MoS2/B-doped graphene for electrochemical hydrogen evolution and lithium storage

被引：0

作者：

Ren W.-Y. ^{[1
]}

Hou S.-C. ^{[1
]}

Jiang X.-N. ^{[1
]}

Chen W.-X. ^{[1
]}

机构：

[1] Department of Chemistry, Zhejiang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 08期

关键词：

Electrocatalyst; Electrochemical lithium storage; Graphene; Hydrogen evolution reaction (HER); Molybdenum disulfide (MoS[!sub]2[!/sub]);

D O I：

10.3785/j.issn.1008-973X.2020.08.023

中图分类号：

学科分类号：

摘要：

MoS2/B-doped graphene composites (MoS2/BG) were prepared by one-step hydrothermal method, in order to develop high-efficiency and low-cost electrocatalyst for hydrogen evolution reaction (HER) and high-performance lithium storage electrode material. Results show that the poor-stacked MoS2nanosheets with more disordered structures and expanded interlayer distance are well dispersed on the surface of B-doped graphene sheets. MoS2/BG composite shows high electrocatalytic activity with low Tafel slope (46.3 mV/dec) as HER electrocatalyst. MoS2/BG composite shows excellent lithium storage performance as a lithium storage electrode material. It can exhibit a reversible capacity as high as 1 205 mA·h/g with stable cycle performance and significantly enhanced high rate capability. The excellent electrochemical performance of MoS2/BG composite is due to the fact that boron doping modifies the electronic and surface properties of graphene, and the poor-stacked MoS2layers with more disordered structures are uniformly dispersed on the surface of B-doped graphene, which not only increases the active sites for HER and electrochemical lithium storage capability, but also reduces the electron transfer impedance of the electrode reaction, leading to the enhancement of electrode reaction kinetics. Copyright ©2018 Journal of Zhejiang University (Engineering Science). All rights reserved.

引用

页码：1628 / 1636

页数：8

共 21 条

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