Saltwater Plus Air Equals Battery?

Experiments about home-made batteries are now rampant as the world today is facing an energy crisis. With this project, we can prove that electricity or electrical energy can be derived from saltwater and air. It is also good to note that air and saltwater are everywhere and free. We don’t have to purchase them. In this science project, we will make a battery out of saltwater and air and eventually we will find out how saltwater affect the prduction of electricity.

PROBLEM

Can we make a battery out of saltwater and air?

HYPOTHESIS

Saltwater and air can make up a battery with the same concept as burning wood for heat energy.

MATERIALS

  • A cup of saltwater
  • Miniature light bulb with low voltage or low current
  • Miniature base for light bulb
  • Screws for the miniature base.
  • A wooden board to mount the miniature base (light holder)
  • Pair of insulated solid copper wire AWG=20
  • Pair of alligator clips
  • Magnesium Electrodes
  • Iron Electrodes
  • Plastic container about 4″ x 4″ x 4″
  • Hydrogen Peroxide

PROCEDURE

  1. Remove the plastic insulation of about one inch from both ends of the wires.
  2. Loosen the screw on both contacts of the bulb holder. Place one end of the red wire under one screw, make a loop and then tighten the screw. Place one end of the black wire under the other screw, make a loop and then tighten the screw.
  3. Pass the open end of the red wire through the arm of the red alligator clip and secure it under the screw.
  4. Pass the open end of the black wire through the arm of the black alligator clip and secure it under the screw.
  5. Screw the light bulb on the miniature base.
  6. Connect the red alligator clip to the iron electrode and secure it on one side of the plastic container or the cup.
  7. Connect the black alligator clip to the magnesium electrode and secure it on the opposite side of the container.
  8. In another pitcher, prepare some strong, warm salt water. Add enough salt so at the end some salt will be left at the bottom of the pitcher.
  9. Transfer the salt water from the pitcher to the container.
  10. At this time, if all the connections are secure and the electrodes are large enough, you should get a light.

RESULTS / ANALYSIS OF DATA

Record the time when and how long it started to light. Check if electrodes are touching each other and have the maximum surface contact with the saltwater. Make sure that alligator clips are not touching the saltwater. If these are all done, you should be getting enough light through the new improvised battery.

 

CONCLUSION

Indeed, we can make a battery out of saltwater and air. This can be an optional source for electrical energy. A cup is relatively small. However, if we have a larger container, more electrical energy will be produced.

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