Recently, Dr. Wei Wei of the School of Chemistry and Chemical Engineering of Shangqiu Normal University has made progress in the research field of high performance lithium ion battery anode materials. Related research results have been published in the "Nanoscale".
As a new type of lithium-ion battery anode material, metal antimony has the advantages of high reversible capacity, low voltage platform, etc. It is expected to replace the graphite negative electrode material, which has caused people's continuous attention. However, during the insertion and extraction of lithium ions, the metal volume changes violently. Will cause its capacity to decay rapidly.
To solve this problem, Dr. Wei Wei used electrospinning to synthesize a ruthenium/carbon nanofiber composite material. In this material, germanium quantum dots (6 nanometers) are highly dispersed in carbon fibers with a porous structure, making ruthenium quantum dots and carbon. The material exhibits an excellent synergistic effect, achieving a perfect combination of germanium quantum dots and carbon nanofibers.
The material used as a lithium battery anode material, the first reversible capacity of 1204 mAh per milligram, after 100 cycles, the capacity is still up to 1050 milliamperes per milligram, is nearly three times the current capacity of commercial graphite cathode.
