On Monday, Samsung Electronics announced that its research division Samsung Advanced Institute of Technology have developed a technology of production of advanced lithium-ion batteries. Without compromising the key characteristics of modern lithium-ion batteries was accelerated as the time of charge and capacity of new batteries. It is reported that the new batteries will gain the same capacity in just 12 minutes instead of one hour as it is now, and the battery capacity will increase by approximately 45 %.

Created in Samsung technology is protected by patents in the U.S. and in South Korea. It relies on the use of graphene. Graphene, as you know, has a 140 times better conduction of electrons than the semiconductor materials. This comparison is appropriate since one of the promising batteries are considered solid-state batteries with solid-state electrodes. In the case of new development Samsung both conventional electrode — anode and Nickel cathode is uniformly covered with a layer of so-called graphene balls. The electrolyte remains but the graphene coating enables to increase the current capacity and to expand the operational temperature range.

Graphene balls are formed by chemical vapor deposition in a vacuum from the gas phase (CVD). This graphene formation around the silica which serves as a center for the growth of balls of graphene. A new coating for the anode promises to raise the battery capacity to 716,2 mA·h/g, and filling the battery cells graphene balls allows 27.6 % increase in volume density of stored energy. In the future it will allow you to bring the characteristics of serial batteries up to 800 WH/L. after 500 charge cycles at a temperature of 60 degrees Celsius capacity falls only to 78.6 % of the original — this is a good result (details in the article on the website of Nature).

Support high operating temperatures without rapid degradation and without increasing the risk of fire opens up new doors in technology batteries for electric and hybrid vehicles. However, Samsung has not forecast the timing of the transfer of this technology to commercialization. This is one of many opportunities to go to the next level of quality of batteries. It will be key or not, only time will tell.

Source: 3Dnews.ru

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