Atomic Energy Battery Poised To Make EV Charging A Thing Off The Past?

Beijing Betavolt New Energy Technology Co. Ltd. unveiled its breakthrough achievement – a miniature atomic energy battery. This groundbreaking product integrates nickel-63 nuclear isotope decay technology with China's pioneering fourth-generation diamond semiconductor module.

Betavolt's atomic energy batteries promises a stable and autonomous electricity generation for 50 years without the need for charging or maintenance. The development, which is still in the pilot stage, is set to enter mass production for various applications, including automotive, aerospace, AI equipment, medical devices and more.

Atomic energy batteries, also known as nuclear or radioisotope batteries, harnesses energy released from nuclear isotope decay and converts it into electrical energy through semiconductor converters. The United States and the Soviet Union has been focused on this high-tech field since the 1960s, however it was primarily limited to large scale aerospace and military applications.

Betavolt's achievement marks a shift towards miniaturisation, modularization, and civilian use, aligning with global trends and China's development goals outlined in the "14th Five-Year Plan and 2035 Vision Goals." This goal would make perfect sense in the electric vehicle (EV) space as China pushes to become the global leader in EV exports.

Betavolt's nuclear batteries take a unique approach, utilising beta particles (electrons) emitted by the radioactive source nickel-63 for electric current generation. The key lies in a 10-micron-thick single-crystal diamond semiconductor, with a 2-micron-thick nickel-63 sheet placed between two diamond semiconductor converters.

These modular nuclear batteries can be combined in series and parallel configurations, offering flexibility in size and capacity.

Zhang Wei, Chairman and CEO of Betavolt, revealed that the first mass-produced product, BV100, is the world's first nuclear battery with a power of 100 microwatts, 3-volt voltage, and a volume smaller than a coin. These batteries, generating 8.64 joules per day and 3,153 joules per year, have the potential to revolutionise power sources for devices like mobile phones and drones.

Betavolt's atomic energy batteries differ from electrochemical batteries, boasting an energy density over ten times that of ternary lithium batteries. With a storage capacity of 3,300 megawatt-hours in a 1-gram battery, they are resistant to fire or explosion, even under extreme conditions like acupuncture or gunshots.

The batteries operate in a stable manner within a broad temperature range (-60 to 120 degrees Celsius) and have no self-discharge. Furthermore it emit no external radiation and after the decay period, the nickel-63 isotope transforms into a stable, non-radioactive copper isotope, thus making it safer than traditional chemical batteries.