Highlights

  • Firebird lifts precursor tap density to 1.35 g/cm³.
  • Process optimisation reduces sulphur content by approximately 46%.
  • The team reports consistent key indicators across three batches.
  • Firebird proposes larger-scale replication at its Perth demonstration plant.

Firebird Metals (ASX:FRB), which is developing manganese chemicals and advanced battery materials, has improved the quality of its lithium-manganese-rich precursor. Work at its Hunan research facility in China increased powder density and reduced sulphur contamination, moving the program towards cathode synthesis and testing. The results concern precursor characteristics, with finished battery performance and commercial application still requiring further work.

Denser Powder Leads the Results

The optimised precursor achieved tap density of 1.35 g/cm³, 35% above Firebird's previously reported result and 11% above a commercial reference. Tap density measures how much powder packs into a defined volume.

Improved packing may allow more active material within the same electrode volume, provided electrochemical performance is maintained. If the improvement translates into higher finished electrode density, the same capacity may be achieved with a thinner coating. The current precursor measurements do not establish those downstream outcomes.

Washing Changes Reduce Impurities

The team refined co-precipitation and washing conditions to improve particle formation and impurity control. The process feeds nickel and manganese salt solutions, ammonia and an alkaline solution into a controlled reaction system before ageing, separation, washing and drying.

Sulphur fell by approximately 46% to 610 parts per million, while sodium measured 160 parts per million. The median particle size was 4.193 micrometres, with a particle-size span of 0.742. Microscopy showed predominantly rounded secondary particles with structured surfaces, supporting the reported improvement in particle formation.

The reported powder also recorded a surface area of 18.1 square metres per gram. Its particle-size measurements ranged from a D10 of 2.911 micrometres to a D90 of 6.022 micrometres, adding detail to the material characterisation.

Repeatability Remains a Focus

Firebird reports consistent key performance indicators across three batches. However, the detailed independent results relate to one sample and do not independently establish performance across all three batches. Further validation forms part of the development pathway.

The work also reinforces the importance of feedstock purity and impurity management. Firebird's ultra-high-purity manganese sulphate capability could complement precursor production, but controlled comparative trials are required to establish how particular purity levels affect precursor characteristics and cathode performance. The results do not establish a direct causal relationship between a specified feedstock purity and the improvements.

Perth Replication Sets the Next Stage

Firebird proposes replicating the process at its Australian Demonstration Plant in Perth. That work would assess production consistency, reagent efficiency, material yields and quality at larger scale, supporting later customer qualification activities.

The proposed sequence begins with additional batch validation, lithiation and calcination trials, followed by assessment of cathode structure and electrochemical performance. Larger-scale demonstration would then examine operating requirements and process economics. Customer qualification and project-specific evaluation of product specifications, scale-up needs and commercial arrangements would follow. Further development is required before commercial application can be established; the announcement reports progress in precursor development rather than completed commercial qualification.