Carbon Nanorod−MoS2 Core−Sheath Heterostructure and Its Electrochemical Properties over Various Electrochemical Windows,ChemElectroChem

当前位置： X-MOL 学术 › ChemElectroChem › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Carbon Nanorod−MoS2 Core−Sheath Heterostructure and Its Electrochemical Properties over Various Electrochemical Windows
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-03-05 , DOI: 10.1002/celc.201800096
Manman Wu _{1,

2} , Cong Liu _{1,

2} , Hui Xu ₁ , Jiandong Shen ₁ , Yang Yang ₁ , Gang Yang _{1,

2}

Affiliation

The powder of a carbon nanorod−MoS₂ core−sheath heterostructure is successfully synthesized by using a hydrothermal method. The carbon nanorod−MoS₂ material is composed of hierarchical MoS₂ nanosheets tightly grown on carbon nanorods, in which the carbon nanorods as a template effectively reduce the aggregation of the MoS₂ nanosheets. The electrochemical properties of the carbon nanorod−MoS₂ composite electrode are studied in detail, as the intercalation of lithium into MoS₂ includes two significant changes in lithiation mechanism, which occur over various electrochemical windows, such as from 1.0 to 3.0 V and from 0.001 to 3.0 V. The former mainly corresponds to the intercalation/extraction of lithium cations, and thus it presents excellent cyclic stability but low specific capacity. The later causes a big phase change in the final Li‐Sulfur battery system, and thus delivers a high specific capacity but is accompanied by serious pulverization and consequential fast capacity fading. MoS₂ supported by carbon nanorods presents a better electrochemical performance than the pure MoS₂ sample over various electrochemical windows.

中文翻译：

碳纳米棒-MoS2核-鞘异质结构及其在各种电化学窗口上的电化学性质

采用水热法成功合成了碳纳米棒-MoS ₂核-壳异质结构粉末。碳纳米棒-MoS ₂材料由紧密生长在碳纳米棒上的分层MoS ₂纳米片组成，其中碳纳米棒作为模板可有效减少MoS ₂纳米片的聚集。随着锂嵌入MoS _2中，对碳纳米棒-MoS ₂复合电极的电化学性质进行了详细研究。包括锂化机制的两个重要变化，发生在各种电化学窗口上，例如1.0至3.0 V和0.001至3.0V。前者主要对应于锂阳离子的嵌入/萃取，因此具有出色的循环稳定性，但比容量低。后者会在最终的锂硫电池系统中引起较大的相变，从而提供较高的比容量，但会伴随着严重的粉碎和随之而来的快速容量衰减。在各种电化学窗口上，由碳纳米棒支撑的MoS ₂表现出比纯MoS ₂样品更好的电化学性能。

更新日期：2018-03-05

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11