Hydrogen Sensors Using 2‐Dimensional Materials: A Review
Thi Kieu Ngan Pham, Joseph J. Brown
Abstract
Abstract Widespread application of hydrogen for energy storage, manufacturing processes, medical treatment, and other uses has motivated development in hydrogen sensing technology for safety and control. Hydrogen sensors have been well studied and commercialized yet face increasing demand for lower cost, broader operating conditions, and especially smaller scale. Two‐dimensional (2D) materials have gained prominence due to atom‐scale thicknesses and special structure which give rise to unique electrical and mechanical properties in combination with the potential for submicron miniaturization of sensing devices. These characteristics pose a high potential for gas detection in general and for hydrogen detection in particular. This paper reviews hydrogen sensors utilizing 2D materials in order to provide insight into current sensing technologies and opportunities for future hydrogen detection devices.