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Lithium-ion batteries are the first choice for all kinds of devices, and lithium batteries are now used in smartphones, computers and other devices.
With the equipment manufacturing factory of battery capacity is extremely high demand, researchers at the university of Texas at Austin have developed a new type of lithium-ion battery anode material, the material can help narrow the volume of a lithium battery, can also be twice the size of the battery capacity of ascension, and reduce the cost of the battery.
There are many factors that can influence the battery capacity, including discharge rate, temperature, voltage, plates and other factors, which has the greatest effect in the plate of the battery capacity, because the plate geometry size, thickness and height and area will affect it.
And mass production of lithium ion battery are using graphite or copper as the anode, and lithium battery current collecting parts and anode is the same, so the choice of anode material selection for the size of the battery capacity is particularly important.
In addition, making the anode is also a laborious multi-step process where the graphite is to be developed into powder and coated in copper foil.
Karl Kreder, a materials scientist at the university of Texas, commented: "whether it's manufacturing processes, or the transmission efficiency of the battery itself, it reduces efficiency."
In view of the problems existing lithium-ion batteries, the team developed the called cross eutectic alloy (IdEA) of new anode materials, as long as two simple steps can be large-scale production of lithium ion battery, saving time and material saving.
It is understood that, in appearance, the researchers made foil materials based on the new material, which is half the weight of graphite or copper in all lithium-ion batteries today, and a quarter of the thickness.
"It's exciting to be able to develop a low-cost electrode nanomaterial manufacturing process," said Arumugam Manthiram, a professor at the Texas institute of materials.
In recent years, the main concentration of lithium ion battery electrodes has been concentrated on nanomaterials, and the team chose eutectic alloy, and Kreder explained, "because of thermodynamics, eutectic microstructures are naturally formed.
So we can crush it to stop the formation of the structure, which is a very cheap step, to transform the microscopic structure into a nanostructure."
Applications, at the request of the same battery capacity, the material of the team can significantly reduce the size of the lithium battery, it advanced the areas such as mobile phones, medical equipment, electric cars, the further development of lithium battery performance.