2. Contents
• Introduction
• Working MCFC.
With the Help of Equation
• Advantages of Cell
• Disadvantages of Cell
Usage of (MCFC)
References
3. Introduction
• The molten carbonate fuel cell operates at
approximately 650 C (1200 F).low-cost metal cell
components.
• A benefit associated with this high temperature
is that noble metal catalysts are not required for
the cell electrochemical oxidation and reduction
processes.
• Molten carbonate fuel cells are being
developed for natural gas and coal-based power
plants for industrial, electrical utility, and military
applications.
5. Equation with Explanation (Further
Working):
The electrochemical reactions occurring in the cell are:
at the anode:
H2 + CO3= = H2O + CO2 + 2e-
at the cathode:
l/2O2 + CO2 + 2e- = CO3
with the overall cell reaction:
H2 + l/2O2 + CO2 (cathode) = H2O + CO2 (anode)
When the hydrogen reaches the anode, the catalyst encourage it to
split into positively charged protons and negatively charged
electrons.
• The negatively charged electrons are not allowed through the
membrane.
• When the electrons enter the cathode they are combined with
oxygen from the air and carbon dioxide recycled from the used fuel.
• These molecules from a carbonate ion (Co3--).
6. • The negatively charged carbonate ions then
move through the electrolyte to the anode
where they combined with the protons to
maintain the charge balance.
• This is only possible if the electrolyte is very
hot, above 600 degree Celsius.
• The carbon dioxide is separated and recycled
to the cathode side.
7. • • Some of the heat produced in the process is
exhausted with the water in the from of vapor.
A cooling system remove the rest of it.
• The obtain desired amount of electrical
power individual fuel cells are combined in to
fuel cell “stacks”.
• A typical stack may consist of hundreds of
fuel cells.
• Increasing the number of cells in a stack
increases the voltage.
8. Advantages
• Support spontaneous internal reforming of
light hydro-carbon fuels
• Generate high-grade waste heat
• Have high efficiency
• Do not need noble metal catalysts
9. Disadvantages
• Have a liquid electrolyte, which introduces
liquid handling problems.
• Require a considerable warm up period.
• Scientists are currently exploring corrosion-
resistant materials for components as well as
fuel cell designs that increase cell life without
decreasing performance.
