The membrane, the catalyst layers (anode and cathode) and the diffusion media together form the membrane-electrode assembly (MEA) of a PEM fuel cell.

Do you also know what the main components of a fuel cell are? ?

There are many types of fuel cells, but they all consist of an anode, a cathode, and an electrolyte that allows ions, often positively charged hydrogen ions (protons), to move between the two sides of the fuel cell.

How similarly does a PEM fuel cell work?

The proton exchange membrane fuel cell (PEMFC) uses a water-based, acidic polymer membrane as the electrolyte , with platinum-based electrodes. The protons pass through the membrane to the cathode side of the cell, while the electrons travel in an external circuit and generate the cell‘s electrical output.

People also ask what are the 3 segments of a fuel cell?

Fuel cells consist of three adjacent segments: the anode, the electrolyte, and the cathode.

What is the anode in a fuel cell?

The anode, the negative terminal of the fuel cell, has multiple tasks. It conducts the electrons released from the hydrogen molecules so that they can be used in an external circuit. It has engraved channels that distribute the hydrogen gas evenly over the surface of the catalyst.

Do hydrogen fuel cells cause pollution?

Fuel cells and pollution. Hydrogen -Oxygen fuel cells do not contribute directly to the greenhouse effect because they do not produce carbon dioxide during operation like other fuels. However, they still cause pollution.

How is electricity produced in a fuel cell?

A fuel cell combines hydrogen and oxygen to produce electricity, heat and water. Fuel cells are often compared to batteries. Both convert the energy produced by a chemical reaction into usable electrical energy.

What is a fuel cell in a car?

A fuel cell vehicle (FCV) or a fuel cell electric vehicle (FCEV) is a type of electric vehicle that uses a fuel cell instead of a battery or in combination with a battery or supercapacitor to power its onboard electric motor.

What is a fuel cell stack? ?

A single fuel cell consists of a membrane electrode assembly (MEA) and two flow field plates that deliver a voltage of about 0.5 and 1 V (too low for most applications). Just like batteries, individual cells are stacked to achieve higher voltage and power. This arrangement of cells is called a fuel cell stack, or simply a stack.

What does a fuel cell look like?

A fuel cell consists of an anode, a cathode, and an electrolyte membrane. Due to their high efficiency, fuel cells are very clean as their only by-products are electricity, excess heat and water. Since fuel cells also have no moving parts, they work almost silently. Fuel cells are also scalable.

Which substance is reduced in a fuel cell?


How do we get hydrogen?

Currently, the Most hydrogen is made from fossil fuels, particularly natural gas. Electricity – from the grid or from renewable sources such as wind, solar, geothermal or biomass – is also currently used to produce hydrogen. In the longer term, solar energy and biomass can be used more directly to produce hydrogen.

How much water does a fuel cell produce?

In a typical hydrogen fuel cell, each kilogram of fuel produces 9 kg of water. Thus, water production could be a by-product of on-site power generation. For example, the average electricity consumption of a US household is approximately 31 kWh per day [4].

How do fuel cell stacks work?

Each individual cell contains an anode, a cathode, and an electrolyte layer. When a hydrogen-rich fuel, such as clean natural gas or renewable biogas, enters the fuel cell stack, it electrochemically reacts with oxygen (i.e., ambient air) to produce electricity, heat, and water.

The fuel in a fuel cell can be a solid ?

PEM fuel cells use a solid polymer as the electrolyte and porous carbon electrodes containing a platinum or platinum alloy catalyst. They only need hydrogen, oxygen from the air and water to operate. They typically run on pure hydrogen from storage tanks or reformers.

What are the disadvantages of fuel cells?


  • Expensive to manufacture due to the high cost of Catalysts (Platinum)
  • Lack of infrastructure to support the distribution of hydrogen.
  • Much of the currently available fuel cell technology is in the prototype stage and has not yet been validated.
  • Hydrogen is expensive to produce and not available everywhere.

What is PEM technology?

What is PEM technology? PEM: PROTON EXCHANGE MEMBRANE. The proton exchange membrane diagram is the heart of a hydrogen infusion machine (HIM). The electrolytic cell is the Proton Exchange Membrane (PEM) with Solid Polymer Electrolyte (SPE), a very different type of membrane than that used in a standard alkaline ionizer.

What is the difference between a battery and a fuel cell?

The main difference between the two is that a battery stores energy while a fuel cell produces energy by converting available fuel. A fuel cell may have a battery as a system component to store the electricity it produces.

Who invented the fuel?

This was followed by pioneering work on what would later become fuel cells Scientist Christian Friedrich Schönbein in 1838. William Grove, a chemist, physicist and lawyer, is widely credited with inventing the fuel cell in 1839.

What is hydrogen made of?

“Hydrogen is made Made primarily from coal by crushing the fuel into powder and passing steam and oxygen through it. It is made from natural gas by heating it and reacting it with steam.

How efficient is a hydrogen fuel cell? ?

If the fuel cell is operated with pure hydrogen, it has a potential of up to 80 percent efficiency, which means it converts 80 percent of the energy content of the hydrogen into electrical energy. We have an efficiency of 80 percent of electricity generation and an efficiency of 80% in the conversion into mechanical energy.

Is a battery a fuel cell?

A b A battery is a closed unit that generates electricity while a Fuel cell is a galvanic cell that requires a constant external supply of one or more reactants to generate electricity.