Researchers can now pull hydrogen directly from seawater with no filtering required

Researchers at the University of Adelaide successfully split hydrogen and oxygen from seawater, offering new hope for cheaper and more accessible renewable energy for coastal regions. The researchers were able to make clean hydrogen fuel from seawater without pre-treatment. As the world continues to pivot away from fossil fuels demand for hydrogen fuel is expected to increase in the coming years.

“We have split natural seawater into oxygen and hydrogen with nearly 100 percent efficiency, to produce green hydrogen by electrolysis, using a non-precious and cheap catalyst in a commercial electrolyser,” said Professor Shizhang Qiao, the team’s co-lead. Seawater typically needs to be purified before electrolysis splits it into hydrogen and oxygen. The team says its results, using cobalt oxide with chromium oxide on its surface as the catalyst, had similar performance to a standard process of applying platinum and iridium catalysts to highly purified and deionized water.

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