中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification

文献类型:期刊论文

;
作者Liu, L; Sun, LM; Liu, J; Xiao, XL; Hu, ZB; Cao, XZ; Wang, BY; Liu, XF;曹兴忠; Wang BY(王宝义)
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY ; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
出版日期2014 ; 2014
卷号39期号:21页码:11258-11266
关键词Transition metal oxides Lithium ion battery Anode Hydrogenation Electrochemical property Transition metal oxides Lithium ion battery Anode Hydrogenation Electrochemical property
ISSN号0360-3199
DOI10.1016/j.ijhydene.2014.05.093
英文摘要Nanocrystal NiFe2O4 (NFO) octahedron with a spinel structure has been successfully synthesized by a one-step hydrothermal method. The effects of hydrogenation on the crystal structure, morphology, surface structure, and the electrochemical performance of NFO are comprehensively investigated for the first time. After hydrogenation, the well-defined octahedron morphology of NFO disappears and a small fraction of metallic Ni and some oxygen vacancies are generated after hydrogenation which has been characterized by X-ray diffraction (XRD), X-ray photoelectronic spectrometer (XPS) and Positron annihilation lifetime spectroscopy (PALS). Compared to the pristine NFO or the annealed NFO in air, the hydrogenated samples exhibit much better capacity retention (60% higher than un-hydrogenated NFO at 50th cycle) and rate capability (3 times higher at 1 A/g), which can be largely attributed to the synergetic effect of the conductive metallic Ni and oxygen vacancies resulting from H-2 reduction. Furthermore, this facile hydrogenation modification method may also be applied to improve the electrochemical performances of other transition metal oxides electrodes. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.; Nanocrystal NiFe2O4 (NFO) octahedron with a spinel structure has been successfully synthesized by a one-step hydrothermal method. The effects of hydrogenation on the crystal structure, morphology, surface structure, and the electrochemical performance of NFO are comprehensively investigated for the first time. After hydrogenation, the well-defined octahedron morphology of NFO disappears and a small fraction of metallic Ni and some oxygen vacancies are generated after hydrogenation which has been characterized by X-ray diffraction (XRD), X-ray photoelectronic spectrometer (XPS) and Positron annihilation lifetime spectroscopy (PALS). Compared to the pristine NFO or the annealed NFO in air, the hydrogenated samples exhibit much better capacity retention (60% higher than un-hydrogenated NFO at 50th cycle) and rate capability (3 times higher at 1 A/g), which can be largely attributed to the synergetic effect of the conductive metallic Ni and oxygen vacancies resulting from H-2 reduction. Furthermore, this facile hydrogenation modification method may also be applied to improve the electrochemical performances of other transition metal oxides electrodes. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
学科主题Chemistry; Electrochemistry; Energy & Fuels ; Chemistry; Electrochemistry; Energy & Fuels
收录类别SCI
电子版国际标准刊号1879-3487
语种英语
WOS记录号WOS:000339039500047 ; WOS:000339039500047
公开日期2016-05-03
源URL[http://ir.ihep.ac.cn/handle/311005/225042]  
专题中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Liu, L,Sun, LM,Liu, J,et al. Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification, Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014, 2014,39, 39(21):11258-11266, 11258-11266.
APA Liu, L.,Sun, LM.,Liu, J.,Xiao, XL.,Hu, ZB.,...&王宝义.(2014).Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,39(21),11258-11266.
MLA Liu, L,et al."Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39.21(2014):11258-11266.

入库方式: OAI收割

来源:高能物理研究所

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