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...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.展开更多
基金financially supported by the National Natural Science Foundation of China(No.52202338)。
文摘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.
