Engineering Chemistry: Unit V: b. Energy Storage Devices

Types of Battery

1. Primary Battery (or) Primary cells (or) Non-reversible Battery 2. Secondary Battery (or) Secondary cells (or) Reversible Battery 3. Flow battery (or) Fuel cells

TYPES OF BATTERY

1. Primary Battery (or) Primary cells (or) Non-reversible Battery

In these cells, the electrode and the electrode reactions cannot be reversed by passing an external electrical energy. The reactions occur only once and after use they become dead. Therefore, they are not chargeable.

Examples

Dry cell, mercury cell.

2. Secondary Battery (or) Secondary cells (or) Reversible Battery

In these cells, the electrode reactions can be reversed by passing an external electrical energy. Therefore, they can be recharged by passing electric current and used again and again. These are also called Storage cells (or) Accumulators.

Examples

Lead acid storage cell, Nickel-cadmium cell.

3. Flow battery (or) Fuel cells

In these cells, the reactants, products and electrolytes are continuously passing through the cell. Here chemical energy gets converted into electrical energy.

Example

Hydrogen-oxygen fuel cell.

 

Engineering Chemistry: Unit V: b. Energy Storage Devices : Tag: Engineering Chemistry : - Types of Battery