Electrolysis: Producing hydrogen from water

Producing hydrogen from water: Electrolysis involves splitting water into hydrogen and oxygen with the help of electricity. When a direct current is passed through the water, oxygen appears at the positive anodes, while hydrogen is released from the negative cathodes. In terms of volume, exactly two times more hydrogen is produced than oxygen.

As pure water is not a good conductor of electricity, something like salt is added – not a very environmentally sound method. If you use a proton exchange membrane, PEM for short, it is possible to extract hydrogen from pure water, as the membrane provides the necessary particle transport between anodes and cathodes.

--- Note: As of June 13, 2017 Petrol Ofisi A.S. is no longer part of OMV Group.

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[mariociencia]

Although brief, the video shows clearly that H+ is formed in the anode and then transformed into H2 in cathode. The video also shows that H+ can be translated from one electrode to another through a proton exchange membrane. Very nice!

[hotsauceislethal]

Where did I leave my Proton Exchange Membrane at?

[tilsondelacruz]

Talk more about the Membrane materials, or semi conduct electrical

[nishascrafts]

Thanks for making this video I'm watching this a night before my exam and I'm feeling so relaxed to answer the questions which will be about electrolysis tomorrow . This video has helped me a lot even if I don't open my book I can still answer the questions in my own words and get full marks. Thanks buddy👍🏻
- Std 9 student

[thysultan]

More salt water than not. How much energy is used to extract 1kg of hydrogen from the equivalent water(9liters)?

[shawnmccori]

I discovered with a rusted nail that backing soda that hydrogen molecules would turn baking soda yellow in water and a battery attached to the rusted nail. The water was blue to to only oxygen in the water.

[kesaya]

Hi OMV,
Thanks for the good presentation and video! Me and my school project teammates are using this for research.

[Kintatsu]

So, if I wanted to set up a hydrogen extraction rig in my backyard using rainwater, I wouldn't need a filter, because the impurities would actually help?

[witherwolf]

What are Proton Exchange Membranes typically made of, in the simplest terms?

[michaelwilson]

We use this with polymer injection before a DAF to skim oil and separate from water to reuse for steam injection on wells and recycle the oil

[paulsunday]

What makes the addition of salt not environmentally friendly?

[soa]

So if pure or distilled does not conduct electricity then how is the hydrogen split from the water. It is the electrolyte that is being broken down and not water.

[keerthanamurugesan]

What kind of anode and cathode is used in electrolysis

[pakwaterpk]

Nice work. have a question how can we separate high salts or reduce salts from water and make pure h2o through electrolysis ? Regards

[svgodytv]

Mam one question,
If we add salt to the water it turns brine solution right? then Chlorine gas is evolved right?

[qingdynastyinc]

What impact would using saltinated water to make hydrogen water?

[SuperVijayiyer]

Why need to add salt cant we use sea water directly?

[dragonarcher]

Hello I am curious about the left over water after all the oxygen and hydrogen is zapped out... What happens to the left over water

[RamKrishna-xxpn]

But how can hydrogen ion and oxygen ion be further converted into hydrogen and oxygen molecules ?

[TheAchievementAtlas-zvnv]

May I incorporate part of this video to illustrate the H2 production on a video related to H2 motor? is it copyright free>