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  2. Water splitting - Wikipedia

    en.wikipedia.org/wiki/Water_splitting

    Electrolysis of water is the decomposition of water (H 2 O) into oxygen (O 2) and hydrogen (H 2): [2] Water electrolysis ship Hydrogen Challenger. Production of hydrogen from water is energy intensive. Usually, the electricity consumed is more valuable than the hydrogen produced, so this method has not been widely used.

  3. Electrolysis of water - Wikipedia

    en.wikipedia.org/wiki/Electrolysis_of_water

    In pure water at the negatively charged cathode, a reduction reaction takes place, with electrons (e −) from the cathode being given to hydrogen cations to form hydrogen gas. At the positively charged anode, an oxidation reaction occurs, generating oxygen gas and giving electrons to the anode to complete the circuit.

  4. High-pressure electrolysis - Wikipedia

    en.wikipedia.org/wiki/High-pressure_electrolysis

    As the required compression power for water is less than that for hydrogen-gas the water is pumped up to a high-pressure, [5] in the other approach differential pressure is used. [6] There is also an importance for the electrolyser stacks to be able to accept a fluctuating electrical input, such as that found with renewable energy. [7]

  5. Why Hydrogen Fuel Is The Next Big Green Thing - AOL

    www.aol.com/news/why-hydrogen-fuel-next-big...

    As COVID-19 starts to take up less of the world's attention, the issue of climate change and green energy is growing. It's impossible to ignore the impact of fossil fuels and pollution on our ...

  6. Hydrogen evolution reaction - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_evolution_reaction

    Due to the abundance of water on Earth, hydrogen production poses a potentially scalable process for fuel generation. This is an alternative to steam methane reforming [5] for hydrogen production, which has significant greenhouse gas emissions, and as such scientists are looking to improve and scale up electrolysis processes that have fewer ...

  7. High-temperature electrolysis - Wikipedia

    en.wikipedia.org/wiki/High-temperature_electrolysis

    High-temperature electrolysis schema. Decarbonization of Economy via hydrogen produced from HTE. High-temperature electrolysis (also HTE or steam electrolysis, or HTSE) is a technology for producing hydrogen from water at high temperatures or other products, such as iron or carbon nanomaterials, as higher energy lowers needed electricity to split molecules and opens up new, potentially better ...

  8. Green hydrogen - Wikipedia

    en.wikipedia.org/wiki/Green_hydrogen

    Hydrogen can be produced from water by electrolysis.Electrolysis powered by renewable energy is carbon neutral.The business consortium Hydrogen Council said that, as of December 2023, manufacturers are preparing for a green hydrogen expansion by building out the electrolyzer pipeline by 35 percent to meet the needs of more than 1,400 announced projects.

  9. Biohydrogen - Wikipedia

    en.wikipedia.org/wiki/Biohydrogen

    Competitive drainage of electrons by oxygen in algal hydrogen production. Economics must reach competitive price to other sources of energy and the economics are dependent on several parameters. A major technical obstacle is the efficiency in converting solar energy into chemical energy stored in molecular hydrogen.

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