vishal panwar May 17, 2021

NEW DELHI: A lithium-ion-powered electric car on sales takes roughly around 8-10 hours to a full charge when plugged into an AC wallbox charger. EVs have a significantly lower running cost but at the same, range anxiety is something that automakers around the world are trying to address.
Research conducted by Australian clean-tech company Graphene Manufacturing Group (GMG) in association with the University of Queensland has invented coin cells that use surface perforation of graphene in aluminium-ion batteries.
Craig Nicol, CEO of GMC, said, “These aluminium-graphene batteries run on the same voltage and have a similar shape to that of Li-ion batteries. However, these are hybrid battery superconductors, which allow them to retain three times more energy and takes up to 70 times lesser times to recharge.”
GMG will manufacture commercial battery prototypes for watches, phones, laptops, electric vehicles and grid storage with technology developed at UQ. The real differentiator about these batteries is their very high power density of up to 7,000 watts/kg, which endows them with a very high charge rate.
Nicol said, “We are currently looking to bring coin cell commercial prototypes for customer testing in 6 months and a pouch pack commercial prototype – used in mobile phones, laptops etc – for customer testing in 18 months.”
According to Ashok Nanjundan, GMG’s Chief Scientific Officer, this can offer a real alternative with interchangeable battery technology for the existing lithium-ion batteries in almost every application.
“The current nominal voltage of our batteries is 1.7 volts, and work is being carried out to increase the voltage to directly replace existing batteries and which lead to higher energy densities,” said Nanjundan.
Graphene aluminium-ion batteries provide major benefits in terms of longer battery life (over 2,000 charge/discharge cycles testing so far with no deterioration in performance), battery safety (very low fire potential) and lower environmental impact (more recyclable)
Moreover, the production of aluminum-graphene batteries will not require the usage of nickel, cobalt and copper. “So, it will give sovereign capability and resilience around the energy sector. Aluminium is one of the most recyclable metals will reduce the stress on mining,” Craig said.

Source link

Leave a comment.

Your email address will not be published. Required fields are marked*