Effect of Annealing Treatment on the Phase Structure and Electrochemical Properties of La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 A2B7-type Hydrogen Storage Alloys

doi:10.11896/j.issn.1005-023X.2018.15.005

	Effect of Annealing Treatment on the Phase Structure and Electrochemical Properties of La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 A2B7-type Hydrogen Storage Alloys
	Deng, Anqiang 1,2; Luo, Yongchun1,2 ; Wang, Hao 1; Zhao, Lei 1; Luo, Yuankui 1
	2018-08-10
发表期刊	Cailiao Daobao/Materials Review
ISSN	1005023X
卷号	32 期号:8 页码:2565-2570
摘要	La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 hydrogen storage alloys were prepared by high frequency induction melting, and the as-cast alloy was annealed at 900 for 24 h. A structural analysis of the alloys showed that the as-cast alloy was composed of CaCu5-type, Ce5Co19-type and Ce2Ni7-type phases, while the annealed alloy was a single phase Ce2Ni7-type structure. Both the as-cast and annealed alloy electrodes had good activation properties. Discharge curve platform became flatter and wider after annealing treatment. The corrosion potential of the two alloy electrode was basically the same, but the as-cast alloy electrode bear higher corrosion current. The cycle stability of the annealed alloy electrode (S100=83.5%) was obviously better than that of the as-cast alloy electrode (S100=69%). In 100 electrochemical charge/discharge cycles, when the charge capacity was low, the capacity of the alloy electrodes did not degraded. 90% Cmax was the charging capacity critical point of alloy electrode capacity attenuation. The kinetic properties of both the as-cast and annealed alloy electrodes were almost the same. High rate dischargeability characteristics of as-cast alloy electrode was controlled by the hydrogen diffusion rate in alloy bulk, while the annealed alloy electrode was controlled by the charge transfer on alloys surface. © 2018, Materials Review Magazine. All right reserved.
关键词	Annealing Charge transfer Corrosion Electric discharges Electrochemical electrodes Electrochemical properties Hydrogen storage Phase structure Structural properties A2B7-type Activation property Annealing treatments Corrosion potentials Effect of annealing Electrochemical charge/discharge High frequency induction High rate dischargeability
DOI	10.11896/j.issn.1005-023X.2018.15.005
收录类别	EI
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
EI入藏号	20185106270191
EI主题词	Hydrogen storage alloys
EI分类号	408 Structural Design - 522 Gas Fuels - 525.7 Energy Storage - 537.1 Heat Treatment Processes - 701.1 Electricity: Basic Concepts and Phenomena - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 933 Solid State Physics - 951 Materials Science
来源库	Compendex
分类代码	408 Structural Design - 522 Gas Fuels - 525.7 Energy Storage - 537.1 Heat Treatment Processes - 701.1 Electricity: Basic Concepts and Phenomena - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 933 Solid State Physics - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114194
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	材料科学与工程学院; 兰州理工大学
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Deng, Anqiang,Luo, Yongchun,Wang, Hao,et al. Effect of Annealing Treatment on the Phase Structure and Electrochemical Properties of La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 A2B7-type Hydrogen Storage Alloys[J]. Cailiao Daobao/Materials Review,2018,32(8):2565-2570.
APA	Deng, Anqiang,Luo, Yongchun,Wang, Hao,Zhao, Lei,&Luo, Yuankui.(2018).Effect of Annealing Treatment on the Phase Structure and Electrochemical Properties of La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 A2B7-type Hydrogen Storage Alloys.Cailiao Daobao/Materials Review,32(8),2565-2570.
MLA	Deng, Anqiang,et al."Effect of Annealing Treatment on the Phase Structure and Electrochemical Properties of La0.63(Pr0.1Nd0.1Y0.6Sm0.1Gd0.1)0.2Mg0.17Ni3.1Co0.3Al0.1 A2B7-type Hydrogen Storage Alloys".Cailiao Daobao/Materials Review 32.8(2018):2565-2570.