Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries

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	Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries
	G. M. Zhou; D. W. Wang; F. Li; L. L. Zhang; N. Li; Z. S. Wu; L. Wen; G. Q. Lu; H. M. Cheng
	2010
发表期刊	Chemistry of Materials
ISSN	0897-4756
卷号	22 期号:18 页码:5306-5313
摘要	A well-organized flexible interleaved composite of graphene nanosheets (GNSs) decorated with Fe(3)O(4) particles was synthesized through in situ reduction of iron hydroxide between GNSs. The GNS/Fe(3)O(4) composite shows a reversible specific capacity approaching 1026 mA h(-1) g(-1) after 30 cycles at 35 mA g(-1) 580 mAh g(-1) after 100 cycles at 700 mA g(-1) as well as improved cyclic stability and excellent rate capability. The multifunctional features of the GNS/Fe(3)O(4) composite are considered as follows: (i) GNSs play a "flexible confinement" function to enwrap Fe(3)O(4) particles, which can compensate for the volume change of Fe(3)O(4) and prevent the detachment and agglomeration of pulverized Fe(3)O(4), thus extending the cycling life of the electrode; (ii) GNSs provide a large contact surface for individual dispersion of well-adhered Fe(3)O(4) particles and act as an excellent conductive agent to provide a highway for electron transport, improving the accessible capacity; (iii) Fe(3)O(4) particles separate GNSs and prevent their restacking thus improving the adsorption and immersion of electrolyte on the surface of electroactive material; and (iv) the porosity formed by lateral GNSs and Fe(3)O(4) particles facilitates ion transportation. As a result, this unique laterally confined GNS/Fe(3)O(4) composite can dramatically improve the cycling stability and the rate capability of Fe(3)O(4) as an anode material for lithium ion batteries.
部门归属	[zhou, guangmin; li, feng; zhang, lili; li, na; wu, zhong-shuai; wen, lei; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, da-wei; lu, gao qing (max)] univ queensland, aibn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia.;li, f (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;fli@imr.ac.cn cheng@imr.ac.cn
关键词	Electrode Materials Storage Properties Energy-storage Hollow Spheres Carbon Performance Li Composite Nanoparticles Oxide
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31775
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Zhou,D. W. Wang,F. Li,et al. Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries[J]. Chemistry of Materials,2010,22(18):5306-5313.
APA	G. M. Zhou.,D. W. Wang.,F. Li.,L. L. Zhang.,N. Li.,...&H. M. Cheng.(2010).Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries.Chemistry of Materials,22(18),5306-5313.
MLA	G. M. Zhou,et al."Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries".Chemistry of Materials 22.18(2010):5306-5313.