Novel synthesis of 3D mesoporous FePO4 from electroflocculation of iron filings as a precursor of high-performance LiFePO4/C cathode for lithium-ion batteries

Peng, Jiawu, Hong, Xiaoting, Zhou, Qiongxiang, Hui, Kwan San ORCID: https://orcid.org/0000-0001-7089-7587 and Chen, Bin (2023) Novel synthesis of 3D mesoporous FePO4 from electroflocculation of iron filings as a precursor of high-performance LiFePO4/C cathode for lithium-ion batteries. ACS Omega, 8 (14). pp. 12707-12715. ISSN 2470-1343

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Abstract

This study presents an economic and environmentally friendly method for the synthesis of microspherical FePO4·2H2O precursors with secondary nanostructures by the electroflocculation of low-cost iron fillers in a hot solution. The morphology and crystalline shape of the precursors were adjusted by gradient co-precipitation of pH conditions. The effect of precursor structure and morphology on the electrochemical performance of the synthesized LiFePO4/C was investigated. Electrochemical analysis showed that the assembly of FePO4·2H2O submicron spherical particles from primary nanoparticles and nanorods resulted in LiFePO4/C exhibiting excellent multiplicity and cycling performance with first discharge capacities at 0.2C, 1C, 5C, and 10C of 162.8, 134.7, 85.5, and 47.7 mAh·g-1, respectively, and the capacity of LiFePO4/C was maintained at 85.5% after 300 cycles at 1C. The significant improvement in the electrochemical performance of LiFePO4/C was attributed to the enhanced Li+ diffusion rate and the crystallinity of LiFePO4/C. Thus, this work shows a new three-dimensional mesoporous FePO4 synthesized from the iron flake electroflocculation as a precursor for high-performance LiFePO4/C cathodes for lithium-ion batteries.

Item Type:	Article
Additional Information:	Funding Information: Financial support for this work was provided by Zhejiang Ruicheng New Materials Co., Ltd. and Hangzhou Chuan En Environmental Technology Co., Ltd. The authors have full power to use these grants. Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.
Uncontrolled Keywords:	chemistry(all),chemical engineering(all),sdg 7 - affordable and clean energy ,/dk/atira/pure/subjectarea/asjc/1600
Faculty \ School:	Faculty of Science > School of Engineering
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	04 Apr 2024 11:31
Last Modified:	10 Apr 2024 14:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/94814
DOI:	10.1021/acsomega.2c07838

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