Which suitable electrode is used in alkaline fuel cell?

Which suitable electrode is used in alkaline fuel cell?

AFC Electrodes The electrodes usually have several layers with different porosities for the liquid electrolyte, fuel, and oxidant. AFCs can use both precious and nonprecious metal catalysts.

How does an alkaline hydrogen fuel cell work?

A fuel cell is composed of an anode, cathode, and an electrolyte membrane. A typical fuel cell works by passing hydrogen through the anode of a fuel cell and oxygen through the cathode. At the anode site, a catalyst splits the hydrogen molecules into electrons and protons.

What are the different types of fuel cells?

Comparison of Fuel Cell Technologies

What is an alkaline fuel cell made of?

Alkaline fuel cells contain a liquid electrolyte in most cases; therefore, in principle, the cell has three chambers that are divided by electrodes or separators. There are two chambers for the reactants and one for the electrolyte. An AFC can be operated at up to 230 °C depending on the fuel cell model used.

What are the advantages and disadvantages of alkaline fuel cells?

Fuel Cell FAQs / Alkaline Fuel Cell (AFC) AFCs’ high performance is due to the rate at which chemical reactions take place in the cell. They have also demonstrated efficiencies near 60% in space applications. The disadvantage of this fuel cell type is that it is easily poisoned by carbon dioxide (CO2).

Why is potassium hydroxide used in alkaline fuel cells?

Collecting the History of Alkali Fuel Cells. Alkali fuel cells operate on compressed hydrogen and oxygen and generally use a solution of potassium hydroxide in water as their electrolyte. Operating temperatures inside alkali cells are around 150 to 200 degrees C (about 300 to 400 degrees F).

Why are alkaline fuel cells used in space?

Alkaline fuel cells (AFCs) are one of the most developed technologies and have been used since the mid-1960s by NASA in the Apollo and space shuttle programs. The fuel cells on board these spacecraft provide electrical power for onboard systems, as well as drinking water.

What is a disadvantage of an alkaline fuel cell?

Fuel Cell FAQs / Alkaline Fuel Cell (AFC) The disadvantage of this fuel cell type is that it is easily poisoned by carbon dioxide (CO2). In fact, even the small amount of CO2 in the air can affect this cell’s operation, making it necessary to purify both the hydrogen and oxygen used in the cell.

What is the chemical name of fuel?

Petrol has a basic chemical formula since it is a mixture of various chemicals and is also blended as per its need. So, it’s general chemical formula is CnH2n+2. Diesel is also derived from a source called petroleum. It is also used as a fuel for diesel based engines.

Which fuel is used in bus?

Transit Buses by Fuel Type

What are the main components of an alkaline fuel cell?

Each fuel cell consists of three components: an anode electrode, a cathode electrode, and an electrolyte or membrane.