期刊
APPLIED SURFACE SCIENCE
卷 597, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2022.153698
关键词
Atmospheric plasma solution synthesis; Lithium-ion batteries; FeOOH anode material; Conversion metal oxide anodes
类别
资金
- Scientific Park of St. Petersburg University [20-53-04010]
- RFBR [F21RM-104]
- BRFFR
Amorphous urchin-like FeOOH nanoparticles and their graphite composite (FeOOH/Gr) synthesized in a one-step atmospheric plasma-assisted procedure show excellent electrochemical performance as anode materials for Li-ion batteries.
Iron oxide derivatives are promising materials for large-scale use as anode materials, owing to their natural abundance, inexpensiveness, and high theoretical capacity. Here, we synthesized amorphous urchin-like FeOOH nanoparticles and their graphite composite (FeOOH/Gr) in a one-step atmospheric plasma-assisted procedure and employed it in anode materials for Li-ion batteries. The obtained FeOOH nanoparticles are up to 300 nm in diameter with a needle thickness of about (3-10) nm, while FeOOH/Gr composite consists of graphite sheets covered with FeOOH needles. The FeOOH and FeOOH/Gr materials show excellent electrochemical performance as anode materials, with 633 mAh g(-1) and 740 mAh g(-1) at 0.3 A g(-1) after 500 cycles, 353 mAh g(-1) and 542 mAh g(-1) at 1.2 A g(-1) after 2000 cycles, respectively. By analyzing the state of the material at various stages of their life, we identify electrochemical milling as the performance-boosting process responsible for the 277% specific capacity increase during charge-discharge cycling after 50 cycles.
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