New battery converts nuclear waste into electricity using light emission
Researchers at Ohio State University have developed a battery that converts nuclear energy into electricity using light emission, Kazinform News Agency correspondent reports, citing Ohio State News.
This technology opens up new possibilities for recycling radioactive waste and developing alternative energy sources.
Nuclear power plants generate a significant share of the world's electricity while producing minimal greenhouse gas emissions. However, they also generate radioactive waste, which poses a serious environmental challenge due to the complexities of its disposal. This new development offers a way not only to safely manage nuclear waste but also to turn it into a valuable energy source.
How it works
The prototype battery, about four cubic centimeters small, combines scintillator crystals with solar cells. Scintillator crystals are high-density materials that emit light when they absorb radiation. The emitted light is then converted into electricity by the solar cells, enabling the system to generate power from ambient gamma radiation.
To test the battery, researchers used two radioactive isotopes—cesium-137 and cobalt-60—both of which are major fission byproducts of spent nuclear fuel. The experiments showed that with cesium-137, the battery produced 288 nanowatts, while the more powerful cobalt-60 increased the output to 1.5 microwatts. While this is not yet sufficient for household applications, it is enough to power miniature sensors.
Researchers note that with an optimized radiation source, the battery's power output could be scaled up to the watt level, significantly expanding its potential applications.
Safety and future prospects
Despite harnessing gamma radiation, the battery itself does not contain any radioactive materials, making it safe to handle and operate.
The study also found that the shape and size of the scintillator crystals significantly affect the battery's power output. A larger volume allows for greater radiation absorption, while an increased surface area enhances the efficiency of the solar cells.
The next phase of research will focus on scaling up the technology and improving its efficiency. However, mass production remains costly, and further studies are needed to assess the battery’s long-term viability and durability.
Earlier, Kazinform News Agency reported that the government of Kazakhstan officially confirmed the construction site for the country’s first nuclear power plant.
