Regeneration of LiFePO4 from spent lithium-ion battery recycling wastewater via Fenton oxidation-selective precipitation

Yang Jiang; Changhong Peng; Wei Chen; Hao Zhou; Kanggen Zhou; Feng Zhu; Jun Jiang

doi:10.1039/d5cc01251a

Regeneration of LiFePO₄ from spent lithium-ion battery recycling wastewater via Fenton oxidation-selective precipitation

Chem Commun (Camb). 2025 Jul 10. doi: 10.1039/d5cc01251a. Online ahead of print.

Authors

Yang Jiang¹, Changhong Peng^{1

2}, Wei Chen^{1

2}, Hao Zhou¹, Kanggen Zhou^{1

2}, Feng Zhu^{1

2}, Jun Jiang^{1

2}

Affiliations

¹ School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, PR China.
² Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan, 410083, PR China.

PMID: 40637201
DOI: 10.1039/d5cc01251a

Abstract

The industrial recycling of spent lithium-ion batteries generates complex multi-contaminant streams containing oily pollutants, heavy metals, and recoverable lithium resources. Here, we propose a sustainable approach for concurrent contaminant degradation and lithium reclamation based on Fenton oxidation coupled with selective phosphate precipitation. The resulting Li₃PO₄ matches commercial battery-grade products, and the regenerated LiFePO₄ exhibits excellent properties, demonstrating promising potential for scaled-up closed-loop recycling.