the fuel oxidation; (ii) development of hybrid biofilms employing a mixture of organic catalyst or noble metals nanoparticles with an enzyme able to break C-C bonds. We will present recent configuration to complete oxidize ethanol (ET) and ethylene glycol (EG) into CO2.
Adalgisa Rodrigues de Andrade has a degree in Chemistry and PhD in Physical Chemistry from University of São Paulo. She is a Full Professor at the University of São Paulo in the Department of Chemistry FFCLRP-USP Dr. de Andrade researches in different areas of electrochemistry, mainly in Environmental Electrochemistry, preparing electrode materials to carry out the degradation of various toxic compounds. Her recent research is in the field of energy production with fuel cells and biofuel cells. She is the author of more than 100 publications and two patents, nine book chapters and has given several lectures. She has supervised and advises many undergraduate, masters and Ph.D. students, and supervise post-doctoral students.