Detection of Hydrogen Dissolved in Liquid Media: A Review and Outlook

As hydrogen continues to become rather promising for the generation of clean and sustainable energy, effective low‐cost sensors are progressively necessary ensure safety efficiency H‐based energy processes. Although a wide variety gas phase is available, there still lack devices detect, measure, track dissolved hydrogen. Determining its concentration environmentally, economically, phenomenologically relevant applications such as offshore transport pipelines, anaerobic reactors, even in electrical transformers. Herein, technologies sensing liquid media compiled reviewed, providing debrief on their operation mechanisms, applications, features, well an outlook field be explored with new functional materials applied it.