Facile synthesis and enhanced electrochemical performance of Li 2FeSiO4/C/reduced graphene oxide nanocomposites

doi:10.1016/j.electacta.2014.04.170

	Facile synthesis and enhanced electrochemical performance of Li 2FeSiO4/C/reduced graphene oxide nanocomposites
	Wang, Xiaomei 2; Qing, Caixia 2; Zhang, Qingtang 2,3; Fan, Weifeng 3; Huang, Xiaobing 1; Yang, Baoping 2; Cui, Jinfeng 2
刊名	Electrochimica Acta
	2014-07-10
卷号	134 页码:371-376
关键词	Absorption spectroscopy Amorphous carbon Blue shift Crystalline materials Electric conductivity Electric discharges Iron compounds Lithium compounds Lithium-ion batteries Nanocomposites Silica Solid state reactions Characteristic absorption Discharge capacities Electrical conductivity Electrochemical measurements Electrochemical performance Graphene oxide nanocomposites Reduced graphene oxides Solid state reaction method
ISSN号	00134686
DOI	10.1016/j.electacta.2014.04.170
英文摘要	Li2FeSiO4/amorphous carbon/reduced graphene oxide (LFS/C/rGO) was synthesized from nano-SiO2, rGO, Li 2CO3, FeC2O4·2H2O and ammonium citrate by a facile solid-state reaction method. Electrical conductivity tests and charge-discharge voltage profiles indicate LFS/C/rGO with 20 wt.% rGO shows the highest electrical conductivity and highest discharge capacity of 191.6 mAh g-1. XRD results reveal rGO can promote the Li2FeSiO4 crystalline grain growing, especially the (210) crystal face growing. SEM results indicate a more valid conductive network is formed in LFS/C/rGO. TEM image shows the good crystalline of LFS in LFS/C/rGO composite. FT-IR spectrum indicates that 1638 cm-1 peak of rGO's C = C bonds are observed in LFS/C/rGO and all typical characteristic absorption peaks of LFS/C/rGO exhibit blue shifts compared to that of LFS/C. The electrochemical measurements illustrate that LFS/C/rGO has much better electrochemical performance than that of LFS/C. The main reason might be attributed to the more valid conductive network formed by amorphous carbon and rGO. © 2014 Elsevier Ltd. All rights reserved.
WOS研究方向	Electrochemistry
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000338387200047
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113656]
专题	实验室建设与管理处材料科学与工程学院石油化工学院图书馆
作者单位	1.School of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; 3.Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Chengdu 610041, China;
推荐引用方式 GB/T 7714	Wang, Xiaomei,Qing, Caixia,Zhang, Qingtang,et al. Facile synthesis and enhanced electrochemical performance of Li 2FeSiO4/C/reduced graphene oxide nanocomposites[J]. Electrochimica Acta,2014,134:371-376.
APA	Wang, Xiaomei.,Qing, Caixia.,Zhang, Qingtang.,Fan, Weifeng.,Huang, Xiaobing.,...&Cui, Jinfeng.(2014).Facile synthesis and enhanced electrochemical performance of Li 2FeSiO4/C/reduced graphene oxide nanocomposites.Electrochimica Acta,134,371-376.
MLA	Wang, Xiaomei,et al."Facile synthesis and enhanced electrochemical performance of Li 2FeSiO4/C/reduced graphene oxide nanocomposites".Electrochimica Acta 134(2014):371-376.