虎门体育官方登录入口网

虎门体育官方登录入口网:标题

Cu6Sn5@SnO2-C nanocomposite with stable core/shell structure as a high reversible anode for Li-ion batteries

虎门体育官方登录入口网:作者

作者:Hu, RZ (Hu, Renzong)^[1,2 ]; Waller, GH (Waller, Gordon Henry)^[2 ]; Wang, YK (Wang, Yukun)^[1 ]; Chen, Y (Chen, Yu)^[2 ]; Yang, CH (Yang, Chenghao)^[3 ]; Zhou, WJ (Zhou, Weijia)^[3 ]; Zhu, M (Zhu, Min)^[1 ]; Liu, ML (Liu, Meilin)^[2 ]

虎门体育官方登录入口网:期刊信息

虎门体育官方登录入口网:摘要

Tin-based electrodes have attracted much attention because of their potential to offer high energy and power density while maitaining excellent cycling stability. Here we report our findings from the rational design and synthesis of a high-performance Cu6Sn5@SnO2-C electrode, a tin-based anode with a unique core/shell structure consisting of a tin-copper intermetallic (Cu6Sn5) core and a tin dioxide (SnO2)/carbon (C) shell. The hybrid structure was synthesized by a simple and cost-effective two-step process. When used as an electrode, the Cu6Sn5@SnO2-C hybrid nanocomposite demonstrated a reversible capacity of 619 mA h/g after 500 cycles between 0.05 and 3.0 V vs. Li/Li+ at 0.2 A/g, with stable capacities of similar to 300 mA h/g from the reversible conversion reaction of SnO2 in a potential range of 1.1-2.0 V. Results suggest that the maximum volume change of the Cu6Sn5@SnO2-C electrode during cycling was relatively small (12.7%) so that the Cu6Sn5 core components and the core/shell structure remained relatively stable over many cycles, leading to significantly enhanced reaction reversibility and cycling stability. (C) 2015 Elsevier Ltd. All rights reserved.

虎门体育官方登录入口网:关键词

作者关键词:Lithium ion battery; Core/shell structure; Tin dioxide; Reversibility; Tin-copper intermetallic

虎门体育官方登录入口网:作者信息

作者信息

通讯作者地址:Zhu, M (通讯作者)

S China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] S China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA   增强组织信息的名称     Georgia Institute of Technology     University System of Georgia
	[ 3 ] S China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology

电子邮件地址:memzhu@scut.edu.cn; meilin.liu@mse.gatech.edu

虎门体育官方登录入口网:出版商

ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

虎门体育官方登录入口网:类别分类