4.7 Article

Hierarchical MnV2O4 double-layer hollow sandwich nanosheets confined by N-doped carbon layer as anode for high performance lithium-ion batteries

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 607, 期 -, 页码 538-545

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.09.017

关键词

MnV2O4/NC; Double-layer hollow sandwich nanosheets; Nitrogen-doped carbon layer; Lithium ion batteries

资金

  1. Natural Science Foundation of Heilongjiang Province [B2018004]

向作者/读者索取更多资源

MnV2O4/NC, a novel double-layer hollow sandwich nanostructure synthesized efficiently in 5 minutes by microwave-assisted and in-situ pyrolysis coated polydopamine, shows superior performance as an anode for lithium-ion batteries with high specific capacity and outstanding cycling stability, attributed to its unique structure and coated carbon layer.
Binary transition metal oxides, especially vanadate metal oxides, are highly desirable for lithium-ion batteries (LIBs) anode materials due to their low-budget and high theoretical lithium storage capacity. However, low conductivity and poor cycle stability caused by volume changes during charge and discharge limit their grid-scale applications. Herein, a novel spinel MnV2O4 double-layer hollow sandwich nanosheets enclosed in N-doped porous carbon layer (MnV2O4/NC) was efficiently synthesized in 5 min by microwave-assisted and in-situ pyrolysis the coated polydopamine. MnV2O4/NC shows the superior performance as anode for LIBs with a specific capacities of 760 mA h g(-1) at 1000 mA g(-1) and outstanding of cycling stability with a specific capacities of 525.5 mA h g(-1) after 1000 cycles even at 5000 mA g(-1), respectively, which due to its unique double-layer hollow sandwich microstructure, mixed lithium storage mechanism and in-situ coating of nitrogen-doped carbon layer. (C) 2021 Published by Elsevier Inc.

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