Calcium Organic BatteRy Alliance - COBRA

Project summary

Low-cost, abundant raw materials and high energy are the key requirements for future battery technology supporting the realization of the European Green Deal. The current lithium-ion battery technology raises long-term concerns due to dependence on scarce metals and materials. There are many alternatives envisioned, often with their challenges proportional to their promises. Calcium battery is an alternative with extremely promising energy, power, and in particular environmental and sustainability metrics. Yet, this Holy Grail remains hard to attain given the complex nature of Ca behavior in a battery. COBRA’s objective is to make this a reality by developing CRM-free, high-energy density, rechargeable calcium metal-organic batteries reaching 350 Wh/kg at cell level. The application intended is residential mid- to large-scale energy storage, needed to ensure flexibility and security of the electrical grid, but also potentially appealing to electric transportation in the long term.