Australian company creates aluminum and graphene batteries that charge 60 times faster than lithium-ion batteries
Australian company from Brisbane called Graphene Manufacturing Group (GMG) developed batteries based on the work of the Australian Institute of Bioengineering and Nanotechnology at the University of Queensland (UQ).
The resulting battery turned out to be much better in many respects than the existing lithium-ion batteries. It is about this discovery that I want to tell you today.
What is the new lithium aluminum battery
So, new GMG batteries have the following advantages:
1. No rare earth metals are used in its design.
2. They do not support combustion, unlike the same lithium-ion batteries.
3. Capable of withstanding huge currents.
4. They function normally over a wide temperature range.
Such outstanding results were achieved through the use of a new cathode, which was realized from several layers of perforated graphene with pores of approximately 2.3 nm.
Then, aluminum atoms were placed in these pores, which made it possible to achieve a dense material in terms of a margin energy and at the same time obtain a high current carrying capacity, in comparison with lithium-ion batteries.
In addition, it should be borne in mind that one aluminum ion during charging is exchanged at the cathode for three electrons at once, while one lithium ion is able to exchange for only one electron.
New Battery Specifications
According to the statements of GMG engineers, the current characteristics of the resulting battery reach 149 mAh and 5 A / g. Of course, such parameters of the created battery are at least 30-40% worse than those of modern lithium-ion batteries.
But the new battery is at least three times more efficient than the aluminum-graphene battery samples implemented at the Stanford University lab.
The batteries created by the Australian company can boast of a capacity of about 160 W * h / kg and a capacity of 7,000 W / kg.
Due to the fact that the created battery was able to "digest" high currents quite easily, engineers call their "brainchild" almost a new generation supercapacitor.
Thus, the “coin” -type element created in this way was able to charge in just a couple of seconds, in contrast to the same classic lithium-ion batteries. It is with such elements that engineers plan to begin their commercial production of aluminum-graphene-ion batteries as early as 2021.
Well, one can only wait and hope that laboratory samples will also work perfectly in industrial production.
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