期刊
WASTE MANAGEMENT
卷 64, 期 -, 页码 214-218出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2017.03.017
关键词
Spent lithium ions batteries; Leaching; Glucose; Phosphoric acid; Recovery of Co
A hydrometallurgical leaching process has been developed for recovery of Co and Li from cathode material (LiCoO2) collected from spent LIBs using a mix solution of glucose and phosphoric acid. The spent LiCoO2 before and after leaching process are analyzed by scanning electron microscopy. A leaching rate of about 98% Co and nearly 100% Li is presented with 1.5 mol/L phosphoric acid and 0.02 mol/L glucose at 80 degrees C in about 2 h. During leaching process, glucose was oxidized into monocarboxylic acid with reduction of Co(III) to Co(II). Co in solution was recovered as Co-oxalate after leaching process. Using glucose as reductant to dissolve LiCoO2 with chelating agent of phosphoric acid is achieved here. (C) 2017 Elsevier Ltd. All rights reserved.
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