What is the overall reaction in a fuel cell?

Overall reaction: 2H2(g)+O2(g)→2H2O(l)

How does a molten carbonate fuel cell work?

In a molten carbonate fuel cell (MCFC), carbonate salts are the electrolyte. Heated to 650 degrees C (about 1,200 degrees F), the salts melt and conduct carbonate ions (CO3) from the cathode to the anode. At the anode, hydrogen reacts with the ions to produce water, carbon dioxide, and electrons.

What is the overall reaction in a hydrogen fuel cell?

A fuel cell converts chemical energy directly into electrical energy – there is no heat. The overall reaction is: 2H 2 + O 2 → 2H 2O with electrons being exchanged from the cathode to the anode. Other fuels, such as methanol, are also being tried.

What can be produced by a molten carbonate fuel cell?

Molten carbonate fuel cells (MCFCs) were developed for natural gas, biogas (produced as a result of anaerobic digestion or biomass gasification), and coal-based power plants for electrical utility, industrial, and military applications.

What type of reaction is responsible for the generation of energy from fuel cells?

When the electrons return from doing work, they react with oxygen in the air and the protons (which have moved through the membrane) at the cathode to form water. This union is an exothermic reaction, generating heat that can be used outside the fuel cell.

What are fuel cells describe the principle and overall reaction involved in the working of hydrogen oxygen fuel cell?

The cell consists of three compartments separated by a porous electrode. Hydrogen gas is introduced into one compartment and oxygen gas is fed into another compartment. These gases then diffuse slowly through the electrodes and react with an electrolyte that is in the central compartment.

What is the operating temperature of molten carbonate fuel cell?

Molten carbonate fuel cells (MCFCs) are high-temperature fuel cells, typically operating at temperatures over 600°C. Unlike many other types of fuel cells, MCFCs are capable of internal reforming, whereby they convert other fuels to hydrogen directly.

How does a regenerative fuel cell work?

Regenerative Fuel Cells combine an electrolyzer that converts solar energy into stored chemical energy (pressurized hydrogen (H2) and oxygen (O2) gas), with a fuel cell that can convert the chemical energy back to electric power and water.

What chemical reaction takes place in the hydrogen oxygen fuel cell?

A fuel cell is a device that generates electricity through an electrochemical reaction, not combustion. In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water.

What is a fuel cell explain with FIG h2 o2 fuel cell?

Solution : Fuel cells. These are voltaic cells in which the reactants are fed continuously to the electrodes. These are designed to convert the energy from the combustion of fuels such as `H_(2),CO,CH_(4)` etc., directly into electrical energy.

Which reaction is used to make a fuel cell?


Which process is involved in fuel cell?

What is a molten carbonate fuel cell?

Molten carbonate fuel cell is a type of cell that works at high temperatures making it important in the energy scenario for two main reasons. One is that this cell can be fueled by natural gas, and it is not necessary to have available hydrogen gas.

What is the operating pressure of a molten carbonate cell?

Molten carbonate FCs are a recently developed type of fuel cell that targets small and large energy distribution/generation systems since their power production is in the 0.3-3 MW range. The operating pressure is between 1-8 atm while the temperatures are between 600-700 °C.

What is a fuel cell made of?

Individual fuel cells are made of an electrolyte cathode and anode, which are connected electrically in a series in a “stack.” Electrically conductive interconnectors (or bipolar plates) are used to allocate oxidant and fuel to the singular cells, and they electrically associate them to each other.

What is a hybrid direct carbon fuel cell?

A hybrid direct carbon fuel cell (HDCFC) is a promising technology that directly converts solid carbon to electricity. The HDCFC combines molten carbonate fuel cell (MCFC) and solid oxide fuel cell (SOFC) by incorporating molten carbonate on the anode of SOFC.