Repeatedly crumpling the nanomaterial graphene, but can enhance some of its features.Northwestern University researchers have found that wrinkled grainy graphene can be used to enhance the charging performance characteristics of lithium batteries to overcome some of the defects of lithium batteries.US Jiaxing Huang, an associate professor at Northwestern University, explains: 'In the current battery technology, lithium needs to be automatically dispensed from another material such as graphite or silicon.'
'While using additional materials will' decay 'the performance of the battery, lithium is already a metal and why it does not make use of lithium itself.' Because micro-lithium fibers accumulate on the surface of the electrode as the battery charges, when they are dispersed, Eventually resulting in a short circuit, the researchers used 3D nano-graphene to enhance performance and prevent the formation of branch-shaped crystals.Northwestern University's research team found that by processing the nano-graphene wrinkle process, will greatly increase the lithium Battery storage performance, but also to prevent the formation of lithium branch crystal significantly improve the charging performance of lithium batteries.
Associate Huang said that 'our strategy is to reverse thinking and the particles are not bound to each other, and when combined with lithium, they still make up a continuum of electrically conductive materials. When the lithium is separated, the particles can be reconfigured to represent another continuity Of the overall graphene particle layer 'This can greatly improve the number of effective lithium charge and discharge cycles.