High-Power Abiotic Direct Glucose Fuel Cell Using a Gold–Platinum Bimetallic Anode Catalyst

Abstract

We developed a high-power abiotic direct glucose fuel cell system using a Au–Pt bimetallic anode catalyst. The high power generation (95.7 mW cm –2 ) was attained by optimizing operating conditions such as the composition of a bimetallic anode catalyst, loading amount of the metal catalyst on a carbon support, ionomer/carbon weight ratio when the catalyst was applied to the anode, glucose and KOH concentrations in the fuel solution, and operating temperature and flow rate of the fuel solution. It was found that poly( N -vinyl-2-pyrrolidone)-stabilized Au 80 Pt 20 nanoparticles (mean diameter 1.5 nm) on a carbon (Ketjen Black 600) support function as a highly active anode catalyst for the glucose electrooxidation. The ionomer/carbon weight ratio also greatly affects the cell properties, which was found to be optimal at 0.2. As for the glucose concentration, a maximum cell power was derived at 0.4–0.6 mol dm –3 . A high KOH concentration (4.0 mol dm –3 ) was preferable for deriving the maximum power. The cell power increased with the increasing flow rate of the glucose solution up to 50 cm 3 min –1 and leveled off thereafter. At the optimal condition, the maximum power density and corresponding cell voltage of 58.2 mW cm –2 (0.36 V) and 95.7 mW cm –2 (0.34 V) were recorded at 298 and 328 K, respectively.

Research Progress and Prospects of Nanozyme-Based Glucose Biofuel Cells

“…Within the biofuel cell system, laccase can be utilized for developing cathodes, and many metal-based catalysts, including Pt, Mn, Fe, Co, and Ni, are generally efficient for preparing the cathode [ 50 , 51 , 52 , 53 ]. When we choose laccase-like nanozymes on cathode, general criterion is to maximize open circuit voltage (OCV) by considering the employed nanozymes on the anode, that can yield the highest power output.…”

“…Binary [ 50 , 57 , 58 , 59 , 60 , 61 , 62 ] or ternary [ 58 , 62 ] noble metal alloys have also been employed for developing glucose-based NBFCs, based on their synergistically enhanced enzyme-like activity and ability to circumvent the poisonous intermediates generated during the catalytic oxidation at the anodic electrode [ 51 , 58 , 60 , 61 ]. Chu et al [ 61 ] developed a Pt/Au alloy-based glucose biofuel cell consisting of an anode of a GOx-like Pt/Au nanozyme and a cathode of graphene with a Nafion membrane.…”

Mucilage-capped silver nanoparticles for glucose electrochemical sensing and fuel cell applications

“…Glucose represents the most suitable fuel because of its availability, non-volatility, safety, and biocompatibility. 30 Glucose fuel cells are based on glucose oxidation for electricity generation. The glucose fuel cell could be microbial, enzymatic, or abiotic.…”

Simple Yeast-Direct Catalytic Fuel Cell Bio-Device: Analytical Results and Energetic Properties

“…Several types of glucose-based fuel cells have been reported in the literature, such as direct abiotic fuel cells which use gold-platinum as a catalyst [ 7 , 8 , 9 ]; these devices were also proposed as implantable abiotic glucose fuel cells [ 10 , 11 ]. Among fuel cells, those based on biological processes are particularly appealing for their inherent sustainability.…”