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Surface modification of AB(2) and AB(5) hydrogen storage alloy electrodes by the hot-charging treatment
Yu, B; Chen, L; Wen, MF; Tong, M; Chen, DM; Tian, YW; Zhai, YC
Corresponding AuthorChen, L()
2001-03-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume17Issue:2Pages:247-251
AbstractThe effect of the hot-charging treatment on the performance of AB(2) and AB(5) hydrogen storage alloy electrodes was investigated. The result showed that the treatment can markedly improve the voltage plateau ratio (VPR), the high rate discharge ability (HRDA), the diffusion coefficient of hydrogen DH and the discharge capacity of the AB2 hydrogen storage alloy electrode. The SEM analysis showed that the hot-charging treatment brings about a Ni-rich surface due to the dissolution of Zr oxides. It is also very helpful for the improvement of the kinetic properties of AB2 hydrogen storage alloy electrode because the microcracking of the surface results in fresh surface. This can be the basic modification treatment for NiMH battery used in electric vehicles (EVs) in the future. But for AB(5) type alloys, the treatment has the disadvantage of impairing the comprehensive electrochemical properties, because the surface of the alloy may be corroded during the treatment. The mechanism of the surface modification of the electrode is also proposed.
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000167720500013
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/112165
Collection中国科学院金属研究所
Corresponding AuthorChen, L
Affiliation1.Chinese Acad Sci, Mat Res Inst, Shenyang 110015, Peoples R China
2.Northeastern Univ, Shenyang 110006, Peoples R China
Recommended Citation
GB/T 7714
Yu, B,Chen, L,Wen, MF,et al. Surface modification of AB(2) and AB(5) hydrogen storage alloy electrodes by the hot-charging treatment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2001,17(2):247-251.
APA Yu, B.,Chen, L.,Wen, MF.,Tong, M.,Chen, DM.,...&Zhai, YC.(2001).Surface modification of AB(2) and AB(5) hydrogen storage alloy electrodes by the hot-charging treatment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,17(2),247-251.
MLA Yu, B,et al."Surface modification of AB(2) and AB(5) hydrogen storage alloy electrodes by the hot-charging treatment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 17.2(2001):247-251.
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