High-temperature decomposition
High-temperature splitting of water occurs at about 3000 °C. At this temperature, 10% of the water is decomposed and the remaining 90% can be recycled. To reduce the temperature, other processes for high temperature splitting of water have been suggested:
▸Thermo-chemical cycles.
▸Hybrid systems coupling thermal decomposition and electrolytic
2) Fuels
(1) Solid fuels: Coal and Biomass
Coalis
one
of
most
important
fuel
in
Korea
for
electricity
production
and
other
industrial uses. It consists of the remains of vegetation deposits of past geologic ages,
after subjection of biochemical actions, high pressure, temperature, and submersion. The
characteristics
of
Fuel cells chemically combine the molecules of a fuel and oxidizer without pollution of traditional combustion.
In a fuel cell, the electricity is generated directly as an electrochemical device and therefore, there is no high-temperature step as normal burning. This direct conversion of chemical energy to electrical energy is more efficient and generates much less pollutions than do traditio
fuel through partial oxidation. The coal is fed into a high-temperature pressurized container along with steam and a limited amount of oxygen to produce a gas. The gas is known as synthesis gas or syngas and mainly consists of carbon monoxide and hydrogen. The gas is cooled and undesirable components, such as carbon dioxide and sulphur are removed. The gas can be used as a fuel or further process
fuel cell applications, including :
proton exchange membranes
conductive bipolar flow plates
cell plate coatings
Polymer behave like molecular sieves in the solid state
Internal surface area is wide
Pore size can be controlled up to nano-scale
Organic polymer is good one to be PIMs
Operate at very low temperature
High efficiency of a PEM ; 40 to 60 percent
Compact and light uni