Neutral red (NR) was utilized as an electron mediator in microbial fuel cells consuming glucose to study both its efficiency during electricity generation and its role in altering anaerobic growth and metabolism of Escherichia coli and Actinobacillus succinogenes. A study of chemical fuel cells in which NADH, NR, and ferricyanide were the electron donor, the electronophore, and the electron acc...

Enzymatic fuel cells produce electrical power by oxidation of renewable energy sources. An enzymatic glucose biofuel cell uses glucose as fuel and enzymes as biocatalyst, to convert biochemical energy into electrical energy. The applications which need low electrical voltages and low currents have much of the interest in developing enzymatic fuel cells. An analytical modelling of an enzymatic f...

Hybridization of fuel cells with additional batteries or ultracapacitors in a fuel cell vehicle reduces electrical and mechanical stresses on fuel cells and improves the overall drive train efficiency over a standard drive cycle. This paper primarily analyzes hybrid fuel cell vehicles with different drive train arrangements, and compares projected fuel economies of hybrid fuel cell vehicles wit...

Micro-fabricated fuel cell systems are a potential consumer product with the promise to outperform batteries for man-portable power generation in terms of the achievable energy density. A great variety of potential devices are being considered in various research institutions and thus there is a need for a systematic product design methodology, including comparison of alternatives and examinati...

Owing to their high efficiency and energy density, miniaturized fuel cells are an attractive alternative to batteries in the mW-W power generation market for portable consumer and military electronic devices [cf. 1-3]. Hydrogen is being actively considered as a fuel for power generation. It can be supplied either by storage devices or its in-situ generation using reformers. However, safety and ...

In present work, numerical analysis of three novel PEM fuel cells with tubular geometry was conducted. Tree different cross section was considered for PEM, namely: circular, square and triangular. Similar boundary and operational conditions is applied for all the geometries. At first, the obtained polarization curve for basic architecture fuel cells was validated with experimental data and then...

Fuel cell electric vehicles are mostly relying on operation of their fuel cell and battery system. Single power source systems use battery units as backup; however, in heavy loads or instances with low State Of Charge (SOC) levels, there is a need for other mechanisms to provide reliable energy for the system. This paper investigates the natural enhanced reliability of operation in an advanced ...