中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Scalable synthesis of nanometric alpha-fe2o3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage

文献类型:期刊论文

Qiu, jun1; Li, mingjie2; Zhao, yun3; Kong, qingshan2; Li, xianguo1; Li, chaoxu2
SourceRsc advances
2016
Volume6Issue:10Pages:7961-7969
English AbstractNanostructured 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.
WOS HeadingsScience & technology ; Physical sciences
WOS SubjectChemistry, multidisciplinary
WOS Subject ExtendedChemistry
WOS Keyword PlusLi-ion batteries ; High-performance anode ; High-capacity anode ; One-pot synthesis ; Facile synthesis ; Sodium alginate ; Electrochemical performance ; Thermal-degradation ; Fe3o4 nanospheres ; Graphene oxide
Indexed TypeSci
Language英语
WOS IDWos:000369515700034
Available Date2016-05-03
Citation statistics
源URL[http://ir.qibebt.ac.cn/handle/337004/7965]  
Collection青岛生物能源与过程研究所_仿生智能材料团队
Affiliation1.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
Recommended Citation
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.

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