Institutional Repository of Coll Mat Sci & Engn
Effect of Annealing Treatment on Structure and Electrochemical Properties of New Mg-free Y0.7La0.3Ni3.25Al0.1Mn0.15 Hydrogen Storage Alloys | |
Deng, Anqiang1,2,3; Luo, Yongchun1,2; Xia, Yuanhua4; Peng, Sihui2; Ma, Weiqin2; Zhao, Xudong2; Yang, Yang2; Hou, Xiaodong2 | |
2020-01-10 | |
发表期刊 | Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities |
ISSN | 02510790 |
卷号 | 41期号:1页码:145-154 |
摘要 | Mg-free A2B7 type Y0.7La0.3Ni3.25Al0.1Mn0.15 alloy of La-Y-Ni system was prepared by arc melting and annealed for 24 h in high purity Ar atmosphere at 800-1050. X-ray diffraction(XRD), neutron diffraction(ND), scanning electron microscopy and energy dispersive spectroscopy(SEM/EDS) and electrochemical test methods were used to research the influence of annealing temperature on the structure and properties of the alloys. Structural analysis shows that as-cast alloy consists of CaCu5, Ce5Co19, Gd2Co7 and Ce2Ni7. As the annealing temperature increases, CaCu5, Ce5Co19 and Gd2Co7 gradually decrease to disappear, while the phase abundance of Ce2Ni7 main phase increases gradually. When annealing at 900-950, the alloy is single-phase Ce2Ni7 structure. When annealing temperature continues to rise, a small amount of PuNi3 phase appears in the alloy. The maximum discharge capacity of the alloy electrodes increases first and then decreases as the annealing temperature increases. It increases from 307.6 mA•h/g for the as-cast alloy to 393.1 mA•h/g at the nnealing temperature of 900, and then decreases to 366.4 mA•h/g at the nnealing temperature of 1050. The electrochemical cycle stability of alloy electrodes increase with the increase of annealing temperature. After 100 cycles, the electrochemical capacity retention rate(S100) increases from 66% for the as-cast alloys to 88.5% at the nnealing temperature of 1050. When annealing at 900-950, the alloy electrodes have better comprehensive electrochemical properties. © 2020, Higher Education Press. All right reserved. |
关键词 | Aluminum alloys Aluminum metallography Annealing Binary alloys Calcium alloys Cerium alloys Cobalt alloys Cobalt metallography Copper alloys Copper metallography Electric discharges Electrochemical electrodes Electrochemical properties Energy dispersive spectroscopy Gadolinium alloys Hydrogen storage Hydrogen storage alloys Lanthanum alloys Magnesium alloys Magnesium metallography Manganese alloys Manganese metallography Neutron diffraction Plutonium alloys Scanning electron microscopy Structural properties Structure (composition) Yttrium metallography Annealing temperatures Annealing treatments Discharge capacities Effect of annealing Electrochemical capacities Electrochemical cycle stabilities Electrochemical test Structure and properties |
DOI | 10.7503/cjcu20190430 |
收录类别 | SCI ; SCIE ; EI |
语种 | 中文 |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Multidisciplinary |
WOS记录号 | WOS:000525759100019 |
出版者 | Higher Education Press Limited Company |
EI入藏号 | 20200808195628 |
EI主题词 | Nickel metallography |
EI分类号 | 522 Gas Fuels - 525.7 Energy Storage - 531.2 Metallography - 537.1 Heat Treatment Processes - 541.2 Aluminum Alloys - 543.2 Manganese and Alloys - 544.2 Copper Alloys - 547.2 Rare Earth Metals - 549.2 Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 622.1 Radioactive Materials, General - 701.1 Electricity: Basic Concepts and Phenomena - 801.4.1 Electrochemistry - 951 Materials Science |
来源库 | Compendex |
分类代码 | 522 Gas Fuels - 525.7 Energy Storage - 531.2 Metallography - 537.1 Heat Treatment Processes - 541.2 Aluminum Alloys - 543.2 Manganese and Alloys - 544.2 Copper Alloys - 547.2 Rare Earth Metals - 549.2 Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 622.1 Radioactive Materials, General - 701.1 Electricity: Basic Concepts and Phenomena - 801.4.1 Electrochemistry - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/115729 |
专题 | 材料科学与工程学院 党委教师工作部(人事处、教师发展中心) |
通讯作者 | Luo, Yongchun |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 3.Ningxia Univ, Sch Mech Engn, Yinchuan 750021, Ningxia, Peoples R China; 4.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621999, Sichuan, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Deng, Anqiang,Luo, Yongchun,Xia, Yuanhua,et al. Effect of Annealing Treatment on Structure and Electrochemical Properties of New Mg-free Y0.7La0.3Ni3.25Al0.1Mn0.15 Hydrogen Storage Alloys[J]. Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities,2020,41(1):145-154. |
APA | Deng, Anqiang.,Luo, Yongchun.,Xia, Yuanhua.,Peng, Sihui.,Ma, Weiqin.,...&Hou, Xiaodong.(2020).Effect of Annealing Treatment on Structure and Electrochemical Properties of New Mg-free Y0.7La0.3Ni3.25Al0.1Mn0.15 Hydrogen Storage Alloys.Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities,41(1),145-154. |
MLA | Deng, Anqiang,et al."Effect of Annealing Treatment on Structure and Electrochemical Properties of New Mg-free Y0.7La0.3Ni3.25Al0.1Mn0.15 Hydrogen Storage Alloys".Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities 41.1(2020):145-154. |
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