Which type of electrolyte is required for phosphoric acid type fuel cell operation?

Phosphoric acid fuel cells (PAFC) are a type of fuel cell that uses liquid phosphoric acid as an electrolyte. They were the first fuel cells to be commercialized. Developed in the mid-1960s and field-tested since the 1970s, they have improved significantly in stability, performance, and cost.

What is acid electrolyte?

Substances that give ions when dissolved in water are called electrolytes. They can be divided into acids, bases, and salts, because they all give ions when dissolved in water. These solutions conduct electricity due to the mobility of the positive and negative ions, which are called cations and anions respectively.Aug 15, 2020

How does phosphoric acid fuel cell work?

As the name suggests, PAFCs use phosphoric acid as the electrolyte. Positively charged hydrogen ions migrate through the electrolyte from the anode to the cathode. Electrons generated at the anode travel through an external circuit, providing electric power along the way, and return to the cathode.

How do acid fuel cells work?

These cells commonly work in temperatures of 150 to 200 degrees Celsius. This high temperature will cause heat and energy loss if the heat is not removed and used properly. This heat can be used to produce steam for air conditioning systems or any other thermal energy consuming system.

Is phosphoric acid a strong electrolyte?

HC2H3O2 (acetic acid), H2CO3 (carbonic acid), NH3 (ammonia), and H3PO4 (phosphoric acid) are all examples of weak electrolytes. Weak acids and weak bases are weak electrolytes. In contrast, strong acids, strong bases, and salts are strong electrolytes.Jul 19, 2019

Which suitable electrolyte is used in alkaline fuel cells?

Alkaline fuel cells

These fuel cells use a solution of potassium hydroxide in water as the electrolyte and can use a variety of non-precious metals as a catalyst at the anode and cathode. In recent years, novel AFCs that use a polymer membrane as the electrolyte have been developed.

Is C12H22O11 a strong electrolyte?

If these covalent compounds ionize completely, or nearly so, they produce many ions in solution and are strong electrolytes. ... Most covalent compounds do not produce ions (ionize) in water. An example is sucrose, C12H22O11. Without ions, solutions formed from these compounds do not readily conduct electricity.

How do alkaline fuel cells work?

Alkaline fuel cells consume hydrogen and pure oxygen, to produce potable water, heat, and electricity. They are among the most efficient fuel cells, having the potential to reach 70%. NASA has used alkaline fuel cells since the mid-1960s, in the Apollo-series missions and on the Space Shuttle.

How do methanol fuel cells work?

It has an anode and a cathode. They are separated by a membrane. By means of an electrochemical reaction, the direct methanol fuel cell converts the fuel, i.e. methanol, into electricity in combination with oxygen. ... A heat engine drives a generator and thus makes the electricity usable.

Which of the following is a disadvantage of phosphoric acid fuel cell?

At lower temperatures phosphoric acid is a poor ionic conductor, and CO poisoning of the platinum electro-catalyst in the anode becomes severe. However, they are much less sensitive to CO than PEMFCs and AFCs. Disadvantages include rather low power density and aggressive electrolyte.

image-Which type of electrolyte is required for phosphoric acid type fuel cell operation?
image-Which type of electrolyte is required for phosphoric acid type fuel cell operation?

What is electrolyte in fuel cell?

Alkali fuel cells operate on compressed hydrogen and oxygen. They generally use a solution of potassium hydroxide (chemically, KOH) in water as their electrolyte.


Why are batteries better than fuel cells?

The biggest difference between the two is that a battery stores energy, while a fuel cell generates energy by converting available fuel. A fuel cell can have a battery as a system component to store the electricity it's generating. ... Essentially, there is a small explosion as the fuel is combusted.


Which electrolyte is used in mercury cell and fuel cell?

In a mercury battery, sodium hydroxide or potassium hydroxide is used as an electrolyte. Sodium hydroxide cells have nearly constant voltage at low discharge currents, making them ideal for hearing aids, calculators, and electronic watches.

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