IHEP OpenIR
Enhancing the electrochemical properties of NiFe2O4 anode for lithium ion battery through a simple hydrogenation modification
Liu, L; Sun, LM; Liu, J; Xiao, XL; Hu, ZB; Cao, XZ; Wang, BY; Liu, XF;曹兴忠; Wang BY(王宝义)
2014
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
EISSN1879-3487
Volume39Issue:21Pages:11258-11266
AbstractNanocrystal 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.
KeywordTransition metal oxides Lithium ion battery Anode Hydrogenation Electrochemical property
Subject AreaChemistry; Electrochemistry; Energy & Fuels
DOI10.1016/j.ijhydene.2014.05.093
Indexed BySCI
Language英语
WOS IDWOS:000339039500047
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/225042
Collection中国科学院高能物理研究所
Recommended Citation
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[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(21):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.
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