en.Wedoany.com Reported - Critical Resources Ltd (ASX:CRR, FRA:9S70) has achieved a manufacturing milestone in its solid-state battery evaluation project. The company demonstrated the ability to deposit a complete cathode, solid electrolyte, and conductive network in a single dry process step.

This work utilized Dynamic Spray Deposition (DSD) technology and was completed as part of a research project at the U.S. National Science Foundation-supported Centre for Solid-State Electric Power Storage at the South Dakota School of Mines & Technology.

DSD technology involves applying materials through a nozzle at supersonic speeds, allowing the company to control the process like "3D printing battery layers." The latest work demonstrated cathode and electrolyte matrices, including cathode materials and LLZO (lithium lanthanum zirconium oxide). The process uses no solvents or binders, and eliminates the need for furnaces and presses, thereby removing multiple steps typically involved in manufacturing liquid electrolyte or solid-state batteries.

Tim Wither, Managing Director of the company, stated that the DSD process addresses the key challenge of manufacturing complexity in scaling solid-state battery technology from the lab. Wither also highlighted progress at the cathode-electrolyte interface, which he considers a significant technical challenge.

Critical Resources Ltd is researching two non-sulfide electrolytes—an AC electrolyte and a high-temperature electrolyte. Previous tests have shown that the AC electrolyte exhibits high ionic conductivity competitive with sulfide-based alternatives. The company's next goal is to transition from coin cells to full-size power batteries, and it expects to update the market on progress soon.

Further milestones will involve transferring the DSD process from LLZO (considered a readily available reference material) to the AC and high-temperature electrolytes the company is developing. Wither described this as a "truly key milestone." He noted that there has "already been significant interest in potential partnerships" and believes solid-state batteries represent the next generation of battery technology due to their ability to deliver more energy at a lighter weight and eliminate liquid electrolytes.

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