Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 66, Issue -, Pages 86-93Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2018.05.004
Keywords
Spent lithium-ion batteries; Leaching; Grape seed; Kinetics; XPS
Funding
- National Natural Science Foundation of China [51764029]
- Academic Newcomer Award of Yunnan Province for Postgraduate
- Analysis and Measurement Foundation of the Kunming University of Science and Technology [2018P20151102001]
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The grape seed was novelly used as reductant for leaching of spent LiCoO2 material, which is idea of waste + waste -> resources. About 92% Co and 99% Li could be leached under the optimized conditions of grape seed 0.6 g/g, malic acid 1.5 mol/L, 180 min, 80 degrees C, and slurry density 20 g/L. The catechin, EC and EGCG contained in grape seed could be employed as efficient reductants during leaching. The leaching process is controlled by combination of surface chemical reaction and diffusion with apparent activation energy of 11.96 kJ/mol, which is related to the form of Co(OH)(3). (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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