U.S. develops 3D printing method to create microscopic porous lithium battery

August 2 news, American engineers have developed a 3D printing method, it is possible to greatly improve the capacity of lithium-ion batteries and charge and discharge speed.

If the electrodes of a lithium-ion battery contain microscopic pores or channels, their capacity will be greatly improved. At present, the best porous electrode made by additives has internal geometry that intersects each other, which allows lithium ions to swim freely in the battery during charging and discharging, but this is not the Ideal design.

A research team led by Rahul Panat, an associate professor of mechanical engineering at Carnegie Mellon University, has collaborated with Missouri University of Science and Technology. They have developed a new method for 3D printing battery electrodes that can create a controlled pore Microscopic metal structure. Their research results have been published in "Additive Manufacturing" magazine.

Panat said: "In lithium-ion batteries, electrodes with a porous structure can bring stronger storage capacity. This is because this structure allows a large amount of lithium ions to enter the electrode, which can achieve higher electrode utilization, And it brings higher power storage capacity. In ordinary batteries, 30% to 50% of the electrodes are not used. We have overcome this problem through 3D printing technology. The microscopic electrode structure manufactured by 3D printing can make lithium Ions are transported more efficiently in the electrodes, which also improves the charging speed of the battery. "

The microscopic metal structure used as the electrode of a lithium-ion battery can increase the specific capacity by four times, and the area capacity has increased by two times compared with the traditional solid battery. According to researchers at Carnegie Mellon University, after 40 electrochemical processes, these electrodes still retain their complex 3D lattice structure, which also confirms their mechanical stability.

Researchers at Carnegie Mellon University have leveraged on the existing capabilities of air jet printing 3D printing systems to develop their own 3D printing methods to create porous microscopic metal structures. Prior to this, the research of 3D printing batteries was limited by the extrusion printing technology, which is a printing technology in which a continuous structure is formed by extruding materials through a nozzle. With the help of extrusion printing technology, only cross-structured batteries can be manufactured.

With the new method developed by Panat's laboratory, researchers can quickly stack individual droplets one by one into a three-dimensional structure to print out the battery electrodes. The structure printed by this technology has complex geometric characteristics, which cannot be manufactured by traditional extrusion printing methods.

Panat said: "Because these droplets are separated from each other, we can create this new complex geometric structure. If they are continuous materials like the kind used in traditional extrusion printing technology, we cannot make This kind of complex electrode structure. This is a new field of research. Before that, I did n’t think anyone could create these complex structures with the help of 3D printing technology. Industrial applications can be realized within 2 to 3 years.

Our withdrawing wire tool can be used in cooperation with the conductor gripper to tighten the conducting wire. Our product is designed with the friction structure,whcin is flexible and reliable to turn. And our steel double hook turnbuckle plays a role in tightening the Steel Wire Rope, stranded steel wire, and some others. This product from 14113 to 14116 can be also provided with the ring structure, which must be clearly indicated in the contract. And the ratchet tackle block is always found in the line construction. It serves to tighten up the stranded steel wire, and aluminum stranded conductor, among others. The telescopic length reached 1 m.


 3



Tightener

Ratchet Withdrawing Wire Tool,Cable Ratchet Tightener, Cable Tightener Rigging, Cable Turnbuckle Hardwares

NINGBO MARSHINE POWER TECHNOLOGY CO., LTD. , https://www.marshine-power.com