A Molten Carbonate Fuel Cell (MCFC) is a type of fuel cell that generates electricity through a chemical reaction between hydrogen and carbon dioxide. It operates at high temperatures, typically around 600 to 700 degrees Celsius, using a molten carbonate salt as the electrolyte. This high temperature allows for efficient reactions and the use of various fuels, including natural gas and biogas. MCFCs are known for their ability to produce electricity with low emissions, making them an environmentally friendly energy source. They are often used in large-scale power generation and can also provide heat for industrial processes, contributing to overall energy efficiency.