Graphite recycling from spent lithium-ion batteries for fabrication of high-performance aluminum-ion batteries

Efficient extraction of electrode components from recycled lithium-ion batteries(LIBs)and their highvalue applications are critical for the sustainable and ecofriendly utilization of resources.This work demonstrates a novel approach to stripping graphite anodes embedded with Li^(+)from spent LIBs directly in anhydrous ethanol which can be utilized as high efficiency cathodes for aluminum-ion batteries(AIBs).Recycled graphite(RG)with foam morphology and crystal structure defects was obtained under the action of ultrasonic peeling and gas generation reaction between residual lithium-graphite interlayer compound and ethanol.The inherent open structure of RG facilitates the intercalation/deintercalation of chloralum anions(AlCl_(4)^(-))and enhances its AIB cathode performance.The electrochemical measurements revea that the RG cathode has a specific capacity of 123 m Ah·g^(-1)at a current of 5 A·g^(-1),which is 1.55 times higher than tha of unprocessed natural graphite and 1.25 times higher than that of commercial artificial graphite.Additionally,the RG cathode demonstrated remarkable stability,retaining its high particular capacity of 138.15 mAh·g^(-1)even through2000 times at 10 A·g^(-1)in a low-cost electrolyte consisting of an ionic liquid/urea/AlCl_(3)mixture.This work offers a novel approach to reusing of graphite anode waste materials from LIBs.

Quasi-two-dimensional bismuth oxychalcogenide nanoflakes as novel anode for potassium-ion batteries

Potassium-ion batteries(PlBs)are considered as the promising alternative of lithium-ion batteries,due to their abundance natural resources,high cost-effectiveness,and similar working principle.With the development of PIBs,due to the larger ionic radius of potassium compared to that of lithium,the urgent demand of suitable anode materials with steady structure and fast carrier diffusion is of primary importance.