氧化石墨烯添加量对Bi2S3/rGO复合材料 储锂性能的影响探究

氧化石墨烯添加量对Bi₂S₃/rGO复合材料储锂性能的影响探究

刘婷婷¹，丁炜楠¹，田  凯²，倪  敏¹，孔  佳¹，赵丹青¹，

张占恩¹，顾海东^1*

（1. 苏州科技大学江苏省环境科学与工程重点实验室，环境科学与工程学院，江苏苏州215000；

2. 苏州大学能源学院，江苏 苏州 215000）

摘  要   本文采用简单超声法成功制备了硫化铋纳米颗粒与石墨烯（Bi₂S₃/rGO）复合材料，并探究前驱体氧化石墨烯（GO）添加量对Bi₂S₃/rGO复合材料储锂性能影响。利用扫描电镜(SEM)、透射电镜（TEM）、能谱（EDS）、X-射线单晶衍射(XRD)、拉曼光谱(Raman)等测试技术对其微观形貌、元素分布及物相结构进行表征，并利用电化学工作站和电池测试系统对其电化学性能进行测试。结果表明，添加20 mg GO制备出的复合材料，Bi₂S₃纳米颗粒在石墨烯片层中分布均匀，周围无散落，作为锂离子电池负极材料比容量较高，循环与倍率稳定性较优。

关键词   硫化铋/石墨烯复合材料；负极材料；锂离子电池；电化学性能

中图分类号：TB333；TM911；TG115.21⁺5.3    

文献标识码：A    doi:10.3969/j.issn.1000-6281.2020.01.003

Influences of GO content on properties of Bi₂S₃/rGO anode for Li-ion batteries

LIU Ting-ting¹，DING Wei-nan¹，TIAN Kai²，NI Min¹，KONG Jia¹，ZHAO Dan-qing¹，

ZHANG Zhan-en¹，GU Hai-dong^1*

(1. School of Environmental Science and Engineering，Jiangsu Key Laboratory of Environmental Science and Engineering，Suzhou University of Science and Technology，Suzhou Jiangsu 215000；2. College of Energy, Soochow University, Suzhou Jiangsu 215000，China)

Abstract  In this paper, the reductive oxidation graphene with bismuth sulfide nanoparticles (Bi₂S₃/rGO) had been successful synthesized via a simple ultrasonic method at room temperature, and the effect of the precursor GO on microstructure and electrochemical performance of Bi₂S₃/rGO were explored. The morphology and microstructure of samples were investigated by scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive spectroscopy (EDS), X-ray single crystal diffractometer (XRD) and Raman spectra (Raman). The electrochemical performances of the samples were investigated by electrochemical workstation and battery test system. The results showed that the composite materials prepared by Bi₂S₃ nanoparticles with the addition of 20 mg GO were evenly distributed in the graphene sheet layer without scattering around. As an anode material of lithium ion battery, whichhad a high specific capacity and excellent cycling and rate stability.

Keywords   Bi₂S₃/rGO nanocomposite；anode；li-ion battery；electrochemical performance

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