I tried some experiments with creating a simple voltaic cell.
I started with a paper towel soaked in salt water. Electrodes were zinc and carbon. Voltage was around 0.7 volts.
Using a dropper, I then added some 3M H2SO4 around the carbon rod. This brought the voltage up to around 1 volt.
I then added some 3M NaOH solution under the zinc electrode. Doing this brought the voltage up to around 1.5 volts.
I then added some 12% H2O2 solution (on top of the H2SO4 already added) around the carbon rod. This brought the to voltage up to around 2 volts, and
allowed me to light a red LED.
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