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New anode material

From:CTECHI GROUP Limited     Release time:2019-04-11

Overview:The key to the breakthrough of LIB is the development of a new anode material. The new material has a capacity density of 2500 mAh/cm3, while the ordinary graphite anode material is only 550 mAh/cm3, and the new material is different with Lithium Manganese Dioxide battery for digital cameras. The principle is achieved by applying a coating treatment on the silicon microparticles with several layers of graphene.

The key to the breakthrough of LIB is the development of a new anode material. The new material has a capacity density of 2500 mAh/cm3, while the ordinary graphite anode material is only 550 mAh/cm3, and the new material is different with Lithium Manganese Dioxide battery for digital cameras. The principle is achieved by applying a coating treatment on the silicon microparticles with several layers of graphene.

The capacity density of silicon is as high as about 4000 mAh/g, and its great potential as a negative electrode material has long been known. However, when silicon is used as an electrode, not only the conductivity is low, but also the charge/discharge cycle is extremely short. When lithium ions are adsorbed and released by charging, the silicon fine particles greatly expand or contract, and thus the conductive additive for ensuring conductivity is peeled off.

By applying a coating treatment to the silicon microparticles with graphene, Samsung Electronics has successfully ensured conductivity and suppressed electrode deterioration and damage during expansion and contraction. When the silicon microparticles expand, the graphene expands the silicon storage capacity by sliding each layer in a state in which the silicon microparticles are encased, so that it does not fall off.

Samsung said that when evaluating the performance of the battery unit, the negative material used this new material, and the positive electrode material used lithium cobalt oxide commonly used in the existing LIB, without special treatment.

If this research result can solve the problem of low cycle number, it is expected that the overall cruising range of the lithium battery for the future can double the same volume. Although the current energy density can be increased to four times, considering the overall problem of making the battery pack into a battery pack, the overall energy density will be further reduced, and the battery life of the battery will be adjusted to twice to three. Times. If you want to learn more about 3.6V 2000mah Li-SOCl2 battery,you can contact us.


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