LiFePO4/rGO composite prepared from the leaching liquor of jarosite residue as a cathode material for lithium-ion batteries

作者：Xu, Wenhan; Li, Yanwei^*; Yao, Jinhuan^*; Xiao, Shunhua; Liu, Botian^*

来源：Journal of Alloys and Compounds, 2023, 952: 170105.

DOI：10.1016/j.jallcom.2023.170105

• LiFePO4
• Cathode materials
• Lithium-ion batteries
• Jarosite residue
• Leaching liquor

The effective utilization of jarosite residue is of great significance for environmental protection and alleviates the pressure on resources. Herein, a LiFePO4/rGO composite is synthesized by selective precipitation and carbothermal reduction method using the leaching liquor of jarosite residue as the Fe source. In this composite, LiFePO4 nanoparticles are uniformly anchored on the surface of rGO sheets. As a cathode material for lithium-ion batteries (LIBs), the LiFePO4/rGO composite exhibits outstanding cycling stability (106.8 mA h g(-1) after 1000 cycles at 1 C), excellent rate capability (91.5 mA h g(-1) at 10 C), and fast kinetics. Furthermore, the LiFePO4/rGO composite still shows a good lithium storage property (76.9 mA h g(-1) after 200 cycles at 1 C) in a LiFePO4/rGO//graphite full cell. The present work realizes the high-value utilization of the Fe resources in jarosite residue and the low-cost preparation of LiFePO4 cathode material for LIBs.

• 单位
  桂林理工大学