A hierarchically honeycomb-like carbon via one-step surface and pore adjustment with superior capacity for lithium-oxygen batteries

	A hierarchically honeycomb-like carbon via one-step surface and pore adjustment with superior capacity for lithium-oxygen batteries
	Li, Jing 1,2; Zhang, Yining 1; Zhou, Wei 1,2; Nie, Hongjiao 1,2; Zhang, Huamin 1
刊名	journal of power sources
	2014-09-15
卷号	262 页码:29-35
关键词	Lithium-oxygen battery Cathode Hierarchical porous structure Ammonia activation Electrochemistry Oxygen reduction
英文摘要	li-o-2 batteries have attracted considerable attention due to their high energy density. the critical challenges that limit the practical applications include effective utilization of electrode space for solid products deposition and acceptable cycling performance. in the present work, a nitrogen-doped micron-sized honeycomb-like carbon is developed for use as a cathode material for li-o-2 batteries. this novel material is obtained by using nano-caco3 particles as hard template and sucrose as the carbon source, followed by thermal annealing at 800 degrees c in ammonia. with one-step ammonia activation, surface nitrogenation and further pore structure optimization are realized simultaneously. the material exhibits enhanced activity for oxygen reduction reaction and oxygen transfer ability. surprisingly, an improved cycling stability is also obtained. as a result, a superior discharge capacity up to 12,600 mah g(-1) is achieved, about 4 times that of commercial ketjenblack carbon. the results provide a novel route to construct effective non-metal carbon-based cathodes for high performance of li-o-2 batteries. (c) 2014 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	electrochemistry ; energy & fuels
研究领域[WOS]	electrochemistry ; energy & fuels
关键词[WOS]	reduction reaction ; li-o-2 batteries ; air electrode ; graphene ; catalysts ; cathode ; ammonia
收录类别	SCI
语种	英语
WOS记录号	WOS:000337199800005
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145402]
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
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Li, Jing,Zhang, Yining,Zhou, Wei,et al. A hierarchically honeycomb-like carbon via one-step surface and pore adjustment with superior capacity for lithium-oxygen batteries[J]. journal of power sources,2014,262:29-35.
APA	Li, Jing,Zhang, Yining,Zhou, Wei,Nie, Hongjiao,&Zhang, Huamin.(2014).A hierarchically honeycomb-like carbon via one-step surface and pore adjustment with superior capacity for lithium-oxygen batteries.journal of power sources,262,29-35.
MLA	Li, Jing,et al."A hierarchically honeycomb-like carbon via one-step surface and pore adjustment with superior capacity for lithium-oxygen batteries".journal of power sources 262(2014):29-35.