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AB型LaYNiMn（x=0.5,1.0,1.5）合金的结构和电化学储氢性能

稀土 2024年

作者：贺祥云王辉徐杰钟海长赵世谦 huot jacques 华南理工大学材料科学与工程学院广东省先进储能材料工程技术研究中心厦门理工学院材料科学与工程学院河南理工大学化学化工学院河南省煤炭绿色转化重点实验室魁北克大学三河分校氢能研究所

设计了AB4型La2YNi12-xMnx（x=0.5, 1.0, 1.5）储氢合金,通过优化淬火温度,制备了3R-AB4型单相La2YNi11Mn合金,探索了La-Y-Ni-Mn系AB4型超晶格相的形成规律和电化学储氢性能。研究发现,随着淬火温度的升高A5B19相转变为AB4相,在997℃得... 详细信息

设计了AB4型La2YNi12-xMnx（x=0.5, 1.0, 1.5）储氢合金,通过优化淬火温度,制备了3R-AB4型单相La2YNi11Mn合金,探索了La-Y-Ni-Mn系AB4型超晶格相的形成规律和电化学储氢性能。研究发现,随着淬火温度的升高A5B19相转变为AB4相,在997℃得到了AB4单相合金。Mn取代Ni增大了合金的晶胞体积,同时增大了[A2B4]亚单元体积,提高了合金的结构稳定性,改善了合金的电化学性能。AB4单相合金的最大放电容量为346m Ah/g,充放电循环300圈后容量为216.6 m Ah/g。

关键词：镍氢电池 La-Y-Ni系超晶格储氢合金 AB 相电化学性能

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Impact of severe plastic deformation on kinetics and thermodynamics of hydrogen storage in magnesium and its alloys

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Journal of Materials Science & Technology 2023年第15期146卷 221-239页

作者： Kaveh Edalati Etsuo Akiba Walter J.Botta Yuri Estrin Ricardo Floriano Daniel Fruchart Thierry Grosdidier Zenji Horita jacques huot Hai-Wen Li Huai-Jun Lin Ádám Révész Michael J.Zehetbauer WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER)Kyushu UniversityFukuokaJapan International Research Center for Hydrogen Energy Kyushu UniversityFukuokaJapan Departamento de Engenharia de Materiais Universidade Federal de São CarlosSao Carlos-SPBrazil Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia Department of Mechanical Engineering the University of Western AustraliaCrawleyWA 6009Australia School of Applied Sciences University of Campinas(UNICAMP)LimeiraSão PauloBrazil Institut Néel CNRS&UGA38042 GrenobleFrance JOMI-LEMAN SA 74890 FessyFrance Universitéde Lorraine Laboratory of Excellence on Design of Alloy Metals for low-mass Structures(DAMAS)MetzF-57070France Universitéde Lorraine Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux(LEM3 UMR 7239)MetzF-57070France Graduate School of Engineering Kyushu Institute of TechnologyKitakyushuJapan Magnesium Research Center Kumamoto UniversityKumamotoJapan Synchrotron Light Application Center Saga UniversitySagaJapan Hydrogen Research Institute Universitédu QuébecàTrois-Rivières3351 des ForgesTrois-RivièresQC G9A 5H7Canada Hefei General Machinery Research Institute Hefei 230031China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China Department of Materials Physics Eötvös UniversityBudapestH-1518P.O.B.32BudapestHungary Faculty of Physics University of ViennaBoltzmanngasse 5A-1090 WienAustria

Magnesium and its alloys are the most investigated materials for solid-state hydrogen storage in the form of metal hydrides,but there are still unresolved problems with the kinetics and thermodynamics of hydrogenation and dehydrogenation of this group of *** plastic deformation(SPD)methods,such as equal-channel angular pressing(ECAP),high-pressure torsion(HPT),intensive rolling,and fast forging,have been widely used to enhance the activation,air resistance,and hydrogenation/dehydrogenation kinetics of Mg-based hydrogen storage materials by introducing ultrafine/nanoscale grains and crystal lattice *** severely deformed materials,particularly in the presence of alloying additives or second-phase nanoparticles,can show not only fast hydrogen absorption/desorption kinetics but also good cycling *** was shown that some materials that are apparently inert to hydrogen can absorb hydrogen after SPD ***,the SPD methods were effectively used for hydrogen binding-energy engineering and synthesizing new magnesium alloys with low thermodynamic stability for reversible low/room-temperature hydrogen storage,such as nanoglasses,high-entropy alloys,and metastable phases including the high-pressureγ-MgH2 *** work reviews recent advances in the development of Mg-based hydrogen storage materials by SPD processing and discusses their potential in future applications.

