Critical Resources makes solid-state battery breakthrough

Critical Resources (ASX:CRR) has made a breakthrough in its development of a technology that may be able to overcome some of the biggest issues facing the solid state energy storage system.

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Lab validation results from Critical’s amorphous solid-state electrolyte program have achieved interface stability sustained over 1,200 hours at room‐temperature, which the company says has confirmed ectrochemical durability and addressed key solid‐state battery chemistry challenges.

Solid-state batteries are widely recognised as a next-gen energy storage solution; however, electrolyte instability remains a key barrier to commercialisation.

The electrochemical durability helps address key solid‐state battery chemistry challenges and complements the company’s dry supersonic deposition (DSD) program, reinforcing an integrated strategic approach to reduce both materials and manufacturing risk.

MD, Tim Wither, said the outcomes address several of the most persistent technical failure modes that have constrained solid-state battery development, particularly electrolyte instability and interface degradation.

“This first step in our lithium-ion solid-state electrolyte (ASE) validation program advances our integrated battery strategy by addressing several of the key technical failure modes from chemical design that have constrained solid-state battery development,” he said.

“Demonstrating room-temperature electrolyte performance alongside sustained lithium-metal interface stability for more than 1,200 hours under controlled laboratory conditions materially reduces early-stage interface-related risk – one of the most challenging aspects of solid-state battery development.

“Importantly, this work complements our solvent-free Dry Supersonic Deposition program, reinforcing an integrated approach that addresses both materials performance and manufacturing complexity.”

The Critical MD added: “While this work remains at an early laboratory stage, the results indicate the program is progressing in the right direction and strengthen the technical foundation of our battery strategy.”

The laboratory validation results from the ASE program were delivered in collaboration with the South Dakota School of Mines & Technology within the American National Science Foundation (NSF) supported centre for solid-state electric power storage (CEPS) evaluation framework.

During the next stage, controlled cathode–electrolyte interface trials aligned with DSD- fabricated cathode architectures will be undertaken.

This will connect the ASE and DSD workstreams into a unified solid- state cell evaluation pathway during the evaluation period with SDM.

CRR is up +12.5%, to 0.9cps today.

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