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

被引：0

作者：

Wang L. ^{[1
,2
,3
]}

Zhang Z. ^{[1
]}

Li L. ^{[1
]}

Zhang L. ^{[1
,2
,3
]}

Fang H. ^{[1
,2
,3
]}

Song Y. ^{[1
,3
]}

Li X. ^{[1
,3
]}

机构：

[1] School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou

[2] Ceramic Materials Research Center, Zhengzhou University of Light Industry, Zhengzhou

[3] Zhengzhou Key Laboratory of Green Power, Zhengzhou

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 12期

关键词：

Electrochemistry; Lithium-ion battery; Mo[!sub]2[!/sub]N quantum dots; Nanomaterials; Nanostructure; Nitroden-doped graphene oxide;

D O I：

10.11949/0438-1157.20200618

中图分类号：

学科分类号：

摘要：

To improve the electrochemical lithium storage performance of molybdenum nitrides, Mo2N quantum dots@nitrogen-doped graphene oxide sponge (Mo2N-QDs@Ngs) was prepared by hydrothermal reaction, freeze-drying and calcination in H2/N2 mixture with ammonium molybdate ((NH4)Mo7O24•4H2O), hexamethylenetetramine (C6H12N4) 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 Mo2N quantum dots is about 2-5 nm, and the Mo2N 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 Mo2N-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. © 2020, Editorial Board of CIESC Journal. All right reserved.

引用

页码：5854 / 5862

页数：8

共 31 条

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