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It's possible to make a battery using cat food! To do this, open the tin preferably without the cat being near otherwise it'll expect to be fed. Put a fork into the middle of the food so the fork stands up and doesn't touch the can. Now there is a voltage between the fork and the tin can. This is because the fork and the can are made of different metals and the cat food becomes an electrolyte and conducts electricity to some extent. The amount of electricity generated by a catfood battery is not great and won't light a bulb, but it is measurable and will drive "solar" motors.
The original burrito battery. You'll need some activated charcoal too.http://www.exo.net/~pauld/activities/AlAirBattery/alairbattery.html
... what I am trying to do is make a battery at the lowest possible cost.
From 2001 until 2008, the price of the metal has increased by more than 500 percent.
biogas (methane) from animals' excrement
Quote from: Geezer on 27/06/2011 23:19:42The original burrito battery. You'll need some activated charcoal too.http://www.exo.net/~pauld/activities/AlAirBattery/alairbattery.htmlThanks geezer for that link. However what I am trying to do is make a battery at the lowest possible cost. The idea being that people who have no electricity and very little money would be able to resource the ingredients locally and provide themselves with some lighting. This would hopefully allow people less fortunate then ourselves to at least have the possibility of being able to study or all of the other things you can't do without light in the evenings.
As I recall, Al is very good because it is so reactive. Unfortunately, because it is so reactive it also oxidises very quickly, and the oxide impedes further reaction. However, if you can figure out a way to remove the oxide mechanically or by some other means.......
Aluminum battery science?
Europositron Rechargeable Aluminum Batteries. "Europositron Powerful Aluminum Battery to Hit Market in 2007 - Europositron of Finland has developed an innovative nano scale electrochemistry technology that allows the production of rechargeable aluminum batteries. (Electrifying Times; Spring/Summer 2006; Vol. 10 No. 1) Giant Aluminium batteries are for real - Ab Europositron Oy has been conferred the prestigious 2005 Frost & Sullivan Technology Innovation of the Year Award in the field of battery technologies. (ZPEnergy; March 23, 2005) Award for Europositron's Technology Innovation in Battery Technology - Ab Europositron Oy has been conferred the prestigious 2005 Frost & Sullivan Technology Innovation of the Year Award in the field of battery technologies. (Azonano; 23rd March 2005)""District court finds fake inventor The Helsinki district court has taken an inventor, who for years has been collecting money by issuing stocks, under custody, the newspaper Helsingin Sanomat says. Europositron Ab has sold stocks to hundreds of Finns for at least 1.3 million Euro despite the invention the company is marketing is a pure "product of imagination" according to the police. The company have had large advertisements in newspapers during the the years 2001-2007 and has sold stocks in three issues. Europositron has been collecting money from investors for a aluminum battery which was supposed to be developed with the help of "nano chemistry" and which promised to be 20 times lighter and with a much longer durability than today's batteries. According to testimonies the police has collected, the inventor is not real and Europositron has had no other business than issuing stocks. Helsingin Sanomat says six investors finally got tired with the inventor and reported him to the police."