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题名: The corrosion behaviors of Mg0.9-xTi0.1PdxNi(x=0.04 similar to 0.1) hydrogen storage alloy electrodes
作者: Tian, QF;  Zhang, Y;  Tan, ZC;  Sun, LX;  Xu, F;  Yuan, HT
关键词: hydrogen storage alloys ;  element substitution ;  corrosion potential ;  corrosion current ;  passive film
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2006-03-01
卷: 22, 期:3, 页:301-305
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The effects of partial substitution of Pd for Mg on the corrosion behaviors of Mg0.9-xTi0.1PdxNi (x=0.04-0.1) hydrogen storage alloys were studied in this paper. The alloys were prepared by mechanical alloying. The alloy structures became amorphous after ball milling 120 h, which was confirmed by XRD and TEM analyses. The cyclic charge-discharge tests showed that the Pd addition prolonged the cycle life of the alloys effectively. The corrosion performances of the alloys were investigated by open circuit potential measurements, anodic polarization, electrochemical impedance spectroscopy, and XPS experiments. The increase of Pd content shifted the alloy corrosion potentials towards more positive values. The initial corrosion currents of the alloys and its increment rates along with cycle number decreased with the increase of Pd content in the alloys. The measured electrochemical impedance spectra were fitted well with the proposed equivalent circuit model. The analyses suggested that the thickness and the resistance of passive film on the surface of alloys increased with the increase of Pd content in the alloys. The results of XPS experiments demonstrated that the addition of Pd in the alloys suppressed the oxidation and enhanced the anti-corrosion capabilities of the alloys. When the Pd content reached 0.1, the corrosion resistant performances of Mg0.9Ti0.1PdNi(x=0.04-0.1) alloys are the best and the discharge capacity retention rate is the highest.
关键词[WOS]: AMORPHOUS-ALLOYS ;  ELECTROCHEMICAL CHARACTERISTICS ;  DISCHARGE CAPACITIES ;  TI ;  PD ;  BATTERIES ;  TERNARY ;  MGNI ;  SUBSTITUTION ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000236122300009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140003
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Aerosp Catalysis & New Mat, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

Recommended Citation:
Tian, QF,Zhang, Y,Tan, ZC,et al. The corrosion behaviors of Mg0.9-xTi0.1PdxNi(x=0.04 similar to 0.1) hydrogen storage alloy electrodes[J]. ACTA PHYSICO-CHIMICA SINICA,2006,22(3):301-305.
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