Research on the synthesis of lithium iron phosphate using vivianite prepared from municipal sludge.

ABSTRACT: Sewage treatment facilities are widespread in cities throughout China, and municipal sludge, a byproduct of wastewater treatment, often leads to resource waste and secondary pollution. Concurrently, the global community faces a critical shortage of phosphorus resources. In this study, we propose an innovative resource recycling strategy to address the challenges presented by global resource scarcity and municipal sludge disposal. Specifically, we used a self-designed dual-chamber electrolytic cell to synthesise vivianite (Fe3(PO4)2·8 H2O), followed by high-temperature solid-phase synthesis of lithium iron phosphate (LiFePO4) in an atmosphere tube furnace. Using this system, we systematically investigated the effects of different molar ratios of lithium-iron-phosphorus (1:1:1, 2:1:1, 3:1:1,

SUBMITTER: Chen T 

PROVIDER: S-EPMC12381087 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature