1000 kms on one charge: Local firm claims breakthrough in EV battery tests

Tests by local firm Li-S Energy on its battery technology has shown a 10-fold improvement in cycle life compared with typical lithium sulphur cells.

Dec 23, 2021, updated Dec 23, 2021

“This is a landmark in lithium-sulphur batteries. Our single layer boron nitrate nanotubes enhanced pouch cell tests have now surpassed 1100 cycles, more than 10 times the cycle life of typical lithium-sulphur cells,” the company said in a newsletter to investors.

“To put this into context, range anxiety and resale anxiety are the two major obstacles to electric vehicle adoption.

“Delivering both high density and long battery cycle life makes the potential of a 1000km EV with a 1 million kilometre battery lifetime far more achievable.”

Li-S is banking on the boron nitrate nanotubes to make the difference in its batteries. The BNNT helps regulate heat in the batteries and keeps them stable, which had been a significant issue for lithium-sulphur batteries.

This year the company, which was spun out of PPK in spectacular fashion in September, has built more than 480 test cells and was now moving to multilayer pouch cell testing, which it described as a “key step” because it would replicate how a commercial battery would perform.

The company is also building a lithium-metal battery, using a nanomesh. These types of batteries are considered significantly better than the existing lithium-ion and seen as a “half-way” technology which may lead to the adoption of lithium-sulphur because they could be built by existing gigafactories.

This would create a quicker path to licensing and nanomaterial supply, the company said.

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Li-S shares closed yesterday at $1.33, 42 per cent down on the debt trading price but still substantially above the IPO price.





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