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Hydrogen from the Ocean

New research offers a solution to extract hydrogen from seawater.

Hydrogen has the potential of playing a crucial role in the fight against climate change, as it offers a way of storing energy when renewables such as wind and solar are at overcapacity during evenings and summer weekends respectively. It also provides huge benefits when used for transportation and heating.


Using electricity to extract hydrogen, via electrolysis, requires water. Oceans represent the largest portion of available water in the planet and therefore, the ideal source of water to extract hydrogen, rather than using precious potable water. However, so far seawater was not really an option as the chloride present in the seawater salt would corrode the electrodes used in the process of electrolysis.


New research from Stanford University is now proposing a solution which involves coating the electrodes with chloride-repelling layers, thereby slowing down the decay of the underlying metal. The results from the study appear extremely promising as the proposed device matched current technologies, which currently use purified water.


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