Nanografi Nanotechnology

   The lithium-ion battery is widely used in the fields of portable electronics to electric cars, due to their superior energy density over other rechargeable battery technologies and promising energy storage applications. The unique one-dimensional structure formed by the graphene layer makes carbon nanotube-based conductive additives possess excellent mechanical, electrical, and electrochemical properties and becomes a hot material in the research of lithium-ion battery.  CNTs-based Conductive Additives for Lithium Ion Battery  are a kind of composite having high electric conductivity containing high electric conductive carbon nanotubes and carbon black. The  Carbon black  particles help preventing carbon nanotubes dispersion from reagglomeration, exhibit synergetic effect with CNTs in Li-ion battery and enhance the conductivity of the composite electrodes. This product can be used in both anodes and cathodes of the  Li-ion batteries  and imp...

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 i...

With the increasing importance of  lithium ion batteries  we start to see them in electronic devices that we use everyday like laptop computers and cellular phones. There are many components to obtain the best performance from lithium ion batteries and one of these components is current collectors. Current collectors must be electrochemically stable when they are in contact with the cell components during the operation. Here it is very important to ensure battery performance and safety. So it is very important to form a thick and compact, protective film on the metal surface of the battery. Because the corrosion of the film of the battery may result in a short-circuit and this is an unsecured situation for all of us. Aluminum foils as cathode materials  in lithium ion batteries are a good candidates for current collectors because it has some advantages for being used. Aluminum has lower specific gravity, lower electrical resistivity and higher heat conductivity. Al...

Lithium cobalt oxide  is a chemical compound with the chemical formula of formula LiCoO 2 . Lithium cobalt oxide is a dark blue or bluish-gray crystalline solid and is commonly used in the positive electrodes of  lithium-ion batteries . As all we may know lithium ion batteries are used in household electronics like mobile phones and laptop and these batteries are considered as the most promising energy storage and conversion device candidates for use in future electric vehicle applications because of having very high energy density. In lithium ion batteries lithium cobalt oxide is one of the earliest founded lithium metal oxides used as  cathode materials . The usage of lithium cobalt oxide started with the studies of Sony. Sony combined the lithium cobalt oxide cathode with a carbon anode and made the first successful lithium ion battery. It was a visionary study because this kind of battery now dominates the lithium battery market. Lithium cobalt oxide is preferred...

In the past two decades with the prevalence of portable consumer electronics, the demand for rechargeable energy storage sources of high energy density and low weight has been growing rapidly. Currently larger applications such as zero emission electric vehicles and satellites put up even more stringent requirements for energy storage devices in both energy density and power density. In all of these applications high performance  batteries  are more and more desired. Lithium ion batteries  are good materials for this high performance demand. There are different methods and chemicals for the production of lithium ion batteries. A lithium ion battery cell is composed of two electrodes, which are the anode and cathode, a separator, and an electrolyte. Generally, the electrodes are fabricated by applying coating slurry onto a metallic foil. One of the metallic foils that are used in lithium ion battery anode parts is  copper foils. Among different conductive substra...