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  • Author Author: kk99
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Salt water cell

kk99

Mixing Electronics & Water

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It is only general idea to create low power device with salt water cell as power supply. Here is example of salt water cell. It is made from:

- two glass containers,

- two copper electrodes,

- two silver electrodes.

Voltage generates by this two cell is around 1.5 volt. Here is example image:

I am thinking if it is possible to use this cell as power supply to electronic device like simple egg timer. Please comment below what you think about that.

 

Update:

It looks like that in current form salt water cell is able to generate voltage around 1.7 volt and current around 4-5 uA. As was mentioned in comments most important think is proper material and shape of electrodes. Here is video from quick test:

Anonymous

  • If you mix salt water with fresh water it is possible to extract energy (without consuming metal electrodes)  - Google "salination energy"

     

    MK

  • The current can be increased by increasing the surface area of the electrodes and the internal resistance can be lowered by decreasing the distance between the electrodes.

     

    John

  • Salt water cells are cool ideas to help spark interest in students.  I used to supplement my lesson plans in a technical school setting with little experiments to help get students poor interested in electronics.  I would build and demonstrate various methods of generating electricity, like build different batteries, including salt water cells. 

     

    Interesting idea , the salt water waste stream is an excellent source of potential energy, assuming that the cell material (electrodes) are not quickly contaminated by the waste products in the stream.

     

    Gene

  • Interesting Idea.

    I was thinking of using salt water waste from a water softener purge to collect the current.

    If you want to pursue this idea, you need to put your cell under a load and see how much current you can produce and for how long.

    Once you have that information, you can assess how well a basic saltwater cell could power a given circuit.

     

    DAB