Batteries Three Main Components of Batteries Common Dry Cell

Keys to assembly of an
electrolytic cell battery
How Batteries Work
Three Main Components
of Batteries
• Negative terminal (anode): an electrode made of a metal
such as zinc that accumulates negative charge ( gains
• Positive terminal (cathode): an electrode made of metal
such as copper that accumulates positive charge (loses
• Electrolyte: a liquid solution or paste whose molecules
spontaneously seperate into positively or negatively
charged atoms or groups of atoms, called ions.
• Two metal strips (electrodes) put
into a container
• Container filled with an electrolyte
(liquid solution that separates
positive and negative ions)
• The electrodes (metal strips) can not
touch each other.
How does the battery
• Oxidation-reduction reaction takes place
• One electrode accumulates electrons
(negative) and the other electrode loses
electrons (positive)
• The process of separating and
accumulating electrons produces the
electricity of the battery
Common Dry Cell Battery
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