Providing high performance, long life battery current collector
Now, lithium-ion batteries mostly employ the aluminum foil as the positive current collectors and the copper foil as the negative current collectors. Both of their purities, which should be above 98%, are the main requirements for the stability of the current collectors inside the battery.
While working on lithium battery materials and production processes for over 20 years, Xiaowei addressed the problem of reducing the thickness and weight of battery current collectors and at the same time, making them better in performance and energy density. Our current collectors, which are very beneficial, can be used on lithium batteries for digital products or electric vehicles batteries as well. Like in any sector of both electrochemical performance and volume weight, they are at the world’s top level.
Xiaowei continually makes breakthroughs in technology and processing technology, which in turn leads to the solution or improvement of various problems such as high-temperature circulation, welding, and fast charging of battery current collectors, and can really assist you in the mass production of high-performance lithium-ion batteries.
Choose a reliable battery current collectors supplier
Xiaowei is the top supplier of battery current collector in the world. Thanks to the use of state-of-the-art manufacturing processes, conductivity and corrosion resistance in the current collectors have been raised, and thus the electrode cycles of lithium-ion batteries have been improved as well.
We offer the best positive and negative current collectors. Apart from the aluminum foil and copper foil, we also offer rolled copper Foil, electrode posited, current collector, nickel current collector, stainless steel mesh current collector, porous stainless steel, current collector, carbon nanometer current collector, etc.
We offer customizable battery current collectors that you can quickly apply in modern lithium battery manufacturing. The properties of collectors made from different materials and with different processes can give your lithium batteries a certain performance advantage. Contact us today! We are able to provide flexibility throughout the lithium battery manufacturing production process and produce them in perfect batches.
F.A.Q.
The current collector is the general term for the copper foil and aluminum foil in lithium batteries, which carry active materials and collect current. The current collector generally refers to the base metal used to carry active materials (positive and negative electrode materials) at the positive and negative electrodes of the battery. The current generated by the active materials during the charging and discharging process is collected by the current collector and then output to the external circuit.
The current collector is one of the indispensable components of lithium-ion batteries. It not only carries active substances, but also collects and outputs the current generated by the electrode active substances, which is beneficial to reduce the internal resistance of lithium-ion batteries and improve the coulombic efficiency, cycle stability and rate performance of the battery.
Aluminum foil is currently the most important positive electrode current collector for lithium-ion batteries. It has good conductivity, light weight, low cost, and the passivation layer on its surface can prevent corrosion from the electrolyte during the charging and discharging process.
Copper is an excellent metal conductor with electrical conductivity second only to silver. It has many advantages such as abundant resources, low cost, easy availability, good ductility, etc. However, considering that copper is easily oxidized at high potential, it is often used as a current collector for negative electrode active materials such as graphite, silicon, tin, and cobalt-tin alloy.
At present, the materials commonly used as lithium-ion battery current collectors include metal conductor materials such as copper, aluminum, nickel and stainless steel, semiconductor materials such as carbon, and composite materials. We can provide all of these materials, and you are welcome to contact us at any time.