Batteries are becoming more and more important for today’s world and are finding more and more areas of application. A boom market that should rapidly gain momentum in the coming years is electromobility, which will require huge amounts of batteries. Increasing the performance of the batteries will be of crucial importance. The path should lead via so-called supercapacitors, in whose improvement the wonder material graphene could play an important role – and with it the small, Australian graphene producer First Graphene (WKN A2ABY7 / ASX FGR).
For First Graphene’s product PureGRAPH, according to recently carried out tests, show that graphenes decorated with metal oxide have a significantly higher capacity per unit area than the activated carbon materials currently used in supercapacitors.
Chemical batteries such as those based on lithium-ion technology release their energy through chemical processes between the cathode and anode. The stored energy can be released over a long period of time. If the cycle has run through often enough, after numerous loading and unloading processes, the chemical substances are exhausted and the battery must be replaced.
On the other hand, supercapacitors, which are based on electrical double-layer capacitance (EDLC), enable fast charging and discharging with a high power density. Because of their large surface area, they usually use activated carbon as a storage medium and do not depend on chemical reactions, as they are based on charge separation within the device. Which means that supercapacitors are more stable and usually very durable.
For electric vehicles, the ideal storage medium would be a combination of a chemical battery with a high energy density and thus a long range, as well as a supercapacitor with its rapid charging and discharging capability. This could ultimately extend the range of the electric vehicle.
According to First Graphene, the ideal path to such a combined system is so-called pseudocapacitor technology. With it, the performance of a supercapacitor can be increased drastically. One way to do this has been discovered at the University of Manchester and First Graphen has already succeeded in taking this groundbreaking process from the laboratory to a larger scale.
A hybrid of a metal oxide such as manganese oxide applied to a porous, electrically conductive structure such as e.g. Graph drawn. First Graphen has now carried out various tests with the Warwick Manufacturing Group in the UK, one of the world’s leading laboratories for battery tests. It was shown that the use of graphene materials “coated” with oxides in supercapacitors could actually achieve clear increases in performance compared to conventional activated carbon.
This indicates that First Graphene’s PureGraph product could be used for these purposes! A decisive step in a field that could present the small company with huge opportunities in the future. Before that, however, there are further tests and investigations, which First Graphene will initiate shortly with the Warwick Manufacturing Group. We keep the readers of GOLDINVEST.de up to date!
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