Reduce dendritic extension of lithium-ion battery life with tape

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - ପୋର୍ଟେବଲ୍ ପାୱାର ଷ୍ଟେସନ୍ ଯୋଗାଣକାରୀ

The scientific research team of Les University is based on tape, combined with some advanced laser technology, and has developed a new type of electrode material. This material can overcome the long-term problems of the current lithium-ion battery and expect to increase the performance of the battery. Lithium metal battery refers to a battery that is conventionally used as a graphite that is used as an anode (two electrodes) to pure metal lithium battery.

Since this material has a very high energy density, metal lithium can make the battery's charging speed is greatly accelerated, and the capacity can reach 10 times. However, there are still some shortcomings in lithium-ion batteries, which is more troublesome to "dendrites". During charging, these dendrites are formed on the surface of the anode and may result in short circuits, failure or fire, so a large number of battery studies are gathered in killing them.

The scientific research team from Les University has a new breakdown in this category, first is a tape. The team passes the tape to the copper current collector constituting the lithium anode, and is solved with a laser to heat it to the extreme temperature of 2300 Kelvin (3680 ¡ã F or 2026 ¡ã C), thereby imparting some very useful. New feature.

This process turns the tape into a porous coating, which is desirable to compose from silicon, oxygen, and a small amount of wonderful graphene. For the preliminary test of the film, it can be used as a protective layer of the current collector assembly, which can absorb and release metal lithium, and will not cause harmful dendrites. In its laser-induced silicon oxide protection coating, the Less University team may have found an approach to use these positive factors, not newly increased lithium burden.

Its test statement, the battery equipped with its new coating exhibits three times the life of other "zero excess" metal lithium-ion batteries, and reserves 70% capacity in 60 charge cycles. The team analyzes that this technology is rapid and safe, does not involve solvent, and can be carried out at room temperature. Therefore, it is sent to the hopes and believes it has a large-scale potentia.