Abstract Borophene is an emerging two‐dimensional (2D) material. Since significant breakthroughs were achieved in the experimental synthesis of borophene, the exploration and development of borophene‐based devices across diverse fields have become a major research focus. However, borophene still faces critical bottlenecks, including insufficient environmental stability, limited controllability in large‐area preparation, and challenges in achieving consistent integration. To enhance material availability and device performance, well‐established performance enhancement strategies for 2D materials, such as defect engineering and doping engineering, have been introduced into the borophene system, thereby progressively extending its application boundaries in complex sensing scenarios. A wide range of high‐performance sensors based on boron‐based two‐dimensional materials have been proposed. In particular, for complex detection targets such as gas, humidity, and pressure, boron‐based sensors have demonstrated highly promising solutions. This review centers on the theoretical development and synthesis technologies of borophene, systematically summarizes common performance enhancement strategies for two‐dimensional materials, and highlights recent advances in borophene for gas, humidity, and pressure sensing. Moreover, it discusses the core bottlenecks that hinder the practical application of borophene‐based sensors, including material environmental stability and controllable preparation, device uniformity and integrated packaging, interference from complex matrices and cross‐sensitivity, as well as the lack of standardized testing protocols and comparable evaluation systems. Finally, in light of the current research status, we provide perspectives and discussions on the optimization of borophene material preparation, the advancement of performance enhancement strategies for two‐dimensional materials, the construction and optimization of sensor devices, and the further improvement and expansion of material functionalities.
Yuan et al. (Tue,) studied this question.