The lithium ion batteries are interested nowadays because of their high capacity and being environmentally friendly. Lithium ion batteries are one of the most important power sources and they are widely used in laptop computers and mobile phones due to their high energy density. Lithium ion batteries are also effective for using in hybrid electric vehicle. Of course in this kind of applications large size of lithium batteries are used.
As all we may know lithium ion batteries are consist of two parts; cathode and anode. When we look at the researches about the anode part of lithium ion batteries, we can see that in this studies it is aimed to improve material capacity and cyclability.
To get better result for improving capacity and cyclability, graphite powders can be used in lithium ion batteries as anode materials. Graphite anodes provide efficiency, reversible capacity and cycle stability to lithium ion batteries when they are used as anode materials. Also it is possible to improve the properties of lithium ion batteries by using graphite powders with the higher graphitization degree, higher purity, more suitable particle size distribution.
So far so good, it is also possible to have more improved performance from graphite powders. If you treat graphite powder with oxidative solutions of hydrogen peroxide, cerium sulfate, nitric acid and ammonium persulfate, the electrochemical performance of lithium ion batteries will improve.
Cycle numbers of lithium ion batteries with graphite anode materials may be a problem sometimes but there is a solution for that. To improve the cycle numbers of these kinds of batteries, graphite powders may be coated by aluminum fluoride. The aluminum fluoride coating will not change the properties of graphite but there will be a significant increase in the capacity and cycle number in lithium ion battery.
If you need graphite powders an anode materials used in lithium ion batteries, you may check the links given below and give an order:
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