Abstract
The main objective of this study was to examine the quantitative performance of the electrochemical redox reaction of glucose by glucosidase and oxygen with laccase in a phosphate buffer solution at pH 7.0. The characterization of electrode performance was performed by using electrochemical analysis such as cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The use of such electrochemical analysis (CV and EIS) enables a better understanding of the redox process, the charge transfer resistance, and, hence, the potential mass transfer among the electrode materials in phosphorus buffer solution. The experimental results show that the maximum power densities of the bioanode and the biocathode electrodes were 800 µA/cm2 and 600 µA/cm2, respectively. Both the bioanode and biocathode show high internal resistance. The occurrence of peak-separation shows an excellent mass-transfer mechanism and better chemical reactivity in the electrode.
Highlights
Since the invention of fossil fuels, from which energy is generated by the burning method, they have caused some severe impacts on the environment
electrochemical impedance spectroscopy (EIS) is a useful tool in electrochemistry that is used in the characterization of enzymatic biofuel cells
It analyzes the maximum power production, which is limited by the high resistance of the enzymatic biofuel cells
Summary
Since the invention of fossil fuels, from which energy is generated by the burning method, they have caused some severe impacts on the environment. From the fuel cell or electrochemical industry is a high demand for researching a clean and safe energy source that is environmentally attainable and efficient in terms of use and production output. The study of the chemical reaction and electrical conductivity is called electrochemistry It further includes the dynamics of chemical reactions, which are due to the electrical conductivity across a medium and, in turn, the generation of current or energy from the chemical reactions. EIS is a useful tool in electrochemistry that is used in the characterization of enzymatic biofuel cells. It analyzes the maximum power production, which is limited by the high resistance of the enzymatic biofuel cells. CV was Catalysts 2020, 10, 782; doi:10.3390/catal10070782 www.mdpi.com/journal/catalysts
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