A recent study found there is potential to reuse discarded lithium-ion (Li-ion) cells in applications with less demanding energy needs.
The research, by software developer Sequence Digital, found that 59.41 per cent of discarded Li-ion cells retained more than 80 per cent of their original capacity.
Patrick Blampied, Director, Sequence Digital said there is a growing amount of lithium-ion battery waste and a lack of viable disposal options in Australia.
“Our research demonstrates that, with the right precautions, up to 59 per cent of discarded lithium-ion cells from small cordless appliances could be reused elsewhere before recycling,” he said.
The project team explored 50 discarded battery packs containing cells that were still useable. They were disassembled and tested to assess the viability of reusing cells in new applications.
The battery packs were supplied by the Geelong Resource Recovery Centre and Transfer Station, which allowed the team to begin procedures for safe handling, cell extraction and testing.
Blampied said the potential for safe reuse in new applications was validated with a specially designed battery management system (BMS) prototype that managed and monitored individual cells with varying capacities and from different manufacturers.
The BMS is capable of handling mixed-capacity cells, and results showed that it is possible to delay the end-of-life disposal and recycling stage of serviceable cells.
Researchers found a system for reuse of cells is possible, provided precautions are taken and regulatory requirements for products in Australia containing Li-ion are investigated.
The team identified potential pathways for the safe and compliant reuse of Li-ion cells, which could open new markets for battery recyclers and stewardship programs. It could also reduce dependence on raw materials.
Blampied said reuse, before recycling, is a major component of circular economy principles.
“All the work and pollution associated with mining, refining, processing and manufacturing a product is already done,” he said.
“In developing a prototype battery management system capable of managing mixed-capacity cells, we have laid the groundwork for new markets in safe battery reuse. We’re thrilled to contribute to product reuse.”
The City of Greater Geelong has awarded Sequence Digital funding to further develop the prototype and take it through regulatory testing.
The BMS is now on display at the City of Greater Geelong’s Garden Organics Processing Facility.
For more information, https://sequencedigital.com.au/
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