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ABOUT SUPERCRITICAL

Discover the team behind the world’s first high-pressure, efficient electrolyser for the production of hydrogen energy.

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No individual will solve the climate crisis.

We embrace partnerships and collaboration within our team and externally. We believe that bringing brilliant minds together in an innovation conducive environment will catalyse the world’s path to net zero.

A culture built on transparency and trust across the team is the foundation for accelerated problem solving.

Scientist working in the lab

No one has ever done what we’re doing.

We bring together impassioned individuals from all sorts of diverse backgrounds, disciplines and industries to enable us to think differently and challenge one another. Progress is never linear. When you’re developing something completely novel, things will not always go to plan.

We cannot fail so long as we learn and take that learning forward to our next attempt. We embrace the challenges and we celebrate success.

We’re thinkers.

We’re enablers.

We’re problem solvers.

We’re Supercritical.

We are on a mission to create pioneering hydrogen technology that enables industry to transition beyond fossil fuels.

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CAREERS AT SUPERCRITICAL

Our open positions

Is it time to make the leap? We’re looking for brilliant and passionate people to join us!

Technology PARTNERS

See the Technology Partnerships that we have. The partnerships that extend our team far more widely than Supercritical’s four walls!

supercritical's press kit

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EXTENDED FAQs

Explore the world of Supercritical, clean hydrogen production and how it can help create a more sustainable world.

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What is Supercritical's technology, and how does it work?

Supercritical electrolysers are a new class of electrolyser, not an enhancement to any other.

They operate at high pressure and intermediate temperatures, delivering high pressure, high purity gases at ambient temperatures.  It has been demonstrated to operate at >99% electrolysis efficiency in the cell with industrial metal catalysts and further improvements are expected with completion of Supercritical’s catalyst optimisation programme.

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Why is Current Density important?

The current density can be thought of as the hydrogen production rate for a given amount of electrode material.  The higher the current density, the more hydrogen you can produce.  

If an electrolyser is able to operate at high current density, it translates to smaller equipment for a given output level and a reduced cost per kW/kg.

Technologies such as Supercritical and PEM are able to operate over a wide dynamic range, changing from ultra-high efficiency at lower current density to high efficiency at high current density.  This flexibility means installations have a wider range of applications.

Low current density solutions require larger electrolysers (space and cost implications) and typically have a narrow operating range, limiting their applications.

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What is the water input quality requirement for the Supercritical electrolyser?

Currently, the input water quality requirements are the same as PEM electrolysers. Given the novelty of the technology, exact boundaries are not yet drawn. Supercritical is exploring other water qualities to assess the effect on performance and durability.

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What drives the cost of green hydrogen?

The factors that drive the production cost of green hydrogen in significance

  1. The cost of the renewable energy for the electrolyser (this is at least 50% of the cost per kg of H2)
  2. The efficiency of the electrolyser (tied to the above… more efficient electrolysers need less renewable energy)
  3. Cost of the electrolyser (roughly 20-30% of the cost per kg)
    - High Current density solutions reduce the cost per kg/kW
    - Lifetime of the electrolyser - an electrolyser that lasts twice as long can cost twice as much to be neutral!
    - Eliminating upstream/downstream equipment (such as gas compressors) should be factored in, including maintenance savings
    - Low ‘Capacity Factor’ installations are more capex sensitive
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What is Capacity Factor?

Capacity Factor is a term used to represent the average usage, based on the maximum available, over a period of time. It is expressed as a % of the maximum capacity.

For example, solar renewable energy has a low capacity factor as they peak around the middle of the day and there are shorter days with sunlight in the winter.  Depending on the system deployed and geography, solar capacity factor is typically 15-30%.  Peaking at up to 100% in the middle of a summer day but 0% at night.

Onshore wind  has a typical capacity factor between 25% to 45% with offshore farms often benefiting from stronger and more consistent wind resources, resulting in average capacity factors that can exceed 50% in favourable locations.

You can combine Solar and Wind renewable energy technologies, as they are typically quite complementary and can increase your capacity factor by 5-10%.

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