High-Performance Swiss Batteries with Single Crystal Cathode Active Material Provided by eJoule, Wyon
eJoule Inc Delivers High-Performance Cathode Material to Wyon Swiss Batteries
Advances in portable medical devices, powered by high-capacity batteries, are transforming healthcare, making it more responsive, decentralized, and accessible. A significant step towards this goal was made in August 2025, with eJoule Inc fulfilling a multi-ton bulk order of its high-performance doped and coated single crystal cathode active material (eJoule®) to Wyon Swiss Batteries.
This cathode material, developed in close alignment with Wyon's stringent specifications, is tailored for their lithium-ion micro-battery systems designed for critical medical device applications such as implantable systems and portable medical electronics. The material's key attributes include exceptional safety, long cycle life, thermal stability, and biocompatibility, which are essential for such applications.
eJoule's proprietary Dynamic Crystallization Process (DCP®) produces single crystal cathode particles directly from solution phase droplets, allowing precise control over dopant composition and coating. This control is critical for high performance and consistent batch quality without traditional precursor use. The single crystal cathode material significantly contributes to the battery’s energy density, cycle life, and thermal performance, making it a valuable asset for medical devices requiring ultra-long cycle life and proven safety.
This partnership marks an important scale-up step for eJoule in supplying cathode materials specifically targeted at the medical battery market, reflecting their shared commitment to advancing safe, high-performance energy solutions for next-generation healthcare technologies. Wyon Swiss Batteries utilize this cathode material in their proprietary lithium-ion micro-batteries, known for their precision craftsmanship, reliability, and biocompatibility, powering critical systems like implants and hearing devices.
In summary, eJoule’s single crystal cathode active material is now being delivered in bulk quantities to Wyon Swiss Batteries, supporting their manufacture of high-quality lithium-ion micro-batteries for medical device applications, a sector that demands exceptional battery safety, longevity, and reliability. This delivery marks another important step in eJoule's efforts to meet the world-class specifications and performance standards demanded by Wyon for their proprietary lithium-ion batteries used in medical applications.
Philipp Wyser, CEO of Wyon AG, stated that eJoule's cathode material meets the world-class specifications and performance standards that Wyon demands for its proprietary lithium-ion batteries used in medical applications. Liang Chen, Ph.D., CEO of eJoule Inc, stated that their proprietary process eliminates the need for traditional precursors by producing single crystal cathode particles directly from solution phase droplets. The central role of the cathode in determining energy density, cycle life, and thermal performance is emphasized. eJoule's DCP, Dynamic Crystallization Process, is a closed loop, modular, and scalable method for producing cathode powder in one thermal step.
This partnership between eJoule and Wyon Swiss Batteries represents a step forward in merging advanced materials engineering with the precision demands of the medical device industry.
The collaboration between eJoule Inc and Wyon Swiss Batteries signifies the intersection of science and technology, as they work together to deliver high-performance cathode materials for health-and-wellness applications, specifically in the development of portable medical devices. The exceptional safety, long cycle life, thermal stability, and biocompatibility of eJoule's cathode material contribute to the advancement of technology in healthcare.
