Boosting Sodium Storage in TiF3/Carbon Core/Sheath Nanofibers through an Efficient Mixed-Conducting Network

doi:10.1002/aenm.201901470

	Boosting Sodium Storage in TiF3/Carbon Core/Sheath Nanofibers through an Efficient Mixed-Conducting Network
	Zhang, Yan 1; Srot, Vesna 1; Moudrakovski, Igor 1; Feng, Yuezhan 2; van Aken, Peter A.1; Maier, Joachim 1; Yu, Yan 1,3,4,5
刊名	ADVANCED ENERGY MATERIALS
	2019-07-01
卷号	9 期号:27 页码:9
关键词	anodes core sheath mixed-conducting networks sodium-ion batteries titanium fluoride
ISSN号	1614-6832
DOI	10.1002/aenm.201901470
通讯作者	Yu, Yan(yanyumse@ustc.edu.cn)
英文摘要	Sodium-ion batteries (SIBs) are considered to be promising energy storage devices for large-scale grid storage application due to the vast earth-abundance and low cost of sodium-containing precursors. Designing and fabricating a highly efficient anode is one of the keys to improve the electrochemical performance of SIBs. Recently, fluoride-based materials are found to show an exceptional anode function with high theoretical specific capacity, based on open-framework structure enabling Na insertion and also exhibiting improved safety. However, fluoride-based materials suffer from sluggish kinetics and poor capacity retention essentially due to low electric conductivity. Here, an efficient mixed-conducting network offering fast pathways is proposed to address these issues. This network relies on titanium fluoride subset of carbon (TiF3 subset of C) core/sheath nanofibers that are prepared via electrospinning. Such highly interconnected electrodes exhibit an enhanced and faster sodium storage performance. Carbon sheath nanofibers are key to an efficient ion- and electron-conducting network that enable Na+/e(-) transfer to reach the nanosized TiF3. In addition, in-situ-converted Ti and NaF particles embedded in the carbon matrix allow high reversible interfacial storage. As a result, the TiF3 subset of C core/sheath electrode exhibits a high capacity of 161 mAh g(-1) at a high current density of 1000 mA g(-1) over 2000 cycles.
资助项目	National Key R&D Program of China[2018YFB0905400] ; National Natural Science Foundation of China[51622210] ; National Natural Science Foundation of China[51872277] ; DNL cooperation Fund, CAS[DNL180310] ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; European Union's Horizon 2020 research and innovation program[823717-ESTEEM3] ; Surface Science Central Facility
WOS关键词	SOLID-STATE NMR ; CONVERSION REACTION-MECHANISMS ; ION BATTERIES ; ELECTRODE MATERIALS ; METAL FLUORIDES ; LITHIUM ; LI ; NA ; CATHODE ; VOLTAGE
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000477779600006
资助机构	National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation Fund, CAS ; DNL cooperation Fund, CAS ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; European Union's Horizon 2020 research and innovation program ; European Union's Horizon 2020 research and innovation program ; Surface Science Central Facility ; Surface Science Central Facility ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation Fund, CAS ; DNL cooperation Fund, CAS ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; European Union's Horizon 2020 research and innovation program ; European Union's Horizon 2020 research and innovation program ; Surface Science Central Facility ; Surface Science Central Facility ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation Fund, CAS ; DNL cooperation Fund, CAS ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; European Union's Horizon 2020 research and innovation program ; European Union's Horizon 2020 research and innovation program ; Surface Science Central Facility ; Surface Science Central Facility ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation Fund, CAS ; DNL cooperation Fund, CAS ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; Sofja Kovalevskaja award of the Alexander von Humboldt Foundation ; European Union's Horizon 2020 research and innovation program ; European Union's Horizon 2020 research and innovation program ; Surface Science Central Facility ; Surface Science Central Facility
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173726]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yu, Yan
作者单位	1.Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany 2.Zhengzhou Univ, Minist Educ, Key Lab Mat Proc & Mold, Zhengzhou 450002, Henan, Peoples R China 3.Univ Sci & Technol China, Chinese Acad Sci, Hefei Natl Lab Phys Sci Microscale, Dept Mat Sci & Engn,Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China 4.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Srot, Vesna,Moudrakovski, Igor,et al. Boosting Sodium Storage in TiF3/Carbon Core/Sheath Nanofibers through an Efficient Mixed-Conducting Network[J]. ADVANCED ENERGY MATERIALS,2019,9(27):9.
APA	Zhang, Yan.,Srot, Vesna.,Moudrakovski, Igor.,Feng, Yuezhan.,van Aken, Peter A..,...&Yu, Yan.(2019).Boosting Sodium Storage in TiF3/Carbon Core/Sheath Nanofibers through an Efficient Mixed-Conducting Network.ADVANCED ENERGY MATERIALS,9(27),9.
MLA	Zhang, Yan,et al."Boosting Sodium Storage in TiF3/Carbon Core/Sheath Nanofibers through an Efficient Mixed-Conducting Network".ADVANCED ENERGY MATERIALS 9.27(2019):9.