Aluminum Foil for Battery Cathode Substrate

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. Also, aluminum does not dissolve in high action potential levels in non-aqueous electrolyte solutions such as in lithium-ion batteries. These properties makes aluminum a good choice to be used as cathode collector in lithium ion batteries. With these properties porous aluminum also can help the weight reduction of component materials, and improvement of heat transfer and performance quality of lithium ion batteries.

There are some options to improve the properties of aluminum foil. Recently, aluminum foils with coated by carbon is started to use in lithium ion batteries. This foil can reduce overall charge transfer resistance and improve adhesion at the active layer/current collector interface, and also prevent Al corrosion caused by organic electrolyte and even alkaline slurry.

Comments

Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT. Image retrieved from: https://worldindustrialreporter.com/strong-light-flexible-carbon-nanotubes-threads-with-ultrahigh-conductivity/ One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread th...

Multi Walled Carbon Nanotube Dispersions

Carbon nanotubes (CNTs) have attracted enormous attention in recent years due to its unique physical, electronic, optical and potential applications in materials science and nanotechnology. The van der Waals interaction between tubes, however, makes CNTs aggregate in most organic solvents and aqueous solutions, which is the major limitation of their practical applications.Various approaches have been studied to alter the CNT surface to promote the dispersion of individual nanotubes and prevent their reaggregation. On the basis of this widely accepted viewpoint, numerous techniques such as covalent bonding, surfactant coating and polymer wrapping have been developed for surface modification or sidewall functionalization.These methods, however, are complicated, time-consuming and cause permanent damage to the CNT structure and properties of the surface, which produces residues of the dispersion agent for the final product. Figure: Single Walled Carbon Nanotube (SWCNT) It ha...

Magnesium Oxide Nanoparticles/Nanopowder and Applications

General Information about Magnesium Oxide Magnesium oxide which has the chemical formula of MgO, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of Magnesium. It is a white powder at room temperature. Magnesium Oxide has very high melting point (2825 o C) and boiling point (3600 o C). Magnesium Oxide Nanoparticles/Nanopowder an...

Nanografi Nanotechnology

Search This Blog