Sea-Nergy: Hydrogen from seawater

Sea-Nergy: Hydrogen from seawater

Western-Australian firm Sea-Nergy has devised a way to generate hydrogen from seawater and renewable energy.

For more than 10 years the company has been working towards its objective of developing a renewable, sustainable and abundant source of green hydrogen in a cost-effective manner.

With hydrogen rapidly emerging as the new energy carrier of the future, Sea-Nergy has developed a patented method which it says produces renewable, sustainable hydrogen from seawater.

The company’s method has been tested and confirmed by a government approved independent laboratory in Western Australia, and all of Sea-Nergy’s findings and the method have been filled as a PCT Patent. Sea-Nergy has now been granted an official Australian Patent for its invention.

Sea-Nergy told H2 View this is a “world first” alternative method to using fossil fuels and drinking water.

© Sea-Nergy

“Globally most hydrogen is currently manufactured with the use of fossil fuels, and the gasification of coal and LNG as the dominant methods,” the company said.

“Unfortunately, these fossil fuel-based productions have many environmental impacts including carbon dioxide production in vast quantities and other environmentally unfriendly wastes.”

“Some within the hydrogen industry are attempting to address the CO2 production by researching ways to store the gas and this has become known as carbon capture and storage (CCS). However, the technology is in its infancy and has many obstacles to overcome before being commercially and environmentally viable.”

“The green alternative being proposed at the moment is spitting the water molecule into hydrogen and oxygen.”

“This has long been a known source of green hydrogen however here again we see many obstacles, including the use of a valuable resource, water, and there are many countries concerned about water resource levels, including Australia.”

Sea-Nergy said in order to achieve a decarbonised energy future, a new technology is required, and the company believes they have achieved this with its new method.

“Using seawater eliminates the use of valuable drinking water stocks whilst presenting a very cost-effective feedstock,” the company said.

“Without the need to desalinate prior to electrolysing eliminates another hefty cost. In fact, Sea-Nergy has a developed a process that actually assists in the desalination of seawater.

“Our method has the potential for multiple hydrogen extraction points using the original feedstock. Again, this is a world first and presents a clear cost advantage over all known hydrogen production methods.”

Sea-Nergy said its process is approximately 50% more energy efficient than water splitting with most commercial electrolysers, requiring around 2V to operate. The company’s breakthrough method can operate around 1V.

“Our end to end process captures and stores carbon dioxide, therefore Sea-Nergy’s process is actually carbon negative,” the company continued.

“The value proposition from this breakthrough cannot be understated from an environmental point of view and capital and production cost minimisation.”

“Our cost to produce 1kg of hydrogen is estimated to be under all known production methods due to the nature of our feedstocks and multiple extraction opportunities.”

Sea-Nergy is now seeking strategic partners to assist in its commercialisation pathways.


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