Preparation and lithium storage properties of Mo<sub>2</sub>N quantum dots@nitrogen-doped graphene composite

WANG Lixia; ZHANG Zhenhua; LI Lei; ZHANG Linsen; FANG Hua; SONG Yanhua; LI Xiaofeng

doi:10.11949/0438-1157.20200618

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Preparation and lithium storage properties of Mo₂N quantum dots@nitrogen-doped graphene composite

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- Preparation and lithium storage properties of Mo₂N quantum dots@nitrogen-doped graphene composite
- CIESC Journal Vol. 71, Issue 12, Pages: 5854-5862(2020)
- 作者机构：
  
  1.郑州轻工业大学材料与化学工程学院，河南郑州 450001
  2.郑州轻工业大学陶瓷材料研究中心，河南郑州 450001
  3.郑州市绿色化学电源重点实验室，河南郑州 450001
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200618
  CLC： TQ 152
- Received：20 May 2020，
  
  Revised：2020-07-09，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
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王利霞, 张振华, 李雷, 张林森, 方华, 宋延华, 李晓峰. Mo₂N量子点@N-掺杂石墨烯复合材料的制备及储锂性能[J]. 化工学报, 2020, 71(12): 5854-5862 DOI: 10.11949/0438-1157.20200618.

WANG Lixia, ZHANG Zhenhua, LI Lei, ZHANG Linsen, FANG Hua, SONG Yanhua, LI Xiaofeng. Preparation and lithium storage properties of Mo₂N quantum dots@nitrogen-doped graphene composite[J]. CIESC Journal, 2020, 71(12): 5854-5862 DOI: 10.11949/0438-1157.20200618.
王利霞, 张振华, 李雷, 张林森, 方华, 宋延华, 李晓峰. Mo₂N量子点@N-掺杂石墨烯复合材料的制备及储锂性能[J]. 化工学报, 2020, 71(12): 5854-5862 DOI: 10.11949/0438-1157.20200618. DOI：

WANG Lixia, ZHANG Zhenhua, LI Lei, ZHANG Linsen, FANG Hua, SONG Yanhua, LI Xiaofeng. Preparation and lithium storage properties of Mo₂N quantum dots@nitrogen-doped graphene composite[J]. CIESC Journal, 2020, 71(12): 5854-5862 DOI: 10.11949/0438-1157.20200618. DOI：

摘要

为改善钼氮化物的电化学储锂性能，以钼酸铵、六次甲基四胺及氧化石墨烯（GO）为原料，通过水热、冷冻干燥及在H

混合气中热处理，制备了Mo

N量子点@氮掺杂石墨烯复合材料（Mo

N-QDs@Ngs），并探究了GO复合量对电化学储锂性能的影响。透射电子显微镜（TEM）测试结果表明：制备的Mo

N量子点尺寸约为2~5 nm，Mo

N量子点均匀地分布在氮掺杂石墨烯的表面。电化学测试结果表明：当GO复合量为30%时（Mo

N-QDs@Ngs-30），制备的复合材料具有最佳的电化学储锂性能，其在0.1 A·g

-1

的电流密度下具有699 mA·h·g

-1

的比容量，在2 A·g

-1

下仍具有286 mA·h·g

-1

的比容量。

Abstract

To improve the electrochemical lithium storage performance of molybdenum nitrides

N quantum dots@nitrogen-doped graphene oxide sponge (Mo

N-QDs@Ngs) was prepared by hydrothermal reaction

freeze-drying and calcination in H

mixture with ammonium molybdate ((NH

)Mo

·4H

hexamethylenetetramine (C

) and graphene oxide (GO) as raw materials. The effect of GO content

on the electrochemical lithium storage performance was investigated. The transmission electron microscope (TEM) results show that the size of the prepared Mo

N quantum dots is about 2—5 nm

and the Mo

N quantum dots are uniformly distributed on the surface of nitrogen-doped graphene. The electrochemical test results show that when the GO content is 30%

the prepared Mo

N-QDs@Ngs-30 has the best electrochemical lithium storage performance

which has 699 mA·h·g

-1

specific capacity at the current density of 0.1 A·g

-1

and has 286 mA·h·g

-1

specific capacity even at the current density of 2 A·g

-1

关键词

Keywords

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⁰

Preparation and lithium storage properties of Mo2N quantum dots@nitrogen-doped graphene composite

DOI：10.11949/0438-1157.20200618

摘要

Abstract

关键词

Keywords

references

Preparation and lithium storage properties of Mo₂N quantum dots@nitrogen-doped graphene composite