Folded graphene or more capable batteries

Repeatedly kneading graphene, a Nano material, can enhance some of its properties. Researchers at Northwestern University in the United States have found that pleated grained graphene can be used to enhance the charging performance of lithium batteries and overcome some lithium battery defects. In current battery technology, lithium requires the automatic distribution of electrodes of another material, such as graphite or Silicon, explained Jiaxing Huang, an associate professor at Northwestern University. "

"The use of additional materials 'attenuates' battery performance. Lithium is already a metal. Why not use lithium itself to do it? Because microscopic lithium fibers accumulate on the surface of the electrode when the battery is charged, and when they disperse, the branching crystals eventually lead to short circuits. Therefore, the researchers used 3D nanometer graphene materials to enhance performance and prevent the formation of branching crystals. Northwestern's research team found that the processing of nanometer graphene folds significantly increases the power storage performance of lithium batteries and prevents lithium from forming branching crystals. Improve the charging performance of lithium batteries.

Associate Professor Huang said: "Our strategy is to think backwards. Particles do not bind to each other. When combined with lithium, it still constitutes a continuous conductive material. When lithium is separated, particles can reconstruct another continuous overall graphene particle layer. "This can greatly increase the number of effective lithium charged and discharged cycles.

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