Lithium recycling and cathode material regeneration from acid leach liquor of spent lithium-ion battery via facile co-extraction and co-precipitation processes. (June 2017)

• Record Type: Journal Article
• Authors: Yang, Yue; Xu, Shengming; He, Yinghe
• Is Part Of: Waste management. Volume 64(2017)
• Page Start: 219
• Page End: 227
• Publication Date: 2017-06
• Subjects: Spent lithium-ion battery -- Co-extraction -- Valuable metals -- Regeneration; Hazardous wastes -- Periodicals; Refuse and refuse disposal -- Periodicals; 363.728
• DOI: 10.1016/j.wasman.2017.03.018
• Languages: English
• ISSNs: 0956-053X

Abstract

Graphical abstract: Highlights: A novel process for combining Li and cathode material recycling is developed. Ni, Co and Mn are co-extracted and separated with Li. Li recovered as Li2 CO3 with the purity of 99.2% is achieved. The spherical cathode material LiNi1/3 Co1/3 Mn1/3 O2 is directly regenerated. Abstract: A novel process for extracting transition metals, recovering lithium and regenerating cathode materials based on facile co-extraction and co-precipitation processes has been developed. 100% manganese, 99% cobalt and 85% nickel are co-extracted and separated from lithium by D2EHPA in kerosene. Then, Li is recovered from the raffinate as Li2 CO3 with the purity of 99.2% by precipitation method. Finally, organic load phase is stripped with 0.5 M H2 SO4, and the cathode material LiNi1/3 Co1/3 Mn1/3 O2 is directly regenerated from stripping liquor without separating metal individually by co-precipitation method. The regenerative cathode material LiNi1/3 Co1/3 Mn1/3 O2 is miro spherical morphology without any impurities, which can meet with LiNi1/3 Co1/3 Mn1/3 O2 production standard of China and exhibits good electrochemical performance. Moreover, a waste battery management model is introduced to guarantee the material supply for spent battery recycling.