Issue 49, 2016, Issue in Progress
From the journal:

RSC Advances

Optimized Li and Fe recovery from spent lithium-ion batteries via a solution-precipitation method

Rujuan Zheng,ab   Li Zhao,a   Wenhui Wang,a   Yuanlong Liu,a   Quanxin Ma,a   Deying Mu,a   Ruhong Lia  and  Changsong Dai*a  

* Corresponding authors

a School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China
E-mail: changsd@hit.edu.cn

b College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China

Abstract

A new process is optimized and presented for the recovery and regeneration of LiFePO4 from spent lithium-ion batteries (LIBs). The recycling process reduces the cost and secondary pollution caused by complicated separation and purification processes in spent LIB recycling. Amorphous FePO4·2H2O was recovered by a dissolution-precipitation method from spent LiFePO4 batteries. The effects of different surfactants (i.e. CTAB, SDS and PEG), which were added to the solution on the recovered FePO4·2H2O, were investigated. Li2CO3 was precipitated by adding Na2CO3 to the filtrate. Then the LiFePO4/C material was synthesized by a carbon thermal reduction method using recycled FePO4·2H2O and Li2CO3 as the Fe, P, and Li sources. The as-prepared LiFePO4/C shows comparable electrochemical performance to that of commercial equivalents.

Graphical abstract: Optimized Li and Fe recovery from spent lithium-ion batteries via a solution-precipitation method

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Article information

DOI
https://doi.org/10.1039/C6RA05477C
Article type
Paper
Submitted
01 Mar 2016
Accepted
14 Apr 2016
First published
19 Apr 2016

RSC Adv., 2016,6, 43613-43625

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Optimized Li and Fe recovery from spent lithium-ion batteries via a solution-precipitation method

R. Zheng, L. Zhao, W. Wang, Y. Liu, Q. Ma, D. Mu, R. Li and C. Dai, RSC Adv., 2016, 6, 43613 DOI: 10.1039/C6RA05477C

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