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Necklace-like MoC sulfiphilic sites embedded in interconnected carbon networks for Li-S batteries with high sulfur loading
Shi, Huifa1,3; Sun, Zhenhua2; Lv, Wei1; Wang, Shaogang2; Shi, Ying2; Zhang, Yunbo5; Xiao, Shujie1,3; Yang, Huicong2; Yang, Quan-Hong4; Li, Feng2
Corresponding AuthorLv, Wei(lv.wei@sz.tsinghua.edu.cn) ; Yang, Quan-Hong(qhyangcn@tju.edu.cn) ; Li, Feng(fli@imr.ac.cn)
2019-05-14
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume7Issue:18Pages:11298-11304
AbstractThe shuttling of dissolved polysulfide intermediates and their sluggish reaction kinetics largely reduce the cycle life and sulfur utilization of lithium-sulfur (Li-S) batteries. In this study, low-cost bacterial cellulose was used as the precursor for interconnected carbon networks and a supporting framework for impregnated molybdate ions. After freeze-drying and solid-state thermal reactions, necklace-like molybdenum carbide embedded in interconnected N-doped carbon nanofibers (MoC@N-CNF) was obtained to be used as a high sulfur loading host. On the one hand, the interconnected conductive carbon network enables fast electron and ion transport, and on the other hand, the embedded sulfiphilic MoC efficiently immobilizes polysulfides and catalytically promotes their redox conversion. Therefore, the as-prepared electrode coupled with the lithium polysulfide catholyte exhibits good cycling stability with a low capacity decay of 0.084% per cycle at 1C for 350 cycles and a high rate capability of 799 mA h g(-1) at 2C. Moreover, a high areal capacity of 12.3 mA h cm(-2) with an areal sulfur loading of 10 mg cm(-2) at 0.1C is also achieved.
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Institute of Metal Research
DOI10.1039/c9ta00741e
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2016YFB0100100] ; National Key R&D Program of China[2016YFA0200100] ; National Natural Science Foundation of China[51525206] ; National Natural Science Foundation of China[51521091] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA22010602] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2015150] ; Institute of Metal Research[2015-PY03]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000472225200046
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/134055
Collection中国科学院金属研究所
Corresponding AuthorLv, Wei; Yang, Quan-Hong; Li, Feng
Affiliation1.Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Tsinghua Univ, Sch Mat Sci & Engn, Lab Adv Mat, Beijing 100084, Peoples R China
4.Tianjin Univ, Sch Chem Engn & Technol, Nanoyang Grp, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
5.Tsinghua Univ, TBSI, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Shi, Huifa,Sun, Zhenhua,Lv, Wei,et al. Necklace-like MoC sulfiphilic sites embedded in interconnected carbon networks for Li-S batteries with high sulfur loading[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(18):11298-11304.
APA Shi, Huifa.,Sun, Zhenhua.,Lv, Wei.,Wang, Shaogang.,Shi, Ying.,...&Li, Feng.(2019).Necklace-like MoC sulfiphilic sites embedded in interconnected carbon networks for Li-S batteries with high sulfur loading.JOURNAL OF MATERIALS CHEMISTRY A,7(18),11298-11304.
MLA Shi, Huifa,et al."Necklace-like MoC sulfiphilic sites embedded in interconnected carbon networks for Li-S batteries with high sulfur loading".JOURNAL OF MATERIALS CHEMISTRY A 7.18(2019):11298-11304.
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