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Single-wall carbon nanotube network enabled ultrahigh sulfur-content electrodes for high-performance lithium-sulfur batteries
Fang, Ruopian; Li, Guoxian; Zhao, Shiyong; Yin, Lichang; Du, Kui; Hou, Pengxiang; Wang, Shaogang; Cheng, Hui-Ming; Liu, Chang; Li, Feng; Liu, C; Li, F (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2017-12-01
发表期刊ELSEVIER SCIENCE BV
ISSN2211-2855
卷号42页码:205-214
摘要Lithium-sulfur (Li-S) batteries are among the most promising candidates for the next-generation energy storage systems. However, challenges regarding the limited sulfur content and areal sulfur loading in the cathode lead to a low areal capacity that cannot even outperform state-of-the-art lithium-ion batteries, which greatly offsets the high-energy advantage of Li-S batteries and further hinders their practical use. Here, we theoretically indicated that the electronic conduction efficiency of the sulfur host nanomaterial plays a crucial role in determining the sulfur content, and a highly efficient single-wall carbon nanotube (SWCNT) conductive network was constructed for our proof-of-concept studies, resulting in an unprecedentedly high sulfur content up to 95 wt%. The interwoven SWCNTs not only provide abundant paths for electron and lithium ion transport, but also facilitate polysulfides trapping during sulfur conversion reactions. As a result, a high areal capacity of 8.63 mA h cm(-2) was obtained with a high areal sulfur loading of 7.2 mg cm(-2), much higher than that of lithium-ion batteries (4 mA h cm(-2)). Our approach demonstrates a new design concept for the electrode materials of high-energy-density lithium-sulfur batteries and could possibly be extended to other electrochemical energy storage systems.; Lithium-sulfur (Li-S) batteries are among the most promising candidates for the next-generation energy storage systems. However, challenges regarding the limited sulfur content and areal sulfur loading in the cathode lead to a low areal capacity that cannot even outperform state-of-the-art lithium-ion batteries, which greatly offsets the high-energy advantage of Li-S batteries and further hinders their practical use. Here, we theoretically indicated that the electronic conduction efficiency of the sulfur host nanomaterial plays a crucial role in determining the sulfur content, and a highly efficient single-wall carbon nanotube (SWCNT) conductive network was constructed for our proof-of-concept studies, resulting in an unprecedentedly high sulfur content up to 95 wt%. The interwoven SWCNTs not only provide abundant paths for electron and lithium ion transport, but also facilitate polysulfides trapping during sulfur conversion reactions. As a result, a high areal capacity of 8.63 mA h cm(-2) was obtained with a high areal sulfur loading of 7.2 mg cm(-2), much higher than that of lithium-ion batteries (4 mA h cm(-2)). Our approach demonstrates a new design concept for the electrode materials of high-energy-density lithium-sulfur batteries and could possibly be extended to other electrochemical energy storage systems.
部门归属[fang, ruopian ; li, guoxian ; zhao, shiyong ; yin, lichang ; du, kui ; hou, pengxiang ; wang, shaogang ; cheng, hui-ming ; liu, chang ; li, feng] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [fang, ruopian ; li, guoxian] univ chinese acad sci, beijing 100049, peoples r china ; [zhao, shiyong] curtin univ, fuels & energy technol inst, dept chem engn, perth, wa 6102, australia ; [cheng, hui-ming] tsinghua univ, tsinghua berkeley shenzhen inst, shenzhen 518055, peoples r china
关键词Single-wall Carbon Nanotube Lithium Sulfur Batteries High Energy
学科领域Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
资助者MOST [2016YFA0200100, 2016YFB0100100, 2014CB932402]; National Science Foundation of China [51525206, 51521091, 51372253, U1401243]; Chinese Academy of Sciences [XDA09010104, KGZD-EWT06]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78945
专题中国科学院金属研究所
通讯作者Liu, C; Li, F (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式
GB/T 7714
Fang, Ruopian,Li, Guoxian,Zhao, Shiyong,et al. Single-wall carbon nanotube network enabled ultrahigh sulfur-content electrodes for high-performance lithium-sulfur batteries[J]. ELSEVIER SCIENCE BV,2017,42:205-214.
APA Fang, Ruopian.,Li, Guoxian.,Zhao, Shiyong.,Yin, Lichang.,Du, Kui.,...&Li, F .(2017).Single-wall carbon nanotube network enabled ultrahigh sulfur-content electrodes for high-performance lithium-sulfur batteries.ELSEVIER SCIENCE BV,42,205-214.
MLA Fang, Ruopian,et al."Single-wall carbon nanotube network enabled ultrahigh sulfur-content electrodes for high-performance lithium-sulfur batteries".ELSEVIER SCIENCE BV 42(2017):205-214.
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