How is a fuel cell designed?
They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte. A fuel, such as hydrogen, is fed to the anode, and air is fed to the cathode.
What is the basic requirement in designing a fuel cell stack for a car?
If designing a fuel cell with a polymer electrolyte, the membrane must not dry out or become flooded with water. The resistive losses should be kept to a minimum. The stack must be properly sealed to ensure no gas leakage. The stack must be sturdy and able to withstand the necessary environments.
How does a fuel cell vehicle work?
Fuel cell cars are powered by compressed hydrogen gas that feeds into an onboard fuel cell “stack” that doesn’t burn the gas, but instead transforms the fuel’s chemical energy into electrical energy. This electricity then powers the car’s electric motors.
Can I build a fuel cell?
The easiest and lowest cost method for creating your first fuel cell stack is screen-printing. The two electrode layers and the polymer electrolyte membrane (PEM) need to be fused together using temperature and pressure for proper flow of the electrons and protons in the fuel cell after the chemical reaction.
What materials are fuel cells made of?
The primary components of a fuel cell are an ion conducting electrolyte, a cathode, and an anode, as shown schematically in Fig. 1. In the simplest example, a fuel such as hydrogen is brought into the anode compartment and an oxidant, typically oxygen, into the cathode compartment.
Are fuel cells the future?
In the future, fuel cells could power our cars, with hydrogen replacing the petroleum fuel that is used in most vehicles today. Many vehicle manufacturers are actively researching and developing transportation fuel cell technologies. Stationary fuel cells are the largest, most powerful fuel cells.
What are the 3 segments that make up a fuel cell?
The fuel cell market can be divided into three major segments: portable, transportation and stationary. Each of these can be further segmented into a variety of broad and niche applications.
How do you size a fuel cell?
This is determined by looking at the voltage each cell will produce when operating at that current density (from the IV curve of the MEA) and then multiplying that by the number of cells. The total power of the fuel cell at that operating point is the current from (1) multiplied by the voltage from (2).
Who is making fuel cell cars?
Firms including Toyota and Hyundai have produced hydrogen fuel cell vehicles, while smaller manufacturers such as Riversimple are also working on hydrogen-powered cars.