Roadmap for Competitive Production of Solid‐State Batteries: How to Convert a Promise into Reality

Abstract This work describes the most logical approach to address the imminent scale up and mass industrial manufacturing of solid‐state batteries (SSBs) attending to material, product and production requirements. All the currently used technologies, starting from small lab scale and going to initial prototyping and industrial attempts, are evaluated against exclusion criteria focused on achieving a low‐cost, high throughput, reliable and easily scalable manufacturing process that is in addition environmentally friendly and minimizes risk related to human health and work safety. Batteries that rely on raw materials which are readily available and are ethically produced. Batteries that are manufactured using energy that leaves no carbon footprint and are efficiently reused and recycled, resulting in minimal impact on the earth’s resources and climate. Batteries that do not exist today but will certainly exist tomorrow. The resulting roadmap is used as the benchmark to compare the manufacturing strategies of the main industrial players attempting mass fabrication of SSBs in the next 5–10 years