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Electrochemical characteristics of encapsulated metal-hydride-alloy electrodes
Alternative TitleMater. Res. Bull.
Zhu, WH; Zhang, DJ; Ke, JJ
1996-06-01
Source PublicationMATERIALS RESEARCH BULLETIN
ISSN0025-5408
Volume31Issue:6Pages:673-682
AbstractMetal hydride electrodes with copper-encapsulated alloys and non-coated alloys were fabricated using suitable conductive and binding agents. The charge-discharge characteristics of three kinds of hydride electrodes were comparatively investigated. The encapsulated alloy electrode is remarkably superior to the non-coated LaNi5-based one, discharging at a high rate and exhibiting a smaller capacity decay at the stage of cycle tests. The hydride alloy quality of hydride electrodes can be effectively determined by measuring rate capability. The results of vented cell experiments confirm that the capacity decay of non-coated alloy electrodes in sealed cells is not due to the oxidation of oxygen from the nickel hydroxide positive electrodes. The relationship between the equilibrium potential of hydride electrode and the equilibrium hydrogen pressure has been deduced by a succinct thermodynamic method, without consideration of the unknown activity of water and fugacity coefficient of hydrogen.; Metal hydride electrodes with copper-encapsulated alloys and non-coated alloys were fabricated using suitable conductive and binding agents. The charge-discharge characteristics of three kinds of hydride electrodes were comparatively investigated. The encapsulated alloy electrode is remarkably superior to the non-coated LaNi5-based one, discharging at a high rate and exhibiting a smaller capacity decay at the stage of cycle tests. The hydride alloy quality of hydride electrodes can be effectively determined by measuring rate capability. The results of vented cell experiments confirm that the capacity decay of non-coated alloy electrodes in sealed cells is not due to the oxidation of oxygen from the nickel hydroxide positive electrodes. The relationship between the equilibrium potential of hydride electrode and the equilibrium hydrogen pressure has been deduced by a succinct thermodynamic method, without consideration of the unknown activity of water and fugacity coefficient of hydrogen.
KeywordAlloys Hydrides Electrochemical Measurements Electrochemical Properties Energy Storage
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNICKEL ; BATTERIES
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:A1996UP78900009
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5908
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Zhu, WH,Zhang, DJ,Ke, JJ. Electrochemical characteristics of encapsulated metal-hydride-alloy electrodes[J]. MATERIALS RESEARCH BULLETIN,1996,31(6):673-682.
APA Zhu, WH,Zhang, DJ,&Ke, JJ.(1996).Electrochemical characteristics of encapsulated metal-hydride-alloy electrodes.MATERIALS RESEARCH BULLETIN,31(6),673-682.
MLA Zhu, WH,et al."Electrochemical characteristics of encapsulated metal-hydride-alloy electrodes".MATERIALS RESEARCH BULLETIN 31.6(1996):673-682.
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