Characterization and experimental comparison of commercial PEMFC stacks for marine applications

PEM Fuel Cells are considered among the most promising technologies for hydrogen utilization in both stationary and automotive applications. The number of FC installations on board ships – alone or in hybrid configuration with batteries – is increasing significantly, although international regulations that drive their installation are still missing. In this scenario, the project TecBia aims to identify a dedicated test protocol and the best commercial PEMFC technology for marine applications, assessing the integration of a 140 kW PEMFC system on the Zero Emission Ultimate Ship (ZEUS) vessel. The system design and technology provider has been chosen after a technical comparison based on a dedicated experimental campaign. The experimental campaign had two goals: (i) analyse the performance of the different PEMFC systems to define the best characteristics for maritime applications; (ii) verify the compliance with naval requirements with reference to current and future standards. The present study shows the resulting test protocol for FC Systems (FCS) for maritime applications, defined starting from the existing international regulations on FCS installations and on naval environment requirements; the results of its application on the commercial system chosen for the installation on ZEUS are reported.

Atomic-level insight into reasonable design of metal-based catalysts for hydrogen oxidation in alkaline electrolytes

Anion exchange membrane fuel cell (AEMFC) is becoming highly attractive for hydrogen utilization owing to the advantages of employing economic catalysts in alkaline electrolytes. Nevertheless, the kinetics of anodic hydrogen...

Sulfur Doped FeOx Nanosheet Arrays Supported on Nickel Foam for Efficient Alkaline Seawater Splitting

Developing economical, efficient and stable bifunctional catalysts for hydrogen production from seawater is of great significance to hydrogen utilization. Herein, sulfur doped iron oxide nanosheet arrays supported on nickel foam...

OBTAINING OF CARBON-FREE IRON POWDERS BY REDUCTION METHOD IN CONVEYOR FURNACES WITH RECIRCULATION AND REGENERATION OF "GREEN" HYDROGEN

The use of absolutely pure hydrogen to obtain carbon-free iron is justified. Such hydrogen can be obtained only by water electrolysis. According to modern trends it can be called "green" hydrogen". Some aspects of pure iron powders obtaining by the method of hydrogen reduction in a conveyor furnace are described. Thermodynamic analysis of the process has shown the expediency of reduction gas re-circulation for the full utilization of its chemical potential. The concept of hydrogen utilization factor is introduced and considered. The concept of hydrogen utilization factor is introduced and considered. It is ascertained that the realization of hydrogen recirculation is possible only in a gas-tight aggregate. Powder locks for sealing the end faces of conveyor furnaces for reduction and annealing of metal powders are developed. The basics of energy-efficient scheme for a reduction of iron with hydrogen recіrculation and regeneration have been developed and realized on practice. This innovation allows to reduce gas consumption almost to the stoichiometric index. Bibl. 15, Fig. 4, Tab. 2.