Γ-MnS/reduced graphene oxide nanocomposites with great lithium storage capacity
Γ-MnS/reduced graphene oxide nanocomposites with great lithium storage capacity
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具有高储锂容量的γ-MnS/还原氧化石墨烯纳米复合材料
DOI：
10.1016/j.ssi.2015.06.005
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发表时间：
2015-10-01
影响因子：
3.2
通讯作者：
Ding, JianNing
中科院分区：
文献类型：
--
作者：
Ren, YuRong;Wang, JiaWei;Ding, JianNing
本文主要介绍了γ-MnS/rGO纳米复合材料的制备、表征及电化学性能研究。采用一锅水热法制备了γ-MnS/rGO电极。L-半胱氨酸用作硫源以及将GO还原成rGO。采用XRD、SEM、TEM、FTIR和TG等手段对材料进行了表征。分散在还原氧化石墨烯表面上的γ-MnS颗粒具有约100 μ m的平均直径。37纳米。γ-MnS/rGO纳米复合材料作为锂离子电池负极材料，其比容量稳定在约1000 mAh/g，是一种性能优异的锂离子电池负极材料。600 mAh/g，在200 inA/g的电流密度下进行100次循环，并提供了很好的倍率性能（可逆容量约为200 mAh/g）。320 mAh/g）。所有这些电化学性能都大于原始MnS的电化学性能。(C)2015 Elsevier B. V.版权所有。
The synthesis, characterization and electrochemical study of gamma-MnS/rGO nanocomposites are described in this work. A one-pot hydro-thermal method is employed to fabricate gamma-MnS/rGO electrodes. L-cysteine is used as sulfur source as well as the reduction of GO to rGO. The resulting materials are characterized by XRD, SEM, TEM, FTIR and TG. Gamma-MnS particles dispersing on the surface of reduced graphene oxide have the average diameter of ca. 37 nm. As a splendid anode material for lithium-ion batteries, gamma-MnS/rGO nanocomposites achieve a stable specific capacity of ca. 600 mAh/g at a current density of 200 inA/g for 100 cycles and deliver a great rate performance (a reversible capacity of ca. 320 mAh/g even at a high current density of 1000 mA/g). All of these electrochemical performances are greater than those of the pristine MnS. (C) 2015 Elsevier B.V. All rights reserved.