World’s first 18650 Potassium-ion battery debuts, can replace lithium cells

In a noteworthy advancement, Group1 has launched the world’s first Potassium-ion battery that has been designed within the widely utilized 18650 cylindrical form factor.

“We are excited to introduce the world’s first 18650 Potassium-ion battery,” stated Alexander Girau, Chief Executive Officer of Group1.

An 18650 potassium-ion battery represents a category of rechargeable batteries that employs potassium ions as the charge carrier, in contrast to the more prevalent lithium ions.

This type of battery possesses the same form factor as the commonly utilized 18650 lithium-ion battery, with a diameter of 18 mm and a length of 65 mm.

This advancement, unveiled at the 14th annual Beyond Lithium Conference, has the potential to usher in a new epoch of sustainable and economically viable substitutes for conventional lithium-ion batteries.

Impressive performance

“This innovation represents years of dedicated research and product development,” stated Girau.

A particularly noteworthy feature of the newly developed Potassium-ion battery is its impressive performance. Extensive testing has demonstrated that it not only fulfils but surpasses preliminary expectations.

The battery exhibited outstanding cycle longevity, indicating its ability to endure numerous charging and discharging cycles prior to a notable decline in capacity.

This feature is vital for various applications, including electric vehicles, wherein the longevity of the battery is critically significant.

Furthermore, the Potassium-ion battery exhibits robust discharge performance, ensuring its capacity to deliver power effectively when necessary.

High energy density

The battery operates at a nominal voltage of 3.7V, thus guaranteeing compatibility with contemporary electronic devices and systems.

Moreover, it has exhibited a clear trajectory toward achieving a gravimetric energy density of 160-180Wh/kg, which is on par with lithium iron phosphate lithium-ion batteries (LFP-LIB).

This high energy density indicates that the battery is capable of storing a substantial quantity of energy in relation to its mass. It offers “superior cycle life and excellent discharge capability,” stated the company.

This establishes the Potassium-ion battery as a suitable alternative for high-performance mobility applications, such as electric vehicles and portable electronic devices.

Strategic designing

Interesting is the fact that the decision to encase the Potassium-ion battery in the 18650 format represents a strategic decision.

As the most widely used and designed cell format, the 18650 ensures the Potassium-ion battery can seamlessly integrate into existing devices and applications, eliminating the need for costly redesigns.

“It seamlessly integrates into existing LIB processes, ensuring a smooth transition for manufacturers,” reads the press release.

Additionally, the novel Potassium-ion batteries employ commonly accessible commercial components, including graphite anodes, separators, and electrolyte formulations.

This not only streamlines the supply chain but also bolsters domestic manufacturing capacities, thereby decreasing dependence on essential minerals like nickel, cobalt, copper, and lithium.

A paradigm shift

The newly launched Potassium-ion battery, utilizing Group1’s exclusive Kristonite cathode material, denotes a substantial progression in the field of battery technology

It can be a compelling substitute for both lithium-ion batteries based on LiFePO4 (LFP) and sodium-ion batteries (NIBs), which have encountered difficulties related to cost and effectiveness.

The introduction of the 18650 Potassium-ion battery by Group1 signifies a notable advancement in the evolution of sustainable and efficient energy storage technologies.

It removes the requirement for essential minerals, utilizes widely accessible elements, and presents it in a format that is globally recognized.

The 18650 Potassium-ion battery could be a transformative change that has the potential to redefine various industries and promote a more sustainable environment.