I'm playing at home,
making some hydrogen,
using rain water,
not a lot, showing the kids,


Anyway

anyone got a site or two that tells us about water electrolysis ?


I find many , but the searches I use, seem to find lots of
"crack pot " ideas to make cars run for ever etc... !

and lots of contradiction,

would like a reliable reference or two to read through please.

The low level I'm at........


Things like,
voltage , Seems I need to increase this as the plates are moved apart . is there an equation / theory ( dont know what name to search for )

The current seems to heat the water, power has to go some where, IM guessing some energy goes into splitting the water, other into heating the water, efficiency ? sorry numpty questions

If I use "steel" nails , I get brown water .. Would I be better with coper , stainless steal, or what

As you see, to many questions
( to much time on my hands now days )

so Im after some sites to read up on


Thank you

 

I'm playing at home,
making some hydrogen,
using rain water,
not a lot, showing the kids,


Anyway

anyone got a site or two that tells us about water electrolysis ?


I find many , but the searches I use, seem to find lots of
"crack pot " ideas to make cars run for ever etc... !

and lots of contradiction,

would like a reliable reference or two to read through please.

The low level I'm at........


Things like,
voltage , Seems I need to increase this as the plates are moved apart . is there an equation / theory ( dont know what name to search for )

The current seems to heat the water, power has to go some where, IM guessing some energy goes into splitting the water, other into heating the water, efficiency ? sorry numpty questions

If I use "steel" nails , I get brown water .. Would I be better with coper , stainless steal, or what

As you see, to many questions
( to much time on my hands now days )

so Im after some sites to read up on


Thank you

This paper might help some.

 

this is a problem of electro-chemistry. The water converts salt into ions (splits NaCL into Na+ and CL-. As a result, the ions are attracted to the electrode of the opposite sign. All the action is at the electrode (at least that's my understanding.) I'm no expert, but I do know the math and physics.
This book does not address your question but you may find it useful:
https://link.springer.com/book/10.1007/978-3-030-53759-3

 

This paper might help some.

A quick read, thank you
amazing, even in 2016, things like water resistance still forms a paper,

 

this is a problem of electro-chemistry. The water converts salt into ions (splits NaCL into Na+ and CL-. As a result, the ions are attracted to the electrode of the opposite sign. All the action is at the electrode (at least that's my understanding.) I'm no expert, but I do know the math and physics.
This book does not address your question but you may find it useful:
https://link.springer.com/book/10.1007/978-3-030-53759-3

Thanks , but Im a cheap skate,
also, was not planning to add salt,

 

I'm playing at home,
making some hydrogen,
using rain water,
not a lot, showing the kids,


Anyway

anyone got a site or two that tells us about water electrolysis ?


I find many , but the searches I use, seem to find lots of
"crack pot " ideas to make cars run for ever etc... !

and lots of contradiction,

would like a reliable reference or two to read through please.

The low level I'm at........


Things like,
voltage , Seems I need to increase this as the plates are moved apart . is there an equation / theory ( dont know what name to search for )

The current seems to heat the water, power has to go some where, IM guessing some energy goes into splitting the water, other into heating the water, efficiency ? sorry numpty questions

If I use "steel" nails , I get brown water .. Would I be better with coper , stainless steal, or what

As you see, to many questions
( to much time on my hands now days )

so Im after some sites to read up on


Thank you

By the way, in spite of you being a cheapskate, you want platinum electrodes to reduce the contamination. I built an “Electrolysis of Water” exhibit for the Museum of Science in Boston a few decades ago. It was to replace one that used a cam timer and open loop. It would electrolyze for a bit, then fire a small spark for a little pop. Pretty neat, but…

The exhibit had a little of problems with the scale of use it got (~2 million visitors a year). Of course the water got heated by the process so after so many cycles it would boil. A big mess. It would also eat electrodes.

Another problem was the UI. There was a start button but of course to took a while to see anything. There was no feedback to acknowledge the button press, so the visitor would push it, wait about 1-2s, push it again, wait again, then press it repeatedly. If they were specially impatient, they would commence to banging on the button—then, form the very first gentle button press (unbeknownst to the naîve visitor), bubbles started forming.

The visitors waiting in line, equally naïve, “learned” that the button required an iron fist, and so skipped directly to the banging phase, but of course, it took just as long. If there was a school group, the switch needed replacing by the end of the day.

We fixed that problem by replacing the microswitch-based button for a pinball machine flipper button with a leaf switch (Waco was the manufacturer, great stuff). It never needed replacement. The only problem was fitting it into the space because it was larger, but we managed.

In any case, it needed redesign so I got some platinum electrodes to solve that problem, replaced the cam time with a PLC, and provided status indicators “WORKING PLEASE WAIT” and a beep on button press; “COOLING DOWN PLEASE CHECK BACK” when the water temperature was too high, and some other enhancements.

 

Thanks , but Im a cheap skate,
also, was not planning to add salt,

Don't add salt, or you will get Chlorine!

 

Thanks , but Im a cheap skate,
also, was not planning to add salt,

The pdf is online if you look a bit harder. It is therefore free, as long as you dont print it, which is the expensive step.

 

The pdf is online if you look a bit harder. It is therefore free, as long as you dont print it, which is the expensive step.

Don't add salt, or you will get Chlorine!

of course NaCl is composed of Na and Cl and electricity splits them. SO make sure you collect the gas safely.
What is the best salt so that you get 1 H and 2 O ?
Can you control the reaction by setting the voltage so H2O spilts and not NaCL?

 

of course NaCl is composed of Na and Cl and electricity splits them. SO make sure you collect the gas safely.
What is the best salt so that you get 1 H and 2 O ?
Can you control the reaction by setting the voltage so H2O spilts and not NaCL?

You get 2 x \(H_2\) and 1 x \(O_2\)
Lead acid batteries seem to manage it very successfully with sulphuric acid electrolyte.
Sodium or Potassium hydroxide also appears to work well.

 

You get 2 x \(H_2\) and 1 x \(O_2\)
Lead acid batteries seem to manage it very successfully with sulphuric acid electrolyte.
Sodium or Potassium hydroxide also appears to work well.

thanks. Duh re 2H 1O.

 

To high light , as its got a little lost

I am NOT going to use Salt ,