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Barrowman 12-17-20 05:45 AM

Earth Battery
Has anyone done any work on earth batteries?

Daox 12-17-20 05:41 PM

Never heard of them. Got a link to more info?

Barrowman 12-18-20 03:14 AM

Well this link has information and it has lots of links too.
I get the feeling that little actual practical work is being done now and that they have untapped potential.
I have a few ideas myself and am waiting for some bits I ordered to arrive so I can test them out.
Here is information from part of an article published in 2008.

Combinations of Magnesium anode and Coke cathode; Zinc anode and Graphite cathode; Aluminum anode and Carbon cathode; Zinc anode and Copper cathodes gave 2.05, 1.40, 1.10 and 0.9 volts per cell. Typical rated power of a single Zn-Cu cell was measured to be few tens of microamperes. Small power electronic devices such as calculators, electronic watches, baby toys and cell phones and white light LEDs were operated on site. The voltage level was found to increase linearly by connecting multiple earth battery cells in series like commercial lead acid battery. The load current was found to increase by connecting earth cells in parallel. The source current capacities were also found to increase by increasing surface areas of the electrodes. However, single cell voltage was found to remain constant irrespective of the electrode sizes. This paper reports detailed characteristic study of the most cost effective and accessible metal electrodes earth batteries. Operation of earth battery as a free electricity source was demonstrated successfully

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