Leaching kinetics and interface reaction of LiNi0.6Co0.2Mn0.2O2 materials from spent LIBs using GKB as reductant

Bowen Zhu; Yingjie Zhang; Yuling Zou; Zelong Yang; Bao Zhang; Yan Zhao; Mingyu Zhang; Qi Meng; Peng Dong

doi:10.1016/j.jenvman.2021.113710

Leaching kinetics and interface reaction of LiNi_0.6Co_0.2Mn_0.2O₂ materials from spent LIBs using GKB as reductant

J Environ Manage. 2021 Dec 15:300:113710. doi: 10.1016/j.jenvman.2021.113710. Epub 2021 Sep 9.

Authors

Bowen Zhu¹, Yingjie Zhang¹, Yuling Zou¹, Zelong Yang¹, Bao Zhang¹, Yan Zhao², Mingyu Zhang³, Qi Meng⁴, Peng Dong¹

Affiliations

¹ National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China.
² National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Kunming University of Science and Technology, Kunming, 650093, China.
³ Yunnan Provincial Energy Research Institute Co. Ltd., Kunming, 650599, China.
⁴ National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China. Electronic address: mengqi315117@126.com.

PMID: 34509811
DOI: 10.1016/j.jenvman.2021.113710

Abstract

The application of green reductant is signification to recycling of cathode materials from spent lithium ions batteries. Here, ginkgo biloba was developed for enhancing leaching of spent LiNi_0.6Co_0.2Mn_0.2O₂ materials with systematically analysis of leaching kinetics and interface reaction. The leaching efficiencies of Ni, Mn, Co, and Li reach respectively 98.65 %, 98.25 %, 98.41 % and 99.99 % under optimal condition of 1.8 mol/L H₂SO₄ concentration, 9 g/L ginkgo biloba, 80 °C leaching temperature, 40 min time and 15 g/L pulp density. The apparent activation energies for leaching of Ni, Co, Mn and Li determined as 74.63, 79.33, 73.14 and 23.43 kJ/mol, respectively, indicates that the leaching process was controlled by the surface chemical reaction during the leaching process. Meanwhile, the regenerated material with better electrochemical performance was obtained by co-precipitation and calcination from leachate. Finally, the process is environmental friendly and economical feasible for recycling of spent lithium-ion batteries.

Keywords: Ginkgo biloba; Interface reaction; Leaching kinetics; Recycling; Spent lithium ions battery.

MeSH terms

Electric Power Supplies
Kinetics
Lithium*
Recycling
Reducing Agents*

Substances

Reducing Agents
Lithium