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兰州大学机构库  > 物理科学与技术学院  > 期刊论文
题名: Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2 conversion and much enhanced coulombic efficiency for lithium-ion batteries
其他题名: Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2conversion and much enhanced coulombic efficiency for lithium-ion batteries
作者: Xie, WH; Gu, LL; Xia, FY; Liu, BL; Hou, XY; Wang, Q; Liu, DQ; He, DY(贺德衍)
收录类别: SCIE ; EI
出版日期: 2016-09-30
刊名: JOURNAL OF POWER SOURCES
卷号: 327, 页码:21-28
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: Despite their potential application in lithium-ion battery electrodes, one apparent disadvantage for SnO2-based materials is that the electrodes suffer low coulombic efficiency especially for the initial cycle, which originates from the irreversible conversion of SnO2 to Sn, the formation of solid electrolyte interphase and the other possible side reactions. Here we design a novel nanofiber structure in which SnO2 nanoparticles are well separated and confined by inner porous carbon framework and then hooped by outer carbon shell. The resultant SnO2/voids@C nanofibers electrode displays not only a high reversible capacity of 986 mAh g(-1) at 200 mA g(-1) after 200 cycles, but also a high initial coulombic efficiency of 73.5%. It has been shown that such a rational design can efficiently reduce the side reactions and promote the reversible conversion of Sn to SnO2 for both half and full cells. (C) 2016 Elsevier B.V. All rights reserved.
关键词: Inner voids ; SnO2@C nanofibers ; Reversible Sn/SnO2 conversion ; Lithium-ion batteries ; Full cells
作者部门: [He, Deyan] Lanzhou Univ, Minist Educ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China ; Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
通讯作者: He, DY (reprint author), Lanzhou Univ, Minist Educ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China.
学科分类: Chemistry; Electrochemistry; Energy & Fuels; Materials Science
文章类型: Article
所属项目编号: Foundation for Young Scientists of Gansu Province of China [1506RJYA214] ; National Science Foundation of China [61404064, 11179038]
所属项目名称: 国家自然科学基金项目 ; 甘肃省青年科技基金计划
项目资助者: NSFC ; GSSTD
语种: 英语
DOI: 10.1016/j.jpowsour.2016.07.030
ISSN号: 0378-7753
WOS记录号: WOS:000383003600003
EI记录号: 20162902610201
IR记录号: WOS:000383003600003
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/181687
Appears in Collections:物理科学与技术学院_期刊论文

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Recommended Citation:
Xie, WH,Gu, LL,Xia, FY,et al. Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2 conversion and much enhanced coulombic efficiency for lithium-ion batteries[J]. JOURNAL OF POWER SOURCES,2016,327:21-28.
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