Rubidium, a reactive metal element, plays a significant role in the energy field. Its unique physical and chemical properties enable it to have a wide range of applications in solar photovoltaic cells, magnetohydrodynamic power generation, thermionic conversion power generation, and ion thruster engines, etc.

(1) Photovoltaic Field

In solar photovoltaic cells, the incorporation of rubidium can effectively improve the conversion efficiency and stability of the cells, providing strong support for the development and utilization of renewable energy. Magnetohydrodynamic power generation technology takes advantage of the flow characteristics of rubidium in a magnetic field to achieve efficient electrical energy conversion, opening up a new path for the development of clean energy. Moreover, as a thermionic emission material, rubidium can significantly enhance the performance of thermionic generators, providing a new option for efficient energy conversion. In the field of space exploration, the rubidium ion thruster engine generates thrust through ion acceleration and directional movement, providing powerful power support for deep space exploration. Meanwhile, the incorporation of rubidium ions into perovskite solar cells can effectively improve the stability of the cells and extend their service life, further promoting the progress of solar cell technology.

(2) Field of New Materials

Rubidium also has a wide range of applications in the field of new materials. It can be used to manufacture high-performance alloys. For example, adding rubidium can enhance the hardness and corrosion resistance of alloys and improve their overall performance. In addition, rubidium is an important component of catalysts and can accelerate the progress of chemical reactions and improve the efficiency of reactions. Adding rubidium to cast aluminum alloys can significantly improve their mechanical properties, such as increasing strength, enhancing toughness and wear resistance, further expanding their application range.

(3) National Defense, Military, Aerospace and Aviation

Rubidium also plays an indispensable role in the fields of national defense, military, aerospace and aviation. For example, the rubidium atomic clock, with its high precision and stability, has become an important time reference in these fields. Its unique application value makes rubidium an indispensable part of these key fields.

(4) Biomedical Field

Rubidium also demonstrates its unique value in the biomedical field. Firstly, rubidium salts have been proven to have significant antidepressant effects, providing a new option for the treatment of neurological diseases such as depression. Secondly, it can also be used to treat goiter, showing its wide application in the medical field. In addition, rubidium salts, as antimanic agents and mood stabilizers, also play an important role in the treatment of mental diseases such as mania. Additionally, it is worth mentioning that the application of rubidium as a tracer in PET-CT imaging equipment can accurately assess the location and extent of coronary artery disease, providing strong support for medical diagnosis.

(5) Applications in Other Fields

Environmental Protection Field: Rubidium plays a key role in environmental protection applications such as flue gas desulfurization, helping to reduce the emissions of air pollutants.

Communication Field: As an additive in optical fibers, rubidium can improve the transmission performance and stability of optical fibers.