Scientists from the University of Bristol and the UK Atomic Energy Authority (UKAEA) have successfully developed the world’s first carbon-14 diamond battery.
This revolutionary energy source has the potential to power devices for thousands of years, offering a sustainable and efficient solution for a wide range of applications.
How the carbon-14 diamond battery works
The carbon-14 diamond battery leverages the radioactive decay of carbon-14, a radioactive isotope commonly used in radiocarbon dating, to generate electricity. Encased in a diamond, which is one of the hardest materials known, the battery safely captures radiation to produce power.
Carbon-14 emits short-range radiation, which is absorbed by the diamond casing, ensuring safety while generating low levels of electricity. The battery operates similarly to solar panels, but instead of converting light into electricity, it uses fast-moving electrons from radioactive decay.
The result is a long-lasting, reliable power source with an impressive lifespan. Since carbon-14 has a half-life of 5,700 years, the battery will retain half of its power even after thousands of years.
Sarah Clark, Director of Tritium Fuel Cycle at UKAEA, emphasized the sustainability and safety of this innovation, saying, “Diamond batteries offer a safe, sustainable way to provide continuous microwatt levels of power. They are an emerging technology that uses a manufactured diamond to safely encase small amounts of carbon-14.”
Versatile applications in medicine, space, and beyond
One of the most promising aspects of carbon-14 diamond batteries is their versatility. These batteries can be used in a variety of environments and devices where conventional power sources are impractical.
The bio-compatible diamond battery could revolutionize healthcare by powering implants such as pacemakers, hearing aids, and ocular devices. Unlike traditional batteries, which need frequent replacements, the diamond battery could last for decades, reducing patient discomfort and surgical risks.
Moreover, these batteries are ideal for space missions and remote Earth locations. They could power spacecraft, satellites, and even radio frequency (RF) tags for decades, reducing costs and extending operational lifespans.
“Our micropower technology can support a whole range of important applications from space technologies and security devices to medical implants. We’re excited to explore these possibilities with partners in industry and research,” said Professor Tom Scott from the University of Bristol highlighting the battery’s potential.
A sustainable solution to nuclear waste
The carbon-14 used in these batteries is extracted from graphite blocks, a byproduct of nuclear fission reactors. By repurposing this radioactive material, the technology reduces nuclear waste while creating a valuable energy source. The UK alone holds nearly 95,000 tonnes of graphite blocks.
The process involves using a plasma deposition rig, a specialized device developed by the collaborative team from UKAEA and the University of Bristol, to grow the diamond structure.
Not only does this approach provide a practical use for radioactive waste, but it also reduces the cost and challenges of safe storage.
Safe, sustainable, and revolutionary
The carbon-14 diamond battery is not only a technological marvel but also a safe energy solution. Its short-range radiation is fully absorbed by the diamond casing, ensuring no harmful emissions. Even if disposal is necessary, the battery can be returned to the manufacturer for safe recycling.
By combining fusion research expertise and innovative engineering, this groundbreaking development promises to reshape the future of energy. Whether powering medical devices, spacecraft, or remote sensors, carbon-14 diamond batteries offer a glimpse into a sustainable and efficient future.