Free-Standing Thin Webs of Activated Carbon Nanofibers by Electrospinning for Rechargeable Li-O-2 Batteries

doi:10.1021/acsami.5b10088

	Free-Standing Thin Webs of Activated Carbon Nanofibers by Electrospinning for Rechargeable Li-O-2 Batteries
	Nie, Hongjiao 1,2; Xu, Chi 1,2; Zhou, Wei 1,2; Wu, Baoshan 1; Li, Xianfeng 1; Liu, Tao 1; Zhang, Huamin 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2016-01-27
卷号	8 期号:3 页码:1937-1942
关键词	Free-standing Cathodes Electrospinning Li-o-2 Battery Physical Activation Hierarchically Porous Structure
ISSN号	1944-8244
DOI	10.1021/acsami.5b10088
文献子类	Article
英文摘要	Free-standing activated carbon nanofibers (ACNF) were prepared through electrospinning combining with CO2 activation and then used for nonaqueous Li-O-2 battery cathodes. As-prepared ACNF based cathode was loosely packed with carbon nanofibers complicatedly overlapped. Owing to some micrometer-sized pores between individual nanofibers, relatively high permeability of O-2 across the cathode becomes feasible. Meanwhile, the mesopores introduced by CO2 activation act as additional nucleation sites for Li2O2 formation, leading to an increase in the density of Li2O2 particles along with a size decrease of the individual particles, and therefore, flake-like Li2O2 are preferentially formed. In addition, the free-standing structure of ACNF cathode eliminates the side reactions about PVDF. As a result, the Li-O-2 batteries with ACNF cathodes showed increased discharge capacities, reduced overpotentials, and longer cycle life in the case of full discharge and charge operation. This provides a novel pathway for the design of cathodes for Li-O-2 battery.
WOS关键词	LITHIUM-OXYGEN BATTERIES ; ENERGY-STORAGE ; AIR ELECTRODE ; CATHODE ; FABRICATION ; MORPHOLOGY ; REACTIVITY ; DEPOSITION ; REDUCTION ; GRAPHENE
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000369044100047
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171334]
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	Liu, Tao; Zhang, Huamin
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Nie, Hongjiao,Xu, Chi,Zhou, Wei,et al. Free-Standing Thin Webs of Activated Carbon Nanofibers by Electrospinning for Rechargeable Li-O-2 Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(3):1937-1942.
APA	Nie, Hongjiao.,Xu, Chi.,Zhou, Wei.,Wu, Baoshan.,Li, Xianfeng.,...&Zhang, Huamin.(2016).Free-Standing Thin Webs of Activated Carbon Nanofibers by Electrospinning for Rechargeable Li-O-2 Batteries.ACS APPLIED MATERIALS & INTERFACES,8(3),1937-1942.
MLA	Nie, Hongjiao,et al."Free-Standing Thin Webs of Activated Carbon Nanofibers by Electrospinning for Rechargeable Li-O-2 Batteries".ACS APPLIED MATERIALS & INTERFACES 8.3(2016):1937-1942.