rGO量对SnO_2-Fe_2O_3/rGO锂离子电池负极材料性能的影响  

Influences of rGO content on properties of SnO_2-Fe_2O_3/rGO anode for lithium ion batteries

作　　者：何声太[1,2] 高海[1,2] 吴垚震 HE Sheng-tai;GAO Hai;WU Yao-zhen(School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China;Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学,天津300387 [2]天津工业大学天津市先进纤维与储能技术重点实验室,天津300387

出　　处：《天津工业大学学报》2018年第2期67-71,共5页Journal of Tiangong University

基　　金：国家重大科学研究计划项目(2012CB933301)

摘　　要：为改善SnO_2-Fe_2O_3的电化学性能,通过一步水热法合成SnO_2-Fe_2O_3/rGO纳米复合材料,采用XRD、SEM、电化学工作站和蓝电电池测试系统,研究rGO加入量对SnO_2-Fe_2O_3/rGO复合材料的结构和电化学性能的影响.结果表明:rGO的掺入能很好地提高SnO_2-Fe_2O_3循环稳定性和倍率性能;对于SnO_2-Fe_2O_3/rGO50复合材料,在160 m A/g的电流密度下,100次循环后,放电比容量仍然保持596.9 m Ah/g,库仑效率为98%;即使在1 A/g的电流密度下,依然有366.6 m Ah/g的平均放电比容量.In order to improve the electrochemical performance of SnO2-Fe2O3,SnO2-Fe2O3/rGO nanocomposites were synthesized by one-step hydrothermal method.The effect of the amount of rGO on structure and electrochemical performances of SnO2-Fe2O3/rGO was studied by using XRD,SEM,electrochemical workstation and LAND battery test system.The results demonstrated that the incorporation of rGO can improve the cycling stability and rate performance of SnO2-Fe2O3.For SnO2-Fe2O3/rGO50 nanocomposite,at a charge-discharge current density of 160 mA/g,after 100 cycles,the discharge specific capacity keeps 596.9 mAh/g and Coulombic efficiency is 98%.Even at current density of 1 A/g,its average discharge specific capacity is still 366.6 mAh/g.

关 键 词：锂离子电池 SNO2 FE2O3 rGO 负极材料 

分 类 号：O646.21[理学—物理化学] O611.6[理学—化学]