The development of polymer electrolyte membrane (PEM) fuel cells that can be operated over a wide temperature range without the need for humidification is highly desirable for vehicle applications to overcome the problems associated with CO poisoning and water management. Here we report a novel PEM based on 1H-1,2,4-triazole grafted polysiloxane doped with phosphoric acid and reinforced with po...

Abstract Green hydrogen produced from wind, solar or hydro power is a suitable electricity storage medium. Hydrogen typically employed as mid- to long-term energy storage, whereas batteries cover short-term storage. can be by any available electrolyser technology [alkaline electrolysis cell (AEC), polymer electrolyte membrane (PEM), anion exchange (AEM), solid oxide (SOEC)] if the fed renewable...

computational fluid dynamics analysis was employed to investigate the radial flow field patterns of proton exchange membrane fuel cells (pemfc) with different channel geometries at high operating current densities. 3d, non-isothermal was used with single straight channel geometry. our study showed that new generation of fuel cells with circle stack with the same active area and inlet area gave ...

Fuel cells have become one of the major areas of research in the academia and the industry. The goal of most fish farmers is to maximize production and profits while holding labor and management efforts to the minimum. Risk of fish kills, disease outbreaks, poor water quality in most pond culture operations, aeration offers the most immediate and practical solution to water quality problems enc...

A low cost bipolar plate materials with a high fuel cell performance is important for the establishment of Proton Exchange Membrane (PEM ) cells into competitive world market. In this research, effect different plates material such as Aluminum (Al), Copper (Cu), and Stainless Steel (SS) single stack proton exchange membrane (PEM) was investigated both numerically experimentally. Firstly, three ...

The connection between PEM fuel cells and common DC-DC converters is examined. The analysis is model-based and done for boost, buck and buck-boost converters. In a first step, the effect of the converter ripples upon the PEM fuel cell is shown. They introduce oscillations in the fuel cell. Their appearance is explained, discussed and possibilities for their suppression are given. After that, th...

The adoption of fuel cells (FCs) for industrial applications, transportations and home power generation is widely increased during recent years. Because FCs are still in the development stage, to evaluate and validate fuel cell technologies suitable test systems are needed. In a fuel cell both chemical and electric sections can be founded, so to control its behaviour the measurement of differen...

The mechanisms of fuel cell degradation are not well understood. Even though the numbers of installed units around the world continue to increase and dominate the pre-markets, the present lifetime requirements for fuel cells cannot be guarantee, creating the need for a more comprehensive knowledge of material’s ageing mechanism. In this work, failure modes and mechanism of the membrane-electrod...