making instant batteries - oxygen absorber
Survival usually means successful survival after some events that threaten a person.
In our daily life, survival is not obvious, because we are surrounded by the comfort of technology, we may not even consider survival.
Food, water and accommodation are convenient.
But in a country usually hit by typhoons and other disasters, survival is crucial.
We know it very well in the Philippines, because we encounter no less than 10 typhoons every year.
Our country is also in a circle of fire, and in order to survive in adverse conditions, when this happens, we must have knowledge at all times.
In this manual I will share how to make instant batteries using easy-to-get materials that can be found in our home.
It should also be easy to make.
If there is a power outage after the typhoon, it will be valuable.
We can power the LED flashlight with these batteries.
We're making an instant battery called aluminum.
Air battery it uses aluminum as more information you can read this type of battery electronically
Chemical reaction between aluminum and air.
The reaction is Al 3oh → Al (OH)3 + 3e− +2. 31 V.
Half of cathode reduction-
The reaction was O 2 H 2 O 4 e → 4 oh-0. 40 V.
The total reaction is 4Al 3O 2 6 H 2 O → 4Al (OH)3 + 2. 71 V. About 1.
The 2 volt potential difference is produced by these reactions, which can be achieved in practice when koh is used as an electrolytic mass.
The salt water electrolyte reached about 0.
7 volts per battery.
I also tried sodium hydroxide as electrolyte and it gave 1. 25 volts.
Pond Water to 0. 4 volts.
You can try urinating when the situation comes up, as it's hard to find any electrolyte liquid that can give about 0. 8 volts. 1.
Aluminum as the anode of any form of pure aluminum (
Foil, bar, tank, Truss)
I use aluminum on the lid of the easy open milk can2. water3.
Any of the following sodium hydroxide (lye)
Or sodium hydroxide (caustic potash)
Or sodium chloride (salt)
Warning: Please be careful when you choose to use alkali or caustic soda.
I can also work using paper towels, napkins or any non-smooth paper.
Charcoal is used as a cathode, with 6.
Below can also use the carbon black, activated carbon and soil I have tested.
In addition to our materials, please prepare more than one
A tester for checking the continuity of batteries, sandpaper, scissors, disposable syringes, disposable spoons, pliers, charcoal plastic containers, water glass for easy and quick construction of batteries.
Aluminum is prepared by polishing aluminum to increase the surface area.
When the aluminum is shiny, it is specially polished.
In order to increase the area of the chemical reaction, it is necessary to increase the surface area.
Use scissors to cut small pieces to prepare the screen.
Please make sure the screen is smaller than the paper towel.
The aluminum wire screen should not be in contact with each other, which is why there is a paper separator to prevent short circuit.
Fold 4 layers of paper towel as a separator to make the paper towel thicker so that it can hold more electrolyte solutions and prevent short circuit.
If your battery is short-circuited, it will not produce a voltage, it will get hot and it will produce hydrogen.
Cut the connection line of the required length.
Connect the black wire to the aluminum, which is our anode and will be the negative terminal.
Connect the wire safely with aluminum.
What I did was cut on the edge of aluminum (
And connect the wire on it, and then fold the aluminum together with the connection line to create a strong connection.
Connect the red line to the wire screen.
The cathode consists of a screen and charcoal, which will be the positive pole of the battery.
Place the paper towel between the aluminum mesh and the wire mesh.
Add 4 paper towels.
Make it a sandwich, aluminum, paper, silk screen.
Aluminum and the screen should not be in contact with each other and should not fold more paper towels so that when we add an electrolyte solution it will not tear.
Warning of corrosion.
It doesn't matter if you use salt, tap water or pond water because it's not corrosive.
Please be careful if you are going to use alkali.
You can see clearly on the label.
Keep away from children and handle them properly.
When you accidentally spill it on your skin, wash it immediately with tap water to reduce skin burns.
My electrolyte solution is made up of 10% sodium hydroxide.
9 water and 1 sodium hydroxide.
Put 10 ml into the syringe first, then put 90 ml of the water into the syringe, which will automatically mix and form a solution.
Increase protection with gloves.
I tried a different electrolyte solution with salt water, pond water and it all worked, but the alkali worked best.
When you make a sandwich with aluminum paper and wires, the time to add an electrolyte solution must wet the paper towel with an area of 90%. use multi-
Tester and watch when you pour in solution, you can make a voltage reading once the paper is wet.
The powder charcoal is then finally added, which serves as an oxygen absorber, helping to speed up the reaction.
Add solution on paper before charcoal.
Add the charcoal first, then pour it into the solution, which will minimize the contact area between the air and the charcoal.
It's good if your paper towel is soaked in a solution, just be careful not to add too much charcoal until the charcoal touches your aluminum.
If this happens, it will be short-circuited.
Throw the charcoal and paper together, then wash the aluminum with a screen and start over.
I made 5 batteries to generate enough power to light up the LED flashlight, digital watch, small DC motor and boost converter, but using a boost converter circuit on my battery as a load my battery is not charging long enough.
The total voltage generated is 6 volts, which means that the average voltage of all batteries is 1 volts. 2 volts.
If you want to pile up your battery, make it look more like a battery (
Pictures from the beginning of the instructures)
Maybe in the future, if I can make a better battery to generate a stronger current, or you can do it, I can use it to charge my phone. :)
At the moment, I am happy with the results as it is working and my battery is able to power some useful electronics and made from recycled materials.
I tried to check its versatility using different solutions and materials.
I tried the salt water and got 0.
7 V, I tried replacing charcoal with soil/mud and it could also give 0. 75 volts.
Pond water and soil were tried, salt water and mud, salt water and activated carbon were tried, and alkali solution and activated carbon were tried.
The latter produces the highest voltage and current.
That's why I said that you can use urine as an alternative electrolyte at the beginning of this manual, because this battery is not very sensitive and you can try to experiment on different materials.
Free to explore.
Thank you for reading this instruction.
I hope you do one too.