China unveils breakthrough carbon-14 nuclear battery capable of running for thousands of years
The ultra-efficient prototype requires less fuel than its predecessors, paving the way for decades of maintenance-free power in medical implants and aerospace gear.
In recent years, China has positioned itself at the forefront of the energy sector, driven by the development of cutting-edge technologies in renewables, electric vehicles, and nuclear power.
One of its most recent breakthroughs is a nuclear battery capable of powering small electronic devices for decades. This marks a major advancement over previous models and underscores China’s commitment to dominating this emerging technology.
A smaller, more efficient battery
The new model delivers a substantial boost in efficiency compared to its predecessors. It was designed by Northwest Normal University in Beijing in collaboration with a Chinese tech firm.
Measuring less than 1 cubic inch, the new battery generates more electricity while requiring up to 22% less nuclear fuel than previous versions.
Power for generations
The mechanism behind this type of battery relies on the natural decay of radioactive elements.
Over time, these materials continuously lose radioactivity through a process known as nuclear decay. The Chinese model utilizes carbon-14 as its fuel source, an isotope with a half-life of roughly 5,730 years.
This prolonged decay period paves the way for batteries with lifespans that far exceed current electrochemical batteries, which last only months or years. These nuclear models offer the potential for decades—or even centuries—of continuous electricity, though the overall lifespan remains limited by the more perishable components within the battery.
Limited applications
However, nuclear batteries are not currently designed to generate large amounts of power. The Chinese prototype generates just 1.13 microwatts—millions of times less than the energy required to power a smartphone or an electric vehicle.
Consequently, developers are targeting these batteries strictly for low-power devices that require a long, maintenance-free lifespan. Ideal applications include environmental sensors, scientific instruments, aerospace equipment, and certain medical implants.
Currently, this type of technology is already an integral part of aerospace engineering, powering deep-space probes like Voyager 1 and 2, as well as the Perseverance rover on Mars.
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