UK Scientists Develop World’s First Carbon-14 Diamond Battery

Scientists and engineers from the UK Atomic Energy Authority (UKAEA) and the University of Bristol have developed the world’s first carbon-14 diamond battery, an innovative energy source capable of powering devices for thousands of years.

This breakthrough battery utilises the radioactive isotope carbon-14, commonly associated with radiocarbon dating, to produce energy within a diamond structure. Its potential applications are wide-ranging and transformative.

Bio-compatible diamond batteries could revolutionise medical devices, such as ocular implants, hearing aids, and pacemakers, by reducing the need for replacements and patient distress.

💎Scientists and engineers from the UK Atomic Energy Authority (@UKAEAofficial) and the University of Bristol (@BristolUni) have successfully created the world’s first carbon-14 diamond battery.

This new type of battery has the potential to power devices for thousands of years,… pic.twitter.com/Kquxpn1PHA

— UK Atomic Energy Authority (@UKAEAofficial) December 4, 2024

In addition, the batteries are ideal for extreme environments on Earth and in space, where conventional battery replacement is impractical. They could power active radio frequency (RF) tags for tracking devices, spacecraft, or payloads, offering decades of operational life while reducing costs.

“Diamond batteries offer a safe, sustainable way to provide continuous microwatt power. They use a manufactured diamond to safely encase small amounts of carbon-14,” explained Sarah Clark, Director of Tritium Fuel Cycle at UKAEA.

The carbon-14 diamond battery operates by capturing fast-moving electrons generated from the radioactive decay of carbon-14, which has a half-life of 5,700 years. This process is akin to how solar panels convert light into electricity, but instead of photons, the diamond structure harnesses electrons.

Professor Tom Scott, a materials expert at the University of Bristol, highlighted the versatility of the technology: “Our micropower innovation supports applications ranging from space technologies and security devices to medical implants. We are eager to explore these possibilities with industry and research partners.”

The battery was developed using a plasma deposition rig designed to grow the diamond at UKAEA’s Culham Campus. This achievement builds on UKAEA’s expertise in fusion energy research, which is driving advancements in related technologies.