Advances and Outlook of Boron–Hydrogen Containing Materials for Potential Clean Energy Applications: A Review

Hydrogen energy has characteristics of pollution-free, high energy density, utilized in many forms, which is considered to be the ideal energy to replace traditional fossil energy and the ultimate energy source for human beings. However, how to store it efficiently and safely remains a challenging problem, which limits its large-scale application. The high hydrogen storage density and excellent thermodynamic stability of boron–hydrogen materials make them advantageous in storing hydrogen energy, which provides a good solution to hydrogen storage issues. In addition, boron–hydrogen materials have other potential applications in clean energy fields, and these applications have not been summarized systematically. Therefore, this Review summarizes the research progress of boron–hydrogen materials in storing hydrogen energy, producing hydrogen, acting as a reductant, rocket fuel, and fuel cells. The research progress and the problems faced in the large-scale application of boron–hydrogen materials and future solutions are analyzed. The Review provides valuable insights and references for the potential application research of boron–hydrogen materials.