Question

Describe in general how batteries are constructed and provide energy. What must happen be in order for a battery to be rechargable?

Answer 1

Batteries are like portable source of energy. Currently we are more likely depend on this type of energy source because we are using batteries in all Important things. like we are using batteries in automobiles, mobiles, watch, UPS, Inverter etc.

Basically Batteries are the device which convert chemical energy into a electrical energy.

As per construction part is concerned Batteries consist of mainly three parts

a) Electrodes - there are two electrode in a single battery. Electrode are made of conductive material. One of the electrode is known as cathode, which is connected to the positive terminal of the battery and the other one is known as anode, connected to the negative terminal of the battery. the anode is typically made of zinc, and manganese dioxide acts as the cathode

b) Electrolyte - Thisis liquid or gel like substance which content electrical charged particle or ions. this material combine with the material of the electrode and produce chemical reaction that allow battery to produce current.

c) Seperator - as the name suggest, seperator is used to seperate the anode and cothode inside the battery. In short, without seperator the electrodes would come in contact and there will be chance of short circuiting.

working- let us take an example of flashlight - that uses a AA battery to produce Light.

When you connect a battery inside the flashlight and put the button on, you just completing the circuit. as a result of which the stored chemical energy inside the battery converted into the electrical energy, which travel out the battery and cause the flash light bulb to turn on. hence all the parts of the bettery works together to put the flash light on.

further we divide the batteries into two categories - one is non-rechargeable batteries or primary cell and the other one is rechargeable bateries or secondary cell. In secondary cell, the reverse reaction takes place.When electrical energy from an outside source is applied to a secondary cell, the negative-to-positive electron flow that occurs during discharge is reversed, and the cell's charge is restored. the most common rechargeable battery in market these days are LION battery.