HyperSolar has developed a fully integrated solar hydrogen (H2) device which will serve as the company’s first generation commercial renewable H2 generator.

The renewable H2 developer announced today that its current stability test of its proprietary fully integrated H2 production device has surpassed 294 hours without any degradation. The design of the device will serve as the foundation of the US-based company’s first generation commercial renewable H2 generator.

During April 2018 testing of the all-in-one, wireless solar- H2 device, HyperSolar observed more than 100 hours of stable operation under continuous simulated sunlight illumination, establishing what the company believes is a new international record for wireless self-contained solar hydrogen device. The device produced oxygen (O2) and H2 until part of the solar cell began to degrade after 105 hours.

“By utilising a new coating technique of the protective polymer layer that encapsulates the full device, we were able to surpass our April results and are much closer to our previously announced goals of 365 hours, and 1000 hours, of continuous stable operation,” said Dr. Joun Lee, HyperSolar’s Chief Technology Officer. “The recent results clearly indicate impressive hours of full device stability – over 294 hours and still going under peak sunlight with hydrogen production. We believe that even better results can be achieved by using commercial coating companies which can apply coatings even more uniformly and over a larger surface area.”

The company is continuing to focus on increasing long-term stability, which is critical for commercial adoption. Due to the low cost of a-Si solar cells, many H2 pioneers have attempted to use them in solar H2 systems, but have failed in achieving long-term stability in standalone solar powered water-splitting devices. Based on research and feedback from peers, HyperSolar believes that its results with a-Si cells are some of, if not, the most significant in the world.