Batteries are used to store energy. A 1.5 V battery provides energy equivalent t

Question

Batteries are used to store energy. A 1.5 V battery provides energy equivalent to 144.7 kJ/mole. The table below provides some information about 1.5 V batteries. Discuss some benefits and drawbacks of using the reaction you performed in place of a 1.5 V battery based on the information provided.

Battery Type      Total Energy Content (J)      Battery Volume (mL)      Battery Mass (g)

AAA                         5071                                       3.9                                  12

AA                           9360                                        8.3                                  24

C                            34398                                      26.5                                 65

D                           74970                                       55.8                                135

Explanation / Answer

Batteries are simple devices. The battery is a combination of two or more electric cells. The simplest cells are made up of plates of two different kinds of metal, which are kept in salty or acid liquid. When a wire connects the two plates, electrical current flows between them.

Advantages : It include high energy output, reliability, long shelf life and superior low temperature performance.

We know that, batteries are used to store energy. Here, a 1.5 V battery provides energy which equivalent to 144.7 kJ/mole. Most battery chemistries lend themselves to series and parallel connection. It is important to use the same battery type with equal voltage and capacity (Ah) and never to mix different makes and sizes.

A 'weaker cell' would cause an imbalance. This is especially critical in a series configuration because a battery is only as strong as the weakest link in the chain. An 'analogy' is a chain in which the links represent the cells of a battery connected in series.

The benefits and drawbacks of Lithium ion battery which are given as :

Benefits -

(a) High energy density

(b) Self discharge

(c) Low maintenance

(d) No requirements of priming

Drawbacks -

(a) Protection required

(b) Transportation

(c) Cost

(d) Immature technology

Conclusion : Choosing one battery over the other is not hard as it may seem. It just comes down to usage and cost. How often will the battery-powered device be used and How much energy does it consume?

From there, we can make a rational decision as to which type of battery is most appropriate for our application.

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