In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 仿生能源与储能系统团队

	In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage
	Yue, Yanhua 2; Han, Pengxian 2; He, Xiang 1; Zhang, Kejun 2; Liu, Zhihong 2; Zhang, Chuanjian 2; Dong, Shanmu 2; Gu, Lin 1; Cui, Guanglei2
刊名	JOURNAL OF MATERIALS CHEMISTRY
	2012
卷号	22 期号:11 页码:4938-4943
英文摘要	A graphene/titanium nitride (G/TiN) hybrid as an anode material of lithium ion batteries is prepared by a simple in situ hydrolysis method combined with ammonia annealing. TiN nanoparticles as obtained are similar to 5 nm in size and homogeneously anchored on G. The G/TiN hybrid anode delivers a reversible capacity as high as 646 mA h g(-1) at 20 mA g(-1) and exhibits an enhanced initial coulombic efficiency of 75%, much higher than that of pure graphene (G: 52%) in the first cycle. The capacity retention is as much as 86% after 200 cycles. At a current density of 2000 mA g(-1), the hybrid anode still retains 325 mA h g(-1) while that of G is only 98 mA h g(-1). It is demonstrated that the G/TiN hybrids display a superior electrochemical performance owing to the highly efficient mixed (electron and Li+) conducting network. The internal defects between G layers induced by nitrogen-doping in G/TiN may improve reversible Li storage, whereas the catalytic sites on the surface of G related to the decomposition of the electrolyte may be occupied by TiN, leading to a decreased irreversible capacity. Moreover, the formation of Li3N in the interface is beneficial to interface transport, which is confirmed by aberration-corrected scanning transmission electron microscopy. The anchoring of TiN nanoparticles on G is promising prospect for energy storage applications in high performance lithium-ion batteries.
学科主题	仿生能源系统
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Materials Science
关键词[WOS]	LI-ION BATTERIES ; TITANIUM NITRIDE ; CARBON NANOTUBES ; ANODE MATERIALS ; FILMS ; TIN ; NANOPARTICLES ; NANOSHEETS ; CAPACITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000300571400057
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn:8080/handle/337004/991]
专题	青岛生物能源与过程研究所_仿生能源与储能系统团队
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Yue, Yanhua,Han, Pengxian,He, Xiang,et al. In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(11):4938-4943.
APA	Yue, Yanhua.,Han, Pengxian.,He, Xiang.,Zhang, Kejun.,Liu, Zhihong.,...&Cui, Guanglei.(2012).In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage.JOURNAL OF MATERIALS CHEMISTRY,22(11),4938-4943.
MLA	Yue, Yanhua,et al."In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage".JOURNAL OF MATERIALS CHEMISTRY 22.11(2012):4938-4943.