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Design an electrochemical cell that produces optimal energy - Coggle…
Design an electrochemical cell that produces optimal energy
what is an electrochemical cell
An electrochemical cell is a device that can generate electrical energy from the chemical reactions occurring in it, or use the electrical energy supplied to it to facilitate chemical reactions in it. These devices are capable of converting chemical energy into electrical energy, or vice versa.
What does it mean to
produce optimal energy?
requires a low amount of materials to produce energy or the cell that pruces the energy
the amount of energy produces is easy to control
The cell produces a large amount of energy
how to measure energy
A Watthour (Wh) is equal to the energy of one Watt steadily supplied to, or taken from, an electric circuit for one hour. The amount of electricity that a power plant generates or an electric utility customer uses is typically measured in kilowatthours (kWh). One kWh is one kilowatt generated or consumed for one hour.
Different tools can be used to measure enery such as an electricity usage monitor that tells you exactly how many kWh a device or appliance is drawing. The monitor can be as simple as a "plug load" monitor that plugs into an outlet; then you plug the device/appliance into the monitor.
different experiments
Could look at the effect of changing concentrations of the electrolyte solution on the amount of voltage produced in the electrochemical cell
Look at the effect of changing surface area of metal electrodes in the electrolyte solution and whether changing the surface area of the same metal will cause the voltage to be higher, lower or the same.
Investigting diffferent metal electrodes and seeing which type of metal will react with a constant metal to produce the highest voltage.
different factors affecing
energy output in a cell
Concentration of electrolyte solution
Surface area of metals
Type of metal
methods of increasing energy output
Increasing concentration tends to increase the voltage in an electrochemical cell
increasing the temperature which will increase the degree of dissociation and increase the concentration of metal ions.
types of metal electrodes
Aluminum
Copper
Lead
Nickel
Iron
Zinc
When disussing the effect of metal electrodes in an electrochemical cell, the meal reactivity series can be utilised to pre-determine which metal will produce the highest voltage.
Types of Electrochemical Cells
Galvanic
discharching
electrons move from anode to cathode
Cathode cations (+) move to anode which is done by oxidation and the anode anions (-) move to the anode also done through oxidation
Electrolytic
recharging
uses a power source as a form of reversing the chemical reaction that takes place in the cell
cathode cations (-) accept electrons by force through odixation and anode anions (+) release electrons by force also through oxidation
Both cells contain a salt bridge
The salt bridge is used to complete the cell or circuit which enables the release of ions to ensure that there is no built off in the half cells.
salt bridges can be made using filter paper, paper towels or glass.
