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Top Page > Hydrogen Energy > Products and technical services > Pure hydrogen fuel cell system「H2Rex™」

Pure hydrogen fuel cell system「H2Rex™」

  • Water is the only emission.
  • The hydrogen produced at P2G hydrogen production facilities is used at a site where it is needed.
  • The hydrogen generated as a by-product at factories is locally utilized.
  • Hydrogen is produced using surplus renewable energy and transported to and consumed in another town.
  • The hydrogen produced at a factory is utilized to heat water and generate electricity at a nearby hotel.
  • Toshiba is also developing fuel cells for mobility, including ocean vessels.

H2Rex™ is a clean generator that emits only water. The H2Rex™ pure hydrogen fuel cell system incorporates reliable technologies developed from decades of research conducted since the 1960s. H2Rex™ will contribute to the creation of a society where CO2-free hydrogen is widely used.

Produce Store Use

P2G hydrogen supply chains and H2Rex™ configuration

Once P2G hydrogen supply chains are established, the production and distribution of hydrogen will begin, making it possible to use hydrogen to generate electricity at various places. The use of hydrogen produced as a by-product at factories also helps increase the energy use efficiency.

The H2Rex™ pure hydrogen fuel cell system makes it possible to supply electricity when and where it is needed.

P2G hydrogen supply chains and H2Rex™ configuration

P2G hydrogen supply chain

The H2Rex™ pure hydrogen fuel cell system helps reduce CO2 emissions since it does not emit CO2 during power generation.

The H2Rex™ pure hydrogen fuel cell system makes it possible to supply electricity when and where it is needed.

Configuration of H2Rex™

Fuel cells generate electricity through electrochemical reactions between the stored hydrogen and atmospheric oxygen. The generated electricity and heat can be used as energy.

Schematic configuration and flow

Features of H2Rex™

●High energy efficiency

・Fuel utilization rate

In the H2Rex™ pure hydrogen fuel cell system, fuel cells are stacked in a cascade to substantially increase the hydrogen utilization rate.

Fuel utilization rate

・Total energy efficiency

Fuel cells generate electricity through electrochemical reactions between the stored hydrogen and atmospheric oxygen. Fuel cells provide high power generation efficiency with direct chemical reactions because, unlike conventional power generation facilities, they do not perform any conversion from thermal energy into kinetic energy. In addition, the heat generated by fuel cells during power generation can be captured by water or a heat exchanger and used by other facilities. Therefore, fuel cells provide extremely high total energy efficiency and can be used as distributed energy facilities.

Total energy efficiency

●High-durability fuel cell stack

Toshiba's unique fuel cell stack structure eliminates the need for an external humidifier. Instead, the cell stack is internally humidified and dehumidified automatically to keep it at the optimum humidity at which its performance is maintained. Because of this structure, Toshiba's fuel cells provide high durability and stability.

Fuel cell stack (latent heat cooling)

●Flexible operations

Typically, solid polymer fuel cells start working at a temperature of 60°C to 70°C. Since this is much lower than the operating temperature of other types of fuel cells, it is unnecessary to heat solid polymer fuel cells to generate electricity. Therefore, solid polymer fuel cells start working in minutes, making them suitable for daily start-stop (DSS) operations.

Start-up time

Their power output can be varied according to the load. In addition, solid polymer fuel cells are capable of tracking load changes because of their flexibility to change the output power. Therefore, they are suitable for energy generation applications to satisfy various requirements.

Load change tracking

Using H2Rex™

Various customers use H2Rex™ at markets, heated swimming pools, hotels, convenience stores, and elsewhere.

Various customers use H2Rex™ at markets, heated swimming pools, hotels, convenience stores, and elsewhere.

Example: The hydrogen produced at P2G hydrogen production facilities is used at a site where it is needed.

Example of initiative: PREFECTURAL AZUMA SPORTS PARK
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The hydrogen produced at P2G hydrogen production facilities is used at a site where it is needed.

Example: The hydrogen generated as a by-product at factories is locally utilized.

Example of initiative: Shunan wholesale market
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The hydrogen generated as a by-product at factories is locally utilized.

Example: Hydrogen is produced using surplus renewable energy and transported to and consumed in another town.

Example of initiative: Demonstration project for establishment of low-carbon hydrogen supply chain in Hokkaido
Clicking the link opens a new window.

Hydrogen is produced using surplus renewable energy and transported to and consumed in another town.

Example: The hydrogen produced at a factory is utilized to heat water and generate electricity at a nearby hotel.

Example of initiative: Showa Denko K.K. KAWASAKI KING SKYFRONT TOKYU REI HOTEL
Clicking the link opens a new window.

The hydrogen produced at a factory is utilized to heat water and generate electricity at a nearby hotel.

Example: Toshiba is also developing fuel cells for mobility 「H2Rex™-Mov」, including ocean vessels.

Example of initiative: Toshiba Delivers Mobile Hydrogen Fuel Cell System to Fuel Cell Ship
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Toshiba is also developing fuel cells for mobility「H2Rex™-Mov」, including ocean vessels.

For customers requiring detailed information about H2Rex™

Click here to download the H2Rex™ brochure.

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