Lead storage cell

The voltage of the lead storage cell is then given by... 

The lead storage battery provides electrical power in automobiles. It is well suited for this use because it supplies the large current needed to drive starter motors and headlights and can be recharged easily. Figure 19-20 shows the lead storage cell in a schematic view. The half-reactions are the subject of Example ... 

Schematic view of a 6-V iead storage batteiy. Lead is oxidized and lead(IV)oxide reduced during the operation of this battery, which contains three cells connected in series.

C19-0086. Set up the Nemst equation for the lead storage cell, and use it to show that the voltage of this cell must decrease with use. 

The lead storage cell (six of which make up the lead storage battery commonly used in automobiles) will be discussed as an example of a practical cell. The cell, pictured in Fig. 14-2, consists of a lead electrode and a lead dioxide electrode immersed in relatively concentrated H2S04 in a single container. When the cell delivers power (when it is used), the electrodes react as follows ... 

Explain why a Daniell cell cannot be placed in a single container, like the lead storage cell. 

A well-known use of lead is also in the familiar lead-acid storage battery. This device is an example of a storage cell, meaning that the battery can be discharged and recharged over a large number of cycles. The lead-acid battery is familiar as a battery in your car. 

Consider the battery in Fig. 7.18. The sodium beta alumina barrier allows sodium ions formed at the anode to Row across to the sulfur compartment, where, together with the reduction products of the sulfur, U forms a solution of sodium trisulfide in the sulfur. The latter is held at 300 CC to keep it molten. The sodium beta alumina also acts like an electronic insulator to prevent short circuits, and it is inert toward both sodium and sulfur. The reaction is reversible. At the present state of development, when compared with lead storage cells, batteries of this sort develop twice the power on a volume basis or four times the power on a weight basis. 

The most well-known storage cell is the lead-acid cell, which was invented by GASTON PLANTE in 1859 and is still the most widely used device of its type. The cell is represented by... 

Gaston Plante (French) Invents the first practical lead-acid storage cell... 

The recharge of a lead storage cell in an automobile battery can be represented by the following equation ... 

The lead storage cell, six of which constitute the lead storage battery, is familiar for its use in most automobiles. It will be described in some detail because it has several features that are different from those of the Daniell cell, described earlier. The lead storage cell (Figure 17.2) consists of a lead electrode coated with a paste of lead(II) sulfate and another electrode which has lead(IV) oxide as the active oxidizing agent, also coated with lead(II) sulfate. The electrolyte is concentrated sulfuric acid, in which PbS04 is insoluble. Both electrodes are situated in the same solution. The half-reactions are... 

Explain why a salt bridge is required in a Daniell cell, but not in a lead storage cell. 

In the lead storage cell, all the reactants and products are solids and cannot migrate in the sulfuric acid, so both electrodes can be placed in the same solution. 

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