State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
J Colloid Interface Sci. 2013 Nov 1;409:38-42. doi: 10.1016/j.jcis.2013.07.053. Epub 2013 Aug 2.
A facile process was developed for the synthesis of graphene-supported TiO2 (B) nanosheets (GTBN) composite based on the hydrothermal treatment titanium (III) chloride and graphene oxide in an ethylene glycol. The morphology and microstructure of the composites were examined by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and Raman spectroscopy. The obtained GTBN show a high thermal stability and the phase transformation of TiO2 (B) to anatase can be prevented by graphene after pyrolysis of GTBN at 350°C for 2h. Furthermore, GTBN exhibited high rate performance and stability of lithium ion batteries, due to the enhanced conductivity of the electrode and accommodation to volume/strain changes during lithium insertion-extraction.
开发了一种简便的方法，通过在乙二醇中水热处理三氯化钛和氧化石墨烯，合成了基于石墨烯负载的 TiO2（B）纳米片（GTBN）复合材料。通过 X 射线衍射、X 射线光电子能谱、透射电子显微镜和拉曼光谱对复合材料的形貌和微观结构进行了研究。所得 GTBN 表现出较高的热稳定性，并且在 GTBN 在 350°C 下热解 2 小时后，石墨烯可以阻止 TiO2（B）向锐钛矿的相转变。此外，GTBN 表现出高倍率性能和锂离子电池的稳定性，这归因于电极的导电性增强以及在锂插入-提取过程中对体积/应变变化的适应性。
