Performance evaluation of enzymatic biofuel cells using a new cathodic catalyst containing hemin and poly acrylic acid promoting the oxygen reduction reaction

Abstract

A new cathodic catalyst for EBCs is developed by adoption of a horseradish peroxidase cofactor mimetic supporter and enzyme–polymer conjugate.

Amine axial ligand-coordinated cobalt phthalocyanine-based catalyst for flow-type membraneless hydrogen peroxide fuel cell or enzymatic biofuel cell

“…S4. For the test, the reported [CNT/ PEI]/hemin and [CNT/PEI]/hemin/GOx catalysts were used as HPFC and EBC cathodes (0.45 V of cathodic onset potential), respectively [44].…”

High performance of the flow-type one-compartment hydrogen peroxide fuel cell using buckypaper and narrow fuel pathway under physiological conditions

“…It should be noted that these results are benefiting from the intrinsic features of BP and adopting PEI, implying that the HPFC performance using BP/PEI/hemin will be quite improved compared with the other electrode and previous studies. 18,20,41,49…”

“…H 2 O 2 fuel decomposes to two protons and O 2 (HPOR, H 2 O 2 → 2H + + O 2 + 2e − ) by CoPc in the anode, and then the protons participated in the reduction of H 2 O 2 (HPRR, H 2 O 2 + 2H + + 2e − → 2H 2 O). 41,50 In short, H 2 O 2 is exploited as a fuel for both the electrodes, meaning that the cell structure and electrolyte can be fabricated simply against the other type of fuel cells.…”

“…To attach hemin molecules to BP or BP/PEI (BP/hemin or BP/PEI/hemin), 5 mL of hemin solution (5 mg mL −1 in DMF) was poured into the prepared BP or BP/PEI, and immersed for 2 h. Subsequently, the hemin-attached BP or BP/PEI film was rinsed by DMF to remove excess hemin molecules, and then the prepared BP-based electrodes were dried at room temperature in a vacuum for over 6 h. 36,37 The preparation of the CNT/PEI/hemin catalyst was fabricated according to previous studies. 20,38–42…”

High temperature‐induced myoglobin‐mimic catalytic structure having high axial ligand content for one‐compartment hydrogen peroxide fuel cells

“…25,26,30,31 However, the alternative of PB cathode is rarely suggested; instead, hemin used nanostructures, which are based on the biomimetics of heme proteins, such as horseradish peroxidase (HRP), hemoglobin, and myoglobin, have been recently reported. [32][33][34] The main concept of using hemin originates from enzymatic fuel cells (EBC) or biosensors with HRP as a biocatalyst for the hydrogen peroxide reduction reaction (HPRR) to generate cathodic current. 26,30,[35][36][37] To date, many researchers have attempted coordinating the Fe core ion of hemin to an imidazole-functionalized material to imitate the original structure of heme proteins 32,36,[38][39][40][41] ; however, their fabrication should not be recommended for mass use in HPFC owing to their high price and complex synthesis procedure.…”