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Three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide for lithium-ion batteries and the Li storage mechanism.
Chemistry 2015; 21(8):3249-56C

Abstract

Nanostructured iron compounds as lithium-ion-battery anode material have attracted considerable attention with respect to improved electrochemical energy storage and excellent specific capacity, so lots of iron-based composites have been developed. Herein, a novel composite composed of three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide (denoted as Fe2 N@C-RGO) has been synthesized through a simple and effective technique assisted by a hydrothermal and subsequent heating treatment process. As the anode material for lithium-ion batteries, the synthetic Fe2 N@C-RGO displayed excellent Li(+) -ion storage performance with a considerable initial capacity of 847 mAh g(-1) , a superior cycle stability (a specific discharge capacity of 760 mAh g(-1) remained after the 100th cycle), and an improved rate-capability performance compared with those of the pure Fe2 N and Fe2 N-RGO nanostructures. The good performance should be attributed to the existence of RGO layers that can facilitate to enhance the conductivity and shorten the lithium-ion diffusion path; in addition, the carbon layer on the surface of Fe2 N can avert the structure decay caused by the volume change during the lithiation/delithiation process. Moreover, in situ X-ray absorption fine-structure analysis demonstrated that the excellent performance can be attributed to the lack of any obvious change in the coordination geometry of Fe2 N@C-RGO during the charge/discharge processes.

Authors+Show Affiliations

Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P. R. China), Fax: (+86) 451-8666-1259.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

25640982

Citation

Yu, Peng, et al. "Three-dimensional Fe2 N@C Microspheres Grown On Reduced Graphite Oxide for Lithium-ion Batteries and the Li Storage Mechanism." Chemistry (Weinheim an Der Bergstrasse, Germany), vol. 21, no. 8, 2015, pp. 3249-56.
Yu P, Wang L, Sun F, et al. Three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide for lithium-ion batteries and the Li storage mechanism. Chemistry. 2015;21(8):3249-56.
Yu, P., Wang, L., Sun, F., Zhao, D., Tian, C., Zhao, L., ... Fu, H. (2015). Three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide for lithium-ion batteries and the Li storage mechanism. Chemistry (Weinheim an Der Bergstrasse, Germany), 21(8), pp. 3249-56. doi:10.1002/chem.201406188.
Yu P, et al. Three-dimensional Fe2 N@C Microspheres Grown On Reduced Graphite Oxide for Lithium-ion Batteries and the Li Storage Mechanism. Chemistry. 2015 Feb 16;21(8):3249-56. PubMed PMID: 25640982.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide for lithium-ion batteries and the Li storage mechanism. AU - Yu,Peng, AU - Wang,Lei, AU - Sun,Fanfei, AU - Zhao,Dongdong, AU - Tian,Chungui, AU - Zhao,Lu, AU - Liu,Xu, AU - Wang,Jianqiang, AU - Fu,Honggang, Y1 - 2015/01/09/ PY - 2014/11/23/received PY - 2015/2/3/entrez PY - 2015/2/3/pubmed PY - 2015/2/3/medline KW - anodes KW - graphite KW - iron KW - lithium-ion batteries KW - nitrides SP - 3249 EP - 56 JF - Chemistry (Weinheim an der Bergstrasse, Germany) JO - Chemistry VL - 21 IS - 8 N2 - Nanostructured iron compounds as lithium-ion-battery anode material have attracted considerable attention with respect to improved electrochemical energy storage and excellent specific capacity, so lots of iron-based composites have been developed. Herein, a novel composite composed of three-dimensional Fe2 N@C microspheres grown on reduced graphite oxide (denoted as Fe2 N@C-RGO) has been synthesized through a simple and effective technique assisted by a hydrothermal and subsequent heating treatment process. As the anode material for lithium-ion batteries, the synthetic Fe2 N@C-RGO displayed excellent Li(+) -ion storage performance with a considerable initial capacity of 847 mAh g(-1) , a superior cycle stability (a specific discharge capacity of 760 mAh g(-1) remained after the 100th cycle), and an improved rate-capability performance compared with those of the pure Fe2 N and Fe2 N-RGO nanostructures. The good performance should be attributed to the existence of RGO layers that can facilitate to enhance the conductivity and shorten the lithium-ion diffusion path; in addition, the carbon layer on the surface of Fe2 N can avert the structure decay caused by the volume change during the lithiation/delithiation process. Moreover, in situ X-ray absorption fine-structure analysis demonstrated that the excellent performance can be attributed to the lack of any obvious change in the coordination geometry of Fe2 N@C-RGO during the charge/discharge processes. SN - 1521-3765 UR - https://www.unboundmedicine.com/medline/citation/25640982/Three_dimensional_Fe2_N@C_microspheres_grown_on_reduced_graphite_oxide_for_lithium_ion_batteries_and_the_Li_storage_mechanism_ L2 - https://doi.org/10.1002/chem.201406188 DB - PRIME DP - Unbound Medicine ER -