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Step 15Other designs_7: The Palugraph lemon battery
The Paper Aluminium Graphite battery
One of the simplest battery that you can make with common household items in less than a minute. Extremely light and thin, but will last just a few hours and is not very powerful. Good for demonstrations with a voltmeter.
Details:
peak voltage: 0.6V
duration: 1-3 hours
weight: 0,42g
volt / weight ratio: 1,4 V/g
thickness: 0,15mm
Materials:
Paper sheet about 3cm x 3 cm
Soft Pencil (6B - 8B)
Gel hand dish washing liquid, or lemon juice.
Instructions:
Draw a square with the pencil on the piece of paper, filling the same square more times until
the resistance measured with the tester between two points on the square, not less than 1 cm from each other is less than 500ohm.
Ok, you can draw whatever you want, not just a square ;)
Put the aluminium foil under it and place two small pieces of scotch on the sides to
minimize the gap from the paper and the aluminium foil and to secure them.
Finally, drop some drops of dish soap on the square drawn with the pencil.
Voila', the battery is finished!
The difference of potential between the square and the aluminium is about 0,60V and will last for about 1-3 hours, mostly because the dish soap (or lemon) will dry out.o
One of the simplest battery that you can make with common household items in less than a minute. Extremely light and thin, but will last just a few hours and is not very powerful. Good for demonstrations with a voltmeter.
Details:
peak voltage: 0.6V
duration: 1-3 hours
weight: 0,42g
volt / weight ratio: 1,4 V/g
thickness: 0,15mm
Materials:
Paper sheet about 3cm x 3 cm
Soft Pencil (6B - 8B)
Gel hand dish washing liquid, or lemon juice.
Instructions:
Draw a square with the pencil on the piece of paper, filling the same square more times until
the resistance measured with the tester between two points on the square, not less than 1 cm from each other is less than 500ohm.
Ok, you can draw whatever you want, not just a square ;)
Put the aluminium foil under it and place two small pieces of scotch on the sides to
minimize the gap from the paper and the aluminium foil and to secure them.
Finally, drop some drops of dish soap on the square drawn with the pencil.
Voila', the battery is finished!
The difference of potential between the square and the aluminium is about 0,60V and will last for about 1-3 hours, mostly because the dish soap (or lemon) will dry out.o
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