Hazer Group (ASX:HZR) has delivered positive results from ongoing laboratory test work from the synthetic graphite it can produce, which continues to deliver high performance in half-cell lithium-ion batteries.
Hazer’s non-optimised graphite exhibited the performance over 50 to 100 cycles and across the different charge and discharge rates, with virtually no loss in capacity.
The results provide key battery performance indicators and characteristics critical to advancing the ongoing test work underway in collaboration with the University of Sydney.
The company’s Hazer Process Hazer takes two readily available feedstocks in natural gas and iron ore and converts them into two high demand products in hydrogen and synthetic graphite.
During the process, the carbon content of the natural gas feedstock is captured and converted into graphite, rather than being converted to carbon dioxide as in other processes.
Test work details
Initial battery testing in December 2016 looked at a first discharge and 10 cycle performance of Hazer’s non-optimised (purified to 99%) synthetic graphite.
The company has now undertaken additional longer term testing at different charge and discharge rates.
Hazer’s non-optimised graphite exhibited excellent performance including:
- 50 cycles with reversible capacity of about 280 mAh/g and 96% capacity retention at the rate of
0.2 C (5 hours charge, 5 hours discharge); and
- 100 cycles with reversible capacity of about 200 mAh/g and 98% capacity retention at the rate of 0.8 C (75 minute charge, 75 minute discharge rate).
The longer-term cycle data also illustrates that batteries using Hazer’s graphite continue to show equivalent performance to benchmark commercial synthetic graphite, which is used in lithium-ion battery applications.
Construction of pre-pilot plant
Hazer recently commenced the construction of its pre-pilot plant, which will enable the final verification of the design for the larger commercial scale pilot plant.
This plant is a key stage in the development of the Hazer Process, and is the first stage in Hazer’s transition from laboratory-based standard equipment to a custom-designed and constructed plant.
Following commissioning and operation of the pre-pilot plant, Hazer intends to construct a prototype small scale commercial hydrogen and graphite plant.
These results demonstrate the performance characteristics of Hazer’s graphite and indicate its potential to become a suitable alternative to traditional mined or synthetic graphite in lithium-ion batteries.
These results highlight the potential for Hazer’s graphite to be used in the growing lithium-ion battery market.
Graphite is a key raw material in lithium-ion batteries as the anode is primarily graphite.
Results from initial battery testing put Hazer a step closer to offering battery manufacturers with a cleaner, low cost, high quality alternative to traditional mined or synthetic graphite for use in lithium-ion batteries.
The company is also reviewing other markets where demand for graphite currently exists.
Hazer is currently evaluating options to assist it to validate the commercial viability for its graphite in multiple markets including the steel industry, lubricants and automotive applications.
Shares in Hazer are up 120% over the past 12 months, currently priced at $0.62.