焦钒酸锰酸浸液水热制备MnV<sub>2</sub>O<sub>6</sub>纳米带及其储锂性能研究

doi:10.11896/cldb.24030029

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Abstract Monoclinic manganese vanadate (MnV₂O₆) has higher conductivity and lower charge transfer activation energy than other manganese vanadate compounds, and has become one of the more promising anode materials for lithium ion batteries. In this work, MnV₂O₆ nanobelts were obtained by hydrothermal reaction using manganese pyrovanadate (Mn₂V₂O₇) acid leaching solution as raw material. The effects of vanadium concentration and hydrothermal temperature on vanadium conversion rate in hydrothermal process were studied. The phase, morphology and electrochemical properties of MnV₂O₆ nanobelts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical workstation. The results show that the vanadium conversion rate increases with the increase of vanadium concentration, and increases first and then decreases with the increase of hydrothermal temperature. The critical point is 180 ℃. The prepared MnV₂O₆ is composed of monoclinic nanobelts with a width of about 200 nm, a thickness of 15—30 nm, and a length of 3—5 μm. It has excellent rate performance and cycle life. After 200 cycles at 1C(1C=847 mA·g^-1), it still maintains a high reversible capacity of 763.4 mA·h·g^-1, showing good electrochemical performance.

Key words： manganese pyrovanadate leaching solution hydrothermal synthesis MnV₂O₆ nanobelts electrochemical characteristic

Published: Online: 2025-05-29

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TB34

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	Articles by authors
	XIAO Hao
	WEN Jing
	LI Feifei
	JIANG Tao

Cite this article:

XIAO Hao,WEN Jing,LI Feifei, et al. Research on Hydrothermal Synthesis of MnV₂O₆ Nanobelts from Pyrovanadate Manganese Acid Leaching Solution and Its Lithium Storage Performance[J]. Materials Reports, 2025, 39(11): 24030029-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24030029 OR https://www.mater-rep.com/EN/Y2025/V39/I11/24030029

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