锂离子电池中 TiO2-碳-rGO 复合材料的合成及优异的阳极性能。

Synthesis and superior anode performances of TiO2-carbon-rGO composites in lithium-ion batteries.

机构信息

Institute of Industrial Catalysis, College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001, PR China.

出版信息

ACS Appl Mater Interfaces. 2012 Sep 26;4(9):4776-80. doi: 10.1021/am301131h. Epub 2012 Aug 27.

DOI:10.1021/am301131h

PMID:22900618

Abstract

In this article, TiO(2)-Carbon-rGO (GCT) three-component composite material has been constructed by anchoring TiO(2) nanoparticles (NPs) encapsulated in carbon shells onto reduced graphene oxide (rGO) sheets. The structure of GCT was characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), N(2) adsorption-desorption isotherms, and transmission electron microscopy (TEM). This material shows a superior retention as the anode materials in lithium ion battery with a specific discharge capacity of 188 mA h g(-1) in the initial cycle and 158 mA h g(-1) after 100 cycles.

摘要

在本文中，通过将碳壳包裹的 TiO(2)纳米粒子（NPs）锚定在还原氧化石墨烯（rGO）片上，构建了 TiO(2)-碳-rGO（GCT）三组分复合材料。通过 X 射线衍射（XRD）、傅里叶变换红外（FTIR）光谱、拉曼光谱、X 射线光电子能谱（XPS）、N(2)吸附-脱附等温线和透射电子显微镜（TEM）对 GCT 的结构进行了表征。该材料作为锂离子电池的阳极材料具有优异的保留性能，在初始循环中具有 188 mA h g(-1)的比放电容量，在 100 次循环后为 158 mA h g(-1)。