Ultrathin Ti2Nb2O9 Nanosheets with Pseudocapacitive Properties as Superior Anode for Sodium-Ion Batteries

doi:10.1002/adma.201804378

	Ultrathin Ti2Nb2O9 Nanosheets with Pseudocapacitive Properties as Superior Anode for Sodium-Ion Batteries
	Maier, Joachim 1; Shen, Laifa 1; Wang, Yi 1; Lv, Haifeng 3; Chen, Shuangqiang 1; van Aken, Peter A.1; Wu, Xiaojun 3; Yu, Yan 1,2,3,4
刊名	ADVANCED MATERIALS
	2018-12-01
卷号	30 期号:51 页码:8
关键词	anode materials sodium-ions batteries Ti2Nb2O9 ultrathin nanosheets
ISSN号	0935-9648
DOI	10.1002/adma.201804378
通讯作者	Yu, Yan(yanyumse@ustc.edu.cn)
英文摘要	Sodium-ion batteries are emerging as promising candidates for grid energy storage because of the abundant sodium resources and low cost. However, the identification and development of suitable anode materials is far from being satisfactory. Here, it is demonstrated that the Ti2Nb2O9 nanosheets with tunnel structure can be used as suitable anode materials for sodium-ion batteries. Ti2Nb2O9 nanosheets are synthesized by liquid exfoliation combined with topotactic dehydration, delivering a high reversible capacity of 250 mAh g(-1) at 50 mA g(-1) at a suitable average voltage of approximate to 0.7 V. It is found that a low energy diffusion barrier, enlarged interlayer spacing, and exceptional nanoporosity together give rise to high rate performance characterized by pseudocapacitive behavior. The observed high reversible capacity, excellent rate capability, and good cyclability of Ti2Nb2O9 nanosheets make this material competitive when compared to other sodium insertion anode materials.
资助项目	National Key R&D Research Program of China[2018YFB0905400] ; National Natural Science Foundation of China[51872277] ; National Natural Science Foundation of China[51622210] ; National Natural Science Foundation of China[51504139] ; National Natural Science Foundation of China[21573204] ; National Natural Science Foundation of China[21421063] ; Sofja Kovalevskaja award ; Alexander von Humboldt Foundation ; MOST[2016YFA0200602] ; MOST[2018 YFA0208603] ; Fundamental Research Funds for the Central Universities[WK3430000004] ; Max Planck Society
WOS关键词	NANOCRYSTALLINE ANATASE TIO2 ; ENERGY-STORAGE ; INSERTION ; INTERCALATION ; LITHIUM ; ELECTRODES ; POINTS ; INNER ; OXIDE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000453926000004
资助机构	National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sofja Kovalevskaja award ; Sofja Kovalevskaja award ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; MOST ; MOST ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Max Planck Society ; Max Planck Society ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sofja Kovalevskaja award ; Sofja Kovalevskaja award ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; MOST ; MOST ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Max Planck Society ; Max Planck Society ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sofja Kovalevskaja award ; Sofja Kovalevskaja award ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; MOST ; MOST ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Max Planck Society ; Max Planck Society ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sofja Kovalevskaja award ; Sofja Kovalevskaja award ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; MOST ; MOST ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Max Planck Society ; Max Planck Society
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166490]
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.Chinese Acad Sci, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Liaoning, Peoples R China 3.Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 4.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Maier, Joachim,Shen, Laifa,Wang, Yi,et al. Ultrathin Ti2Nb2O9 Nanosheets with Pseudocapacitive Properties as Superior Anode for Sodium-Ion Batteries[J]. ADVANCED MATERIALS,2018,30(51):8.
APA	Maier, Joachim.,Shen, Laifa.,Wang, Yi.,Lv, Haifeng.,Chen, Shuangqiang.,...&Yu, Yan.(2018).Ultrathin Ti2Nb2O9 Nanosheets with Pseudocapacitive Properties as Superior Anode for Sodium-Ion Batteries.ADVANCED MATERIALS,30(51),8.
MLA	Maier, Joachim,et al."Ultrathin Ti2Nb2O9 Nanosheets with Pseudocapacitive Properties as Superior Anode for Sodium-Ion Batteries".ADVANCED MATERIALS 30.51(2018):8.