Samsung's research wing has successfully developed a "graphene ball" that would help batteries charge up five times faster than conventional lithium-ion batteries. Because of high-speed charging, the graphene ball battery would be ideal for electric vehicles.
Samsung Advanced Institute of Technology (SAIT) said on Monday that it has successfully synthesized graphene ball material which can increase the capacity of batteries and dramatically shorten their charging time. lithium-ion batteries take about one hour to fully charge but the graphene ball battery takes only 15 minutes, it said.
Graphene is a layer of carbon atoms arranged in a hexagonal lattice. It is very durable and highly conductible, making it ideal for electronic devices. SAIT researchers synthesized the three-dimensional popcorn-like graphene ball by applying silica (SiO2) to it.
The graphene ball battery maintains a temperature of 60 degrees Celsius, which is required by electric vehicle makers to prevent explosion caused by overheated batteries.
Graphene can be chemically processed into various forms. It is useful in a wide range of batteries, and scientists have tried to develop reliable, cost-effective and facile processes for the fabrication of graphene electrodes with good performance.
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