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Efficient Separation of Aluminum Foil and CathodenMaterials from Spent Lithium-Ion Batteries Using a Low-TemperaturenMolten Salt 低温熔盐从废锂离子电池中高效分离铝箔和正极材料

Figshare Pub Date : 2019-04-12 DOI: 10.1021/acssuschemeng.8b06694.s001

Mengmeng Wang (540017), Quanyin Tan (1598788), Lili Liu (111724), Jinhui Li (625245)

{"title":"Efficient Separation of Aluminum Foil and CathodenMaterials from Spent Lithium-Ion Batteries Using a Low-TemperaturenMolten Salt","authors":"Mengmeng Wang (540017), Quanyin Tan (1598788), Lili Liu (111724), Jinhui Li (625245)","doi":"10.1021/acssuschemeng.8b06694.s001","DOIUrl":"https://doi.org/10.1021/acssuschemeng.8b06694.s001","url":null,"abstract":"Theneffective separation of aluminum (Al) foil and cathode materialsnis a critical issue for the recycling of spent lithium-ion batteriesn(LIBs). Previous studies have shown that the strong binding forcenprovided by the organic binder polyvinylidene fluoride (PVDF) betweennthe cathode materials and the Al foil of spent LIBs makes it difficultnto peel off the cathode materials from the Al foil, reducing the effectivenessnof the metal recovery process. This study reports on a low-temperaturenmolten salt technology for melting the organic binder PVDF. The resultsnshowed that an aluminum chloride-sodium chloride (AlCl<sub>3</sub>-NaCl) systema nontoxic reaction mediumcould meltnPVDF efficiently and is environmentally friendly as well, becausenof the phase transformation of molten salt caused by heat storage.nThe optimal conditions for peeling off cathode materials were a temperaturenof 160 °C, molten salt:cathode electrode mass ratio of 10:1,nand holding time of 20 min. The highest peeling off percentage ofncathode materials was 99.8 wt %. The purpose of this study was tonprovide an environmentally friendly, low-cost, and effective solutionnfor the separation of cathode materials and Al foil from spent LIBs.","PeriodicalId":522624,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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