高等学校化学学报2021，Vol.42Issue(2)：662-670,9.DOI:10.7503/cjcu20200609
层状钒青铜纳米片的制备及其锂离子电池阳极材料性能
Preparation of Layered(NH4)2V6O16·H2O Nanosheets as an Anode for Li-ion Batteries
摘要
Abstract
Vanadium pentoxide(V2O5)nanomaterials have been extensively investigated as promising elec?trode materials for rechargeable batteries due to its high theoretical specific capacity. Herein,we report the preparation of layered(NH4)2V6O16·H2O nanosheets by intercalation of commercial V2O5 nanoparticles with am?monium ions and water molecules in aqueous solution at room temperature. The as-prepared(NH4)2V6O16·H2O nanosheets have a size of 2—10 μm and thickness of 50—250 nm. Importantly,when used as an anode mate-rial for Li-ion batteries(LIBs),the (NH4)2V6O16·H2O nanosheets exhibit much enhanced performances in comparison with commercial V2O5 nanoparticles,including large reversible discharge capacity(1148 mA·h/g at 0.1 A/g),excellent cycling performance(a high capacity of 1002 mA·h/g at 0.1 A/g after 70 cycles)and high rate capability(reversible capabilities of 1070 mA·h/g at 0.1 A/g). The results demonstrate that the (NH4)2V6O16·H2O nanosheets can be used as an excellent anode material for LIBs,which may be also promising for other rechargeable batteries,such as Na-ion batteries and Zn-ion batteries.关键词
五氧化二钒/钒青铜纳米片/插层/锂离子电池Key words
Vanadium pentoxide/(NH4)2V6O16·H2O Nanosheets/Intercalation/Lithium-ion battery分类
化学化工引用本文复制引用
周战,马录芳,谭超良..层状钒青铜纳米片的制备及其锂离子电池阳极材料性能[J].高等学校化学学报,2021,42(2):662-670,9.基金项目
中原科技创新领军人才支持计划(批准号:204200510001)和香港城市大学启动基金项目(批准号:9610495)资助.This work is supported by the Project of Central Plains Science and Technology Innovation Leading Talents of Henan Province,China(No. 204200510001),and the Funding Support from the Start-Up Grant from City University of Hong Kong,China(No. 9610495). （批准号:204200510001）
