Scientists at The University of Manchester have unveiled a hydrogen sensor that could be a game-changer for the transition to cleaner energy. As the world shifts away from fossil fuels, hydrogen is emerging as a key player in the future of sustainable power. But while hydrogen holds massive potential, its clear, odourless and highly flammable nature makes it a challenge to detect and safely use.
This new sensor, developed in collaboration with the King Abdullah University of Science and Technology (KAUST) in Saudi Arabia, promises to change that. Small, affordable and energy-efficient, it can reliably detect even the smallest amounts of hydrogen within seconds. It’s a major step forward, outpacing existing portable commercial detectors in both speed and precision.
Professor Thomas Anthopoulos, from The University of Manchester, said: “This sensor could offer a breakthrough in hydrogen safety technology. By combining affordability, reliability and high performance, it has the potential to transform how we handle hydrogen across industries, homes and transportation. I hope our organic sensor will help build trust in emerging hydrogen technologies, making them more accessible and safer for everyone.”
The sensor works using a process called “p-doping,” where oxygen molecules increase positive electrical charges in the active material. When hydrogen is present, it reacts with the oxygen, reversing the effect and causing a rapid drop in electrical current. This change is swift and reversible at room temperature up to 120°C, making it ideal for real-world applications.
The sensor has already been tested in several practical scenarios, from detecting pipe leaks to monitoring hydrogen diffusion in enclosed rooms. The results were impressive—faster than current commercial detectors and showing potential for use in homes, industry and transport networks.
With its ultra-thin, flexible design, the sensor could also be integrated into smart devices for continuous, real-time hydrogen monitoring. The team is now focused on further development and assessing the sensor’s long-term stability.
