At graphene batteries promise faster charging and less risk of explosion, but have yet to reach cell phones. According to Evan Blass, known as @evleaks, this could change as early as 2020, when Samsung should launch a smartphone with this technology. The company has been conducting research on graphene for several years.
“Samsung expects to have at least one cell phone next year or in 2021, I am told, that it will have a graphene battery,” says Blass on twitter. It could reach full charge in less than half an hour, but the company needs to increase capacity while reducing the costs of this component.
Graphene, a form of carbon, is a versatile material for its efficiency in conducting electricity and its superior resistance to that of steel; it is also very light and flexible.
Graphene battery can charge faster
Let’s recap some basic battery concepts. Lithium-ion models have four main components: cathode, or positive terminal; anode, or negative terminal; electrolyte, a liquid that conducts electricity; and porous separator.
The ions, electrically charged particles, go from the anode to the cathode through the electrolyte. This discharges electrons on the anode side, supplying power to gadgets, electric cars, among others. When the battery is recharged, the process is reversed.
The anode is usually made of graphite, but graphene may be a better alternative. In 2016, scientists at Stanford University created a technology that prevents overheating and explosion of Li-Ion batteries: the positive and negative terminals are coated with graphene.
In turn, Samsung researchers created in 2017 a lithium-ion battery with anode and cathode made of graphene balls. It could go from 0% to 100% in twelve minutes, while a traditional model with the same capacity took an hour.
Samsung has been working on projects involving graphene for many years, including a technique for producing it on a large scale. This can help the material to become cheaper, increasing its adoption in the industry. Will the company be ready to launch batteries with graphene? We will have to wait until 2020 (or 2021) to find out.
With information: Mashable.