Polymer Electrolyte Fuel Cells have high-power density, rapid startup, and low-temperature operation (around 80 to 120 C), and so are ideal for use in applications such as energy transport and battery replacement. The electrolyte used is a proton conducting polymer. This is typically a perfluorinated polymer, though other hydrocarbon-based membranes are under development in an attempt to reduce cost or to enable operation at temperatures approaching 200 C. The catalytically active layer sits adjacent to the membrane, supported on a PTFE treated carbon paper, which acts as current collector and gas diffusion layer. For operation on pure hydrogen, platinum is the most active catalyst, but alloys of platinum and ruthenium are used when higher levels of carbon monoxide are present (CO is a poison in all low temperature fuel cells). (more…)
Fuel cells are typically classified according to type of electrolyte. While many varieties of fuel cells have been demonstrated ...
The fuel cell can trace its roots back to the 1800s when a Welsh-born, Oxford-educated barrister, Sir William Robert Grove, realize ...
Transport applications tend to demand rapid start-up and instant dynamic response from fuel cell systems, so a high-temperature ...
A fuel cell is an electrochemical device that combines hydrogen with oxygen to generate electricity, heat and water to produce. ...
Alkaline fuel cell, often known as the Bacon fuel cell following the British inventor’ name. It has become the most created fue ...
If water is put on the floor on a cleaning operation, it tends to dry rapidly after a short time. In this position, we say that the water evaporates. Basically what happened is this means that changes in water levels from liquid to gas or steam. Evaporation occurs when molecules escape the surface of a liquid when they have enough kinetic energy to go off from the body of liquid. (more…)
10 benefits of Solar Energy: No 1 Solar energy is renewable. We never have to worry about running out of sunlight or usi ...
Extensive insulation repairs are usually done by contractors having the specific skills and equipment appropriate to the type o ...
Natural gas is found mainly in underground reservoirs and in coal beds. Natural gas is a fossil fuel that consist primarily of ...
It is a reasonable and sensible action to tighten our belts and cut spending as living cost are climbing nowadays. We have to m ...
Public acceptance (PA) clusters are defined by a number of rather intangible commonalties dealing with social values and public ...
The most widespread and practical process for capture solar radiation as organic fuels is the growth of virgin biomass. Extremely large quantities of carbon are fixed each year in the form of terrestrial and aquatic biomass. (more…)
Another large source of renewable carbon supplies is waste biomass. It consists of a wide range of materials and includes munic ...
Another large source of renewable carbon supplies is waste biomass. It consists of a wide range of materials and includes munic ...
The future development of energy crops, to the level at which they would replace residues as the major bioenergy fuel source, will ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactio ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...
Coalbed methane is produced within a process of oil and petroleum system. A petroleum system usually consists of oil in a sedimentary basin with a hydrocarbon source rock and all related oil and gas sources. Conventional petroleum system comprises of a hydrocarbon-generating source rock slate, with the help of heating and constant burial, resulted gas an oil. Coalbed methane is not same with coal which is originating from coal reservoir. The coal is a hydrocarbon source rock that developed during burial heating into a substance similar in structure to activated carbon. This is an organic substance that is chemically covered or heat-treated to increase micro-pores with a matching increase in the surface to increase gas sorption capacity. Coal produce methane gas and it has the capacity keep gas in place. (more…)
Coal is an important energy source and energy consumption in United States as well as worldwide. It will remain so for many yea ...
Natural gas and oil are common source energy used to give electricity. How efficient is coal if we compare to these other source of ...
The most widespread and practical process for capture solar radiation as organic fuels is the growth of virgin biomass. Extreme ...
Power consumption from electricity is an essential element of the U.S. economy since the beginning of the century. Coal power plant ...
Agricultural and forestry residues provide the largest proportion of biomass used for the production of biomas bioenergy. Some esti ...