Scalable synthesis of nanometric alpha-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage

doi:10.1039/c5ra21541b

QIBEBT-IR > 仿生智能材料研究组

	Scalable synthesis of nanometric alpha-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage
	Qiu, Jun 1; Li, Mingjie 2; Zhao, Yun 3; Kong, Qingshan 2; Li, Xianguo 1; Li, Chaoxu 2
	2016
发表期刊	RSC ADVANCES
卷号	6 期号:10 页码:7961-7969
摘要	Nanostructured alpha-Fe2O3 with a carbon coating has advantages over commercially available graphitic anodes in lithium ion batteries, including high theoretical anodic capacity (1007 mA h g(-1)), low cost and environmental safety. However, parts of its merits were cancelled out by the current route used for its synthesis. For example, most of its synthesis pathways are tedious, costly, on small scale and environmentally unfriendly. By combining two naturally abundant materials (iron ions and sodium alginate) into conventional wet-spinning and pyrolysis processes, we show that alpha-Fe2O3 could be nanostructured and carbon-coated using a facile and yet scalable technique. The successful synthesis of nanostructured alpha-Fe2O3 within interconnected carbon shells strongly depends on the chelation of iron ions and alginate into "egg-box" networks and an optimized pyrolysis step. Due to an extraordinary combination of nanometric scale, improved electrical conductivity and spatial confinement of the carbon coating, the resultant materials exhibit a high lithium storage capacity (e.g. up to similar to 1400 mA h g(-1) at a current of 50 mA g(-1) in the initial cycle) and great stability (e.g. similar to 560 mA h g(-1) after 600 cycles at 200 mA g(-1)) as well as a coulombic efficiency of 97.5%. Owing to the cost-efficient, environmentally friendly and scalable production, this synthesis may pave a highly promising way to the macroscopic preparation of alpha-Fe2O3/carbon hybrid materials as anodes in lithium ion batteries.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c5ra21541b
关键词[WOS]	LI-ION BATTERIES ; HIGH-PERFORMANCE ANODE ; HIGH-CAPACITY ANODE ; ONE-POT SYNTHESIS ; FACILE SYNTHESIS ; SODIUM ALGINATE ; ELECTROCHEMICAL PERFORMANCE ; THERMAL-DEGRADATION ; FE3O4 NANOSPHERES ; GRAPHENE OXIDE
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	National Key Technology R&D Program of the Ministry of Science and Technology(2015BAD14B06) ; National Natural Science Foundation of China(21474125) ; Shandong Collaborative Innovation Center for marine biomass fiber materials and textiles ; Chinese "1000 youth Talent Program"
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000369515700034
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/7965
专题	仿生智能材料研究组
作者单位	1.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266101, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 3.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Jun,Li, Mingjie,Zhao, Yun,et al. Scalable synthesis of nanometric alpha-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage[J]. RSC ADVANCES,2016,6(10):7961-7969.
APA	Qiu, Jun,Li, Mingjie,Zhao, Yun,Kong, Qingshan,Li, Xianguo,&Li, Chaoxu.(2016).Scalable synthesis of nanometric alpha-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage.RSC ADVANCES,6(10),7961-7969.
MLA	Qiu, Jun,et al."Scalable synthesis of nanometric alpha-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage".RSC ADVANCES 6.10(2016):7961-7969.