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题名: Graphene-Wrapped Fe(3)O(4) Anode Material with Improved Reversible Capacity and Cyclic Stability for Lithium Ion Batteries
作者: G. M. Zhou;  D. W. Wang;  F. Li;  L. L. Zhang;  N. Li;  Z. S. Wu;  L. Wen;  G. Q. Lu;  H. M. Cheng
发表日期: 2010
关键词: electrode materials;  storage properties;  energy-storage;  hollow spheres;  carbon;  performance;  li;  composite;  nanoparticles;  oxide
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;
相关网址: <Go to ISI>://WOS:000281891900022
刊名: Chemistry of Materials
内容类型: 期刊论文
ISSN号: 0897-4756
KOS主题词: electrode materials;  Energy storage;  Carbon;  Bore;  Performance;  Li;  Composite;  Nanoparticles;  Oxides
KOS主题词(UF): Storage of energy;  compressed air energy storage;  CAES;  inductive energy storage;  inductive storage;  mechanical energy storage;  power inductors;  superconducting magnet energy storage;  energy storage devices;  C;  carbon nanotubes;  diamond-like carbon;  DLC;  discotic liquid crystals;  discophases;  nanotube devices;  C (envelope sizes);  C (US paper size);  Cytosine;  carbon nano-sized tubes;  carbon nano tubes;  carbon nanoscale tubes;  carbon nanotubules;  无机发光材料;  [+];  BOR;  BORON;  CARBONE;  KALIUM;  KOHLENSTOFF;  PHOSPHOR;  PHOSPHORE;  PHOSPHORUS;  POTASSIUM;  POTASSIUM (FRANCAIS);  SCHWEFEL;  SOUFRE;  SULFUR;  SULPHUR;  TUNGSTEN;  TUNGSTENE;  URAN;  URANIUM;  URANIUM (FRANCAIS);  VANADIUM;  VANADIUM (DEUTSCH);  VANADIUM (FRANCAIS);  WOLFRAM;  WOLFRAM (DEUTSCH);  YTTRIUM;  YTTRIUM (DEUTSCH);  YTTRIUM (FRANCAIS);  Competence;  Incompetence, mental;  Mental competence;  LITHIUM;  LITHIUM (DEUTSCH);  LITHIUM (FRANCAIS);  localization index;  复合材料;  nanopowders;  nano-scale particles;  nano-sized particles;  nanoscale particles;  氧化物;  oxide;  OXYDES
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Recommended Citation:
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.

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