Harnessing Regenerated Graphite from Spent Lithium‐Ion Batteries to Enhance the Performance of Sulfur Cathode in Lithium‐Sulfur Batteries
Huiying Sheng,
Magdalena Graczyk‐Zajac,
Honghong Tian
et al.
Abstract:In this work, a facile hydrometallurgical approach combined with heat treatment has been adopted to recycle spent graphite from retired lithium‐ion battery cells. Graphite regenerated with 18 M H2SO4 leaching leads to a high specific surface area, significant porosity and small crystallite size. The regenerated graphite has been infiltrated with sulfur under solvothermal conditions at 160 oC. The sample containing 68 wt% of sulfur recovers a capacity of 224 mAh/g after 100 cycles. Furthermore, the electrode wi… Show more
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