Bioanode For Biofuel Cell Research Articles

Biocompatible mediated bioanode prepared by using poly(3,4-ethylene dioxythiophene) poly(styrene sulfonate) (PEDOT:PSS) and sulfonated graphene oxide integrated enzyme for biofuel cells applications

In this study, a bioanode for biofuel cells was produced using a composite of poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS) and sulfonated graphene oxide (SGO) wherein SGO shows synergistic impact by going about as charge adjusting dopant and a conductive filler. The conducting polymer PEDOT:PSS alongside SGO fill in as a way to encourage electron transfer and co-immobilize the enzyme in the meantime. Extensive surface area controlled by SGO prompts high catalyst stacking and empowers to enhance the current density of the fuel cells. Ferritin additionally upgrades the transportation of electrons by going about as a redox mediator that effectively transfers electrons from enzyme to the conducting support. Examination of electrochemical execution of modified bioanode in presence of glucose was completed by cyclic voltammetry (CV) and linear sweep voltammetry (LSV) at various scan rates (20–100 mV s−1) in 35 mM of glucose concentrations prepared in 0.3 M potassium ferrocyanide [K4Fe(CN)6] solution. The findings showed that current increases with increase in glucose concentration and anode displayed good electrocatalytic action with saturation current density of 27 ± 2 mA cm−2.

Nickel-phendione complex covalently attached onto carbon nanotube/cross linked glucose dehydrogenase as bioanode for glucose/oxygen compartment-less biofuel cell

Here, [Ni(phendion) (phen)]Cl2 complex, (phendion and phen are 1,10-phenanthroline-5,6-dione and 5-amino-1, 10-phenanthrolin) covalently attached onto carboxyl functionalized multi walls carbon nanotube modified glassy carbon electrode (GCE/MWCNTs-COOH) using solid phase interactions and combinatorial approaches.The attached [Ni(phendion) (phen)]Cl2 complex displays a surface controlled electrode process and it acts as an effective redox mediator for electrocatalytic oxidation of dihydronicotinamide adenine dinucleotide (NADH) at reduced overpotentials. With co-immobilization of glucose dehydrogenase enzyme (GDH) by crosslinking an effective biocatalyst for glucose oxidation designed. The onset potential and current density are −0.1 V versus Ag/AgCl electrode and 0.550 mA cm−2, which indicate the applicability of the proposed system as an efficient bioanode for biofuel cell (BFC) design. A GCE/MWCNTs modified with electrodeposited gold nanoparticles (AuNPs) as a platform for immobilization of bilirubin oxidase (BOD) and the prepared GCE/MWCNTs/AuNPs/BOD biocathode exhibits an onset potential of 0.56 V versus Ag/AgCl. The performance of the fabricated bioanode and biocathode in a membraneless enzyme based glucose/O2 biofuel cell is evaluated. The open circuit voltage of the cell and maximum current density are 520 mV and 0.233 mA cm−2, respectively, while maximum power density of 40 μWcm−2 achieves at voltage of 280 mV with stable output power after 24 h continues operation.

Construction and Performance of a New Bioanode for Biofuel Cells

Construction and Performance of a New Bioanode for Biofuel Cells

Flexible Carbon Cloth Electrode Modified by Hollow Core-Mesoporous Shell Carbon as a Novel Efficient Bio-Anode for Biofuel Cell

A new approach is described to produce an efficient electrode material for biofuel cells using flexible carbon cloth (FCC) and hollow core-mesoporous shell carbon (HCMSC) nanospheres as bio-anode materials. The bio-electrochemical activity of glucose oxidase (GOx) enzyme adsorbed on this bio-anode was evaluated, with the maximum anodic current density varying from 80 microA cm(-2) to 180 microA cm-2 for glucose concentrations up to 5.0 mmol L(-1) for the FCC modified electrode with HCMSCs. The open circuit cell voltage was E(0) = 380 mV, and the catalytic electro-oxidation current of glucose reached 0.1 mA cm(-2) at 0.0 V versus Ag/AgCl. This new system employing HCMSC-based FCC is promising toward novel bio-anodes for biofuel cells using glucose as a fuel.