Skip to main content

Graphite Powders as Anode Materials for Lithium Ion Batteries

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:
Labels:

Comments

Post a Comment

Popular posts from this blog

Molybdenum Trioxide Nanoparticles/Nanopowder and Applications

General Information about Molybdenum Trioxide                                                     Molybdenum trioxide is chemical compound with the formula MoO3. Its chief application is as an oxidation catalyst and as a raw material for the production of molybdenum metal.  Molybdenum Trioxide  is a very light blue powder. Molybdenum Trioxide Nanoparticles/Nanopowder and Their Applications                                                    Like many  nanoparticles/nanopowder , Molybdenum Trioxide nanoparticles/nanopowder are used as catalysts. These catalysis reactions include hydrogenation catalysis and cracking catalysis. Molybdenum Trioxide nanoparticles/  nanopowder are useful for...
Post a Comment
Read more

Rundown about Silicon Oxide Wafer

The main insulating material used in micro-technology is Silicon Dioxide, which in chemical symbols is written as SiO2. In semiconductor technology, SiO2 thin film layers are mainly used as dielectric material film in transistors, capacitors (DRAM) or flash-memories. Silicon Oxide Wafers are produced using crystallization, solid state and other ultra-high purification processes such as sublimation. This process forms a cylindrical ingot, which is then sliced and polished to form wafers. Thermal oxide is a kind of "grown" oxide layer, compared to CVD deposited oxide layer, it has a higher uniformity, and higher dielectric strength, it is an excellent dielectric layer as an insulator . In most silicon- based devices, thermal oxide layer play an important role to pacify the silicon surface to act as doping barriers and as surface dielectrics. The simplest way to produce an insulating silicon oxide layers (SiO2) on silicon wafers is to oxidize silicon with oxygen, which ...
Post a Comment
Read more

New Way of Deaf-Mute Communication with 3D Graphene

Image retrieved from: http://blogs.rsc.org/cc/2016/09/01/3d-graphene-adds-dimension-to-deaf%E2%80%93mute-communication/ Chinese scientists have developed wearable electronic device with conductive 3D graphene structure to translate sign language into written text. This technology can be applied by injecting graphene ink from a syringe under printed electronic field. For medical field, such as adhesive patches which determine heart, brain signal and neural activity, wearable and bio-integrated medical devices are very important. Due to noticeable properties of cast graphene, for example a 2D honeycomb lattice, excellent mechanical and electrical behaviors, Graphene has an important material in warble technology. However, it is difficult to preserve advantages of Graphene material in a 3D material which has an information about forces from every angle. Yanlin Song  and co-workers at the University of the Chinese Academy of Sciences, Beijing, and Shenyang Jianzhu University...
Post a Comment
Read more