Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification
文献类型:期刊论文
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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
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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 |
DOI | 10.1016/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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