What is the difference between fuel cell and storage battery?

Fuel cell fuel cell is a chemical device that converts the chemical energy possessed by the fuel directly into electrical energy, also known as electrochemical generator. Fuel and oxygen are used as raw materials.

The battery is an electrochemical device that stores chemical energy and releases electrical energy when necessary. It uses the lead base plate grid filled with spongy lead (also called lattice body) as the negative electrode, the lead base plate grid filled with lead dioxide as the positive electrode, and the dilute sulfuric acid with the density of 1.26 - 1.33g/mlg/ml as the electrolyte.

2, the working principle is different:

Fuel cell is according to the electrochemical principle, that is, the principle of the primary battery, isothermal to the chemical energy stored in the fuel and oxidizer is directly converted into electrical energy, and thus the actual process is a redox reaction.

When charging a battery, the battery utilizes the external electrical energy to regenerate the internal active material, storing the electrical energy as chemical energy, and then converting the chemical energy into electrical energy again when discharging.