Friday, July 31, 2015

Home made Carbon Aluminum battery - DIY

This is an experiment of Aluminum Carbon battery the maximum voltage of is approximately 1.1 volt and i have tested it lasted quite sometimes and the charged reduce to 0.97 volt after 16 days time. At that time top up its electrolyte will bring back the voltage to 1.1 volt again which means this is somewhat rechargeable.

From this experiment I have understand that the battery charges lost is due to its electrolyte charges diminishes instead of the cathode and anode (aluminum and the graphite carbon). It can be recharged by adding new electrolyte solution into the battery. It is no wonder in car batteries we add more electrolyte (battery water) mixture of distilled water and some addition of manganese oxide into it. This principle should be same for commercial cell batteries such as the AA, AAA, etc. What make them no longer usable is because of the electrolyte charges are drained out.

Another thing we can learn is that rather than copper or stainless steel metal it's better to use carbon (positive) and aluminum (negative) as the terminals. It works better and produce more voltage - not sure what the cause but probably due to the mixture of the electrolyte chemical solutions.

The corrosive nature of the electrolyte determine how much voltage and probably the amperage of the current flow. The more acidic the electrolyte solution the more voltage and amperage of the current it produces.

The outcome of this experiment gives some ideas:

1. We maybe able to recharge dead AA or AAA batteries by adding new acidic solution in it
2. Carbon and Aluminum works better together compare to steel or copper
3. The higher the acidity of the solution the more amperage and voltage of the battery
4. One question to ponder does that the corrosive accelerate the electrons movement? Just like how magnet spin against coil of copper wire the faster it moves the more current it produces

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