The Samsung Advanced Institute of Technology announced that it succeeded in developing a battery material called grapheme ball, which can charge the battery more than five times faster than the conventional lithium ion battery by increasing the charging capacity by 45%.

Bell says the old battery lasts for about an hour for full charge even with fast charge technology, but a battery with graphene ball material can be fully charged in 12 minutes. He added that batteries can maintain stability up to 60 ° C, which is the temperature standard required by electric vehicle batteries.

The results of this research are published recently in the journal Science Nature Communications titled "High-speed charging using high grapheme ball and high capacity lithium ion battery implementation".

Meanwhile, origin of the species was to find a way to apply grapheme with high strength and conductivity to the battery, and then to identify mechanisms for mass synthesis of grapheme into a three-dimensional solid form, such as popcorn, using inexpensive silica (SiO2). This grapheme ball was used as a positive electrode protective film and a negative electrode material of a lithium ion battery, resulting in an increase in the charging capacity, shortening the charging time as well as satisfying the high temperature safety.

Grapheme is a carbon film that is peeled off from graphite. It is able to move electrons more than 100 times faster than copper and can move electrons 140 times faster than silicon, attracting attention as a new material for batteries and displays. Bell Origin has filed two patents in the United States and Korea for related technologies.

"This research has enabled us to synthesize a multifunctional high crystalline grapheme composite material at low cost and in a large amount, and at the same time, it has greatly improved various properties of lithium ion batteries," said Sung In-hyeok, a first author of the paper.

Meanwhile, Samsung SDI and Professor Choi Jang-wook of the Department of Chemical and Biological Engineering at Seoul National University jointly participated in the study.

By Park Jung Il comja77@


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