Selective recovery of valuable metals from spent lithium-ion batteries – Process development and kinetics evaluation

By Wenfang Gao, Jiali Song, Hongbin Cao, Xiao Lin, Xihua Zhang, Xiaohong Zheng, Yi Zhang, Zhi Sun. 2018

279 citations recorded by the source corpus.

Abstract Recovery of valuable metals from spent lithium-ion battery (LIB) is of both environmental and economic importance. Acidic leaching usually encounters issues of low selectivity or slow kinetics with considerable secondary waste generation during further purification. In this research, a closed-loop process with improved leaching selectivity for recycling of spent LiNixCoyMn1-x-yO2 battery using weak acidic leachant was demonstrated. To obtain optimal conditions of the leaching process, the effects of acid concentration, solid to liquid (S/L) ratio, temperature and reductant content were systematically investigated. Almost all Co, Li, Mn and Ni could be effectively recovered into the solution while Al remained in the residue as metallic form, after one-step leaching. The role of reductant during leaching was further evaluated which was found to be critical for the leaching kinetics. It is clear that the addition of reductant could alter the rate-controlling step of leaching from the ion diffusion in the residue layer to the surface chemical reactions. With high selectivity against impurities, this research proposed and verified a process to recover high purity Li2CO3 from the cathode scrap of LIBs, and more than 90% of the global recovery rate of valuable metals can be achieved.

Subfields: Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/411c99401b9f32393472203193600dfae9bf455a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. Xiao Lin
2. Hongbin Cao

In Industrial and Manufacturing Engineering

1. Xiao Lin
2. Hongbin Cao
3. Yi He
4. Xiaohong Zheng
5. Yi Zhang
6. Zhi Sun
7. Zewen Zhu

In Mechanical Engineering

1. Xiao Lin
2. Hongbin Cao
3. Yi He
4. Xiaohong Zheng
5. Yi Zhang
6. Zhi Sun
7. Zewen Zhu

Citations in the corpus

• A Mini-Review on Metal Recycling from Spent Lithium Ion Batteries (2018, methodology): “Thus, environmentally friendly organic acids have been used as the leaching agents for metal recovery from spent LIBs; these organic acids include ascorbic acid [24,58–60], citric acid [25,46,60–62], oxalic acid [63,64], formic acid [65], acetic acid [46,66], succinic acid [67], tartaric acid [68], ”