Use of glucose as reductant to recover Co from spent lithium ions batteries

Qi Meng; Yingjie Zhang; Peng Dong

doi:10.1016/j.wasman.2017.03.017

Use of glucose as reductant to recover Co from spent lithium ions batteries

Waste Manag. 2017 Jun:64:214-218. doi: 10.1016/j.wasman.2017.03.017. Epub 2017 Mar 18.

Authors

Qi Meng¹, Yingjie Zhang¹, Peng Dong²

Affiliations

¹ National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
² National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China. Electronic address: dongpeng2001@126.com.

PMID: 28325708
DOI: 10.1016/j.wasman.2017.03.017

Abstract

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 1.5mol/L phosphoric acid and 0.02mol/L glucose at 80°C in about 2h. 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.

Keywords: Glucose; Leaching; Phosphoric acid; Recovery of Co; Spent lithium ions batteries.

MeSH terms

Electric Power Supplies*
Glucose*
Ions
Lithium*
Recycling
Reducing Agents

Substances

Ions
Reducing Agents
Lithium
Glucose