• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Electrolysis is the process of physically splitting water.

Extracts from this document...

Introduction

Electrolysis is the process of physically splitting water, using an electrical current as a catalyst, into its base components of hydrogen and oxygen, or

2H2image00.png2H2 + O2

During the process the products will be collected by two cathodes, one positively charged and one negatively charged.  The Positive cathode will collect the Oxygen and the Negatively charged cathode will collect the Hydrogen. (DOE 1998). 

Current uses of renewable energy sources such as solar, wind, and hydro are sources of energy which are not easily stored for future use. That is, 

揑n the mid to long term, a large and growing renewable-based electric power system will require significant storage capacity梙ydrogen will provide perfect storage medium.?(US DOE)

Also, these sources of energy give endless possibilities of how and where electrolysis can be used.

...read more.

Middle

A high operating cost has forced the use of this production method to be limited.  Using current technology, the cost of producing this extremely pure Hydrogen is relatively high, to the now popular method of hydrogen production through natural gas steam reforming.  Most of the cost of electricity (80%) is that required to fuel the reaction. (DOE 1995).  With present technology, the yield of hydrogen from electricity is less than 8%.  The US DOE has set a goal to research different approaches until they reach an acceptable yield of 10% for widespread use.  This yield will be reached with the advent of more efficient semi-conductors which can withstand corrosion introduced in this process.  揗ost semiconductors are thermodynamically unstable in water.?NREL 1999) 

What is the optimum source for electric current to fuel the reaction?

...read more.

Conclusion

Currently there are numerous studies as to the feasibility of photoelectrolysis.  Numerous institutions are investigating the possible materials that can lower the cost for the solar panels to be used in this process. 

Wind Electrolysis. The source of electricity for this process is, quite simply, wind.  Wind will be harnessed through the use of windmills and power generators. 

The windmills will power the generators that will then fuel the electrolysis process.  At this time there is study in Southern New York, which, in cooperation with Cornell University, is studying the feasibility of 揥ind-Hydrogen Power.?nbsp;

Hydro Electrolysis.  Hydro Electrolysis entails using hydroelectric power plants to fuel the electrolysis process.  Using this process will be not as widespread as the above-mentioned processes.  Currently Hydroelectric power plants are few and far between, and the environmental requirements for the construction and use of one are quite limiting factors.

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Electrical & Thermal Physics essays

  1. Characteristics of Ohmic and non-Ohmic Conductors.

    The heating could have been even slower I could have also used a filament lamp and thermistor with a higher voltage range. My experiment is pretty reliable, because I conducted each experiment twice, and I have not found too many sources of error present.

  2. Assess how changing the electric current in the electrolysis of acidified water affects the ...

    The preliminary work showed that the greater the acid concentration, the greater the current, therefore an increase in acid concentration will make the solution a better conductor and result in a decrease in resistance. Method 1. Set up the apparatus as shown in the diagram.

  1. Characteristics of Ohmic and Non Ohmic Conductors.

    It shows that in the sunlight the graph is more steep and in the shade it will be less steep. The straight lines do not mean that the LDR is an ohmic conductor. The light intensity remains the same. But if the light intensity were to change the resistance also would change.

  2. To investigate the effects of two different variables on a solar cell output.

    For the distance variable, using the equation stated before, Light Intensity= Power/area, we can work out the light intensity as the distance between the source of light and the solar cell varies. Light spreads out in all directs, in the shape of a sphere, therefore it will occupy 4?r� amount

  1. The electrolysis of copper from copper sulphate solution

    Average Current (Amps) (2dp) 1 0.53 0.8 0.31 0.6 0.23 0.4 0.14 0.2 0.09 0 0 Now I need to work out how many moles of electrons there are in coulombs for each concentration. Time MULTIPLIED BY Current Quantity of Electrons Quantity of Electricity DIVIDED BY 96000 Moles of electrons

  2. A comparison of the efficiencies of solar cells and solar panels

    x 100 Solar Panel: Below are diagrams to show how the experiment will be set up to measure the rate of heating of water by the bulb: Procedure: Set up the equipments as shown above.

  1. How does the mass of copper plated in the electrolysis of copper sulphate solution ...

    the emersion of the electrodes at the same height, the height is going to be 8 cm. This is important because this depends on how much of the area of the electrodes are actually in the electrolyte being part of the electrolysis (being in the reaction).

  2. Investigate the effects of two different variables on a solar cell output.

    We know that this is the case because when combining the two below formulae, we can see that energy and frequency are related. Wavelength x Frequency= Wave Speed Planck's Constant x frequency= Energy The second formula states that frequency is directly proportional to energy.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work