介孔碳/硫复合材料(CxSy)与室温钠硫电池

CORC > 厦门大学 > 2013年第19卷

	介孔碳/硫复合材料(CxSy)与室温钠硫电池; CMK-3/Sulfur Composite (CxSy) and Room-Temperature Na/S Battery
	赵庆 ; 胡宇翔 ; 张凯 ; 王利江 ; 陶占良 ; 陈军 ; ZHAO Qing ; HU Yu-Xiang ; ZHANG Kai ; WANG Li-Jiang ; TAO Zhan-Liang ; CHEN Jun
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10017.shtml
	2013-12-28
关键词	有序介孔碳 CMK-3/硫复合材料室温钠硫电池 ordered mesoporous carbon CMK-3/S composite room-temperature Na/S battery
英文摘要	通过熔融扩散法合成了一系列不同含硫量的有序介孔碳（CMK-3）/硫复合材料（CxSy）. 采用X射线衍射（XRD）、拉曼光谱（Raman）、比表面积测定仪（BET）、扫描电镜（SEM）、透射电镜（TEM）分析、表征和观察样品. 将复合材料组装成钠硫电池，室温下测试电化学性能. 循环伏安（CV）曲线结果表明，室温钠硫电池在1.61 V处有一个还原峰，对应于Na2Sx(x = 2 ~ 5)的形成；在1.82 V和1.95 V分别有一个氧化峰，对应于Na2Sx(x = 2 ~ 5)的分解. 50 wt%硫含量（C1S1）电极0.05C（1C=558 mA·g-1）倍率首周放电容量500 mAh·g-1，50周期循环比容量为305.6 mAh·g-1. 交流阻抗数据拟合计算其表观活化能为21.83 kJ·mol-1. 本研究可为室温钠硫电池多孔电极材料的研究提供一定的指导作用.; A series of ordered mesoporous carbon (CMK-3)/sulfur composite (CxSy) with different sulfur contents were synthesized via a melt-diffusion method. XRD, Raman, BET, SEM, and TEM techniques were used to characterize the structure and morphology of the as-prepared composite. The electrochemical performance of CMK-3/sulfur composite as the electrode of Na/S battery was tested at room temperature. Cyclic voltammograms show that one obvious reduction peak was located at about 1.61V, which is corresponding to the formation of Na2Sx (x=2~5), while two oxidation peaks were displayed at about 1.82V and 1.95V, which are belonging to the decomposition of Na2Sx (x=2~5). When the sulfur content in CMK-3/sulfur composite was 50 wt% (C1S1), the discharge capacity reached 500 mAh·g-1 under 0.05C (1C=558 mAh·g-1) rate in the first cycle and the capacity became 305.6 mAh·g?1 after 50 cycles. From the result of EIS tested at about 1.6 V under different temperatures, the activation energy was calculated to be 21.83 kJ·mol-1. This result provides the basis for further study of porous electrode materials for room-temperature Na/S battery.; 国家纳米重大科学研究计划（No. 2011CB935900）和国家自然科学基金项目（No. 21231005）资助; 作者联系地址：南开大学先进能源材料化学教育部重点实验室，天津 300071; Author's Address: Key Laboratory of Advanced Energy Materials Chemistry Ministry of Education, College of Chemistry, Nankai University, No. 94 Weijin Road, Tianjin 300071, China; 通讯作者E-mail：chenabc@nankai.edu.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.130363]
专题	2013年第19卷
推荐引用方式 GB/T 7714	赵庆,胡宇翔,张凯,等. 介孔碳/硫复合材料(CxSy)与室温钠硫电池, CMK-3/Sulfur Composite (CxSy) and Room-Temperature Na/S Battery[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10017.shtml,2013.
APA	赵庆.,胡宇翔.,张凯.,王利江.,陶占良.,...&CHEN Jun.(2013).介孔碳/硫复合材料(CxSy)与室温钠硫电池.http://electrochem.xmu.edu.cn/CN/abstract/abstract10017.shtml.
MLA	赵庆,et al."介孔碳/硫复合材料(CxSy)与室温钠硫电池".http://electrochem.xmu.edu.cn/CN/abstract/abstract10017.shtml (2013).