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If you ask the leaders at Hyzon what kind of company it is, the answer might surprise you. The business, which manufactures “high-performance hydrogen fuel cell systems,” doesn’t consider itself just a manufacturer.  
 
Making things possible: “We are a clean technology company that makes it possible to provide emissions-free power to some of the most difficult applications out there,” said Chief Operating Officer Dr. Bappaditya Banerjee. “It just so happens we are starting with Class 8 and refuse trucks.”

• In September, the Bolingbrook, Illinois–based firm announced the start of production of its single-stack, 200-kilowatt fuel cell systems to power those heavy-duty hydrogen fuel cell trucks. Hyzon is the only U.S. producer of the single-stack 200-kilowatt fuel cell.
• The new system is an upgrade from the 110-kilowatt fuel cell assemblies that Hyzon used in its first-generation vehicles. 
• “If we were to put together two 110-kilowatt fuel cells to get to 200 kilowatts, the single-stack system would be 30% lighter than two 110-kilowatt systems, as well as 25% cheaper to produce,” Banerjee said.

A differentiator: The company aimed to scale up the power of the engine without also significantly scaling up the size—no easy task. So Hyzon developed a proprietary solution: its hybrid bi-polar plate technology.

• “Most [fuel cell] stacks are either metal or carbon, but ours are hybrid,” Banerjee explained. “By hybrid, we mean that the cathode—where the oxygen comes into the system—is carbon, while the anode side is metal. The carbon side is more corrosion resistant while the metal side is strong, rigid and easier to manufacture, which allows a compact design.”

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