Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities

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	Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities
	Dong, Yanfeng ; Wu, Zhong-Shuai ; Zheng, Shuanghao ; Wang, Xiaohui ; Qin, Jieqiong ; Wang, Sen ; Shi, Xiaoyu ; Bao, Xinhe
刊名	ACS NANO
	2017-05-01
卷号	11 期号:5 页码:4792-4800
关键词	MXene sodium titanate potassium titanate nanoribbons sodium ion batteries potassium ion batteries
ISSN号	1936-0851
通讯作者	Wu, ZS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China.
中文摘要	Sodium and potassium ion batteries hold promise for next-generation energy storage systems due to their rich abundance and low cost, but are facing great challenges in optimum electrode materials for actual applications. Here, ultrathin nanoribbons of sodium titanate (M-NTO, NaTi1.5O8.3) and potassium titanate (M-KTO, K2Ti4O9) were successfully synthesized by a simultaneous oxidation and alkalization process of Ti3C2 MXene. Benefiting from the suitable interlayer spacing (0.90 nm for M-NTO, 0.93 nm for M-KTO), ultrathin thickness (<11 nm), narrow widths of nanoribbons (<60 nm), and open macroporous structures for enhanced ion insertion/extraction kinetics, the resulting M-NTO exhibited a large reversible capacity of 191 mAh g(-1) at 200 mA g(-1) for sodium storage, higher than those of pristine Ti3C2 (178 mAh g(-1)) and commercial TiC derivatives (86 mAh g(-1)). Notably, M-KTO displayed a superior reversible capacity of 151 mAh g(-1) at 50 mA g(-1) and 88 mAh g(-1) at a high rate of 300 mA g(-1) and long-term stable cyclability over 900 times, which outperforms other Ti-based layered materials reported to date. Moreover, this strategy is facile and highly flexible and can be extended for preparing a large number of MXene-derived materials, from the 60+ group of MAX phases, for various applications such as supercapacitors, batteries, and electrocatalysts.
学科主题	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
收录类别	SCI
资助信息	National Key R&D Program of China [2016YBF0100100, 2016YFA0200200]; National Natural Science Foundation of China [51572259]; Natural Science Foundation of Liaoning Province [201602737]; Thousand Youth Talents Plan of China, DICP [Y5610121T3]; China Postdoctoral Science Foundation [2016M601349]; DICP
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78155]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Dong, Yanfeng,Wu, Zhong-Shuai,Zheng, Shuanghao,et al. Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities[J]. ACS NANO,2017,11(5):4792-4800.
APA	Dong, Yanfeng.,Wu, Zhong-Shuai.,Zheng, Shuanghao.,Wang, Xiaohui.,Qin, Jieqiong.,...&Bao, Xinhe.(2017).Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities.ACS NANO,11(5),4792-4800.
MLA	Dong, Yanfeng,et al."Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities".ACS NANO 11.5(2017):4792-4800.