关键词： Severe plastic deformation(SPD) Nanostructured materials Ultrafine-grained(UFG)materials Magnesium hydride(MgH_(2)) Magnesium-based alloys Hydrogen absorption Hydrogenation kinetics Hydrogen storage thermodynamics

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Regulation of Breast Cancer Progression by Phosphorylation of the Tumor Suppressor Tropomyosin-1 Alpha

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Journal of Cancer Therapy 2015年第9期6卷 783-792页

作者： Mouna Zerradi Francois Houle jacques huot Oncology Division of Laval University Hospital Research Centre(CRCHU of Quebec)and Laval University Cancer Research Centre L’Hotel-Dieu of QuebecQuebec CityCanada

Background: Tropomyosin 1 alpha chain (Tm1) is an actin-binding protein that regulates the endothelial cell response to oxidative stress following its phosphorylation at Serine 283 (S283). Tm1 is also a major tumor suppressor in breast cancer. In the present study, we investigated the role of phosphorylation of Tm1 in regulating its tumor suppressor properties. Methods: MDA MB231 breast cancer cells stably overexpressing wild type form of Tm1 or Tm1 mutants (S283A and S283E) were generated. Proliferation and cell viability were assayed by means of the enzymatic cleavage of the tetrazolium salt WST-1 to formazan dye by cellular mitochondrial dehydrogenases. Adhesion assays were performed at various periods of time on cells grown on plastic. Cell migration was evaluated by using the wound-healing assay and by measuring transendothelial migration of cancer cells. Malignant transformation in vitro was determined by using the anchorage-independent growth assay on soft agar. Results: We found that cells expressing the phosphomimetic form of Tm1 S283E/Tm1 are characterized by an increased adhesion to the substratum. Moreover, the migration of MDA-MB231/S283E/Tm1 cells in a wound closure assay is reduced compared to parental cells or those expressing the non-phosphorylatable form of Tm1 (S283A). Similarly, the transendothelial migration of MDA-MB231/S283E/Tm1 cells is also reduced as compared to the other cell lines. Moreover, we found that the cells expressing the S283A mutants form more colonies in soft agar that those expressing the S283E mutants. Conclusion: Phosphorylation of Tm1 at Ser283 contributes to its anti-tumor properties, and this effect results mainly from an increase in cell adhesion associated with a decrease in their migratory and invasive potentials.

关键词： Tropomyosin 1 Phosphorylation F-Actin Cell Migration Invasion

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掺加卤化钠改善金属镁的初始活化性能

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功能材料 2016年第12期47卷 12173-12177页

作者：邱树君马星宇王二锐黄建灵张湛褚海亮邹勇进向翠丽徐芬孙立贤 huot jacques 桂林电子科技大学材料科学与工程学院广西信息材料重点实验室广西新能源材料结构与性能协同创新中心广西桂林541004 加拿大魁北克大学三河城分校氢能研究所魁北克三河市G9A5H7

金属镁用作储氢材料时由于表面存在氧化膜,在首次吸氢反应过程中需要一定的时间活化,即存在着吸氢孕育期。为了消除这个孕育期,本文利用高能机械球磨法在金属镁中掺杂卤化钠(NaCl和NaBr)。结果表明,加入NaCl、NaBr添加剂后,样品Mg-NaCl... 详细信息

金属镁用作储氢材料时由于表面存在氧化膜,在首次吸氢反应过程中需要一定的时间活化,即存在着吸氢孕育期。为了消除这个孕育期,本文利用高能机械球磨法在金属镁中掺杂卤化钠(NaCl和NaBr)。结果表明,加入NaCl、NaBr添加剂后,样品Mg-NaCl和Mg-NaBr在2 000kPa氢气压力下,573和608K时的首次吸氢反应中均没有检测到孕育期的存在,吸氢量分别为5.6和5.0%(质量分数)。虽然利用高能机械球磨法掺杂卤化钠能显著改善金属镁的首次吸氢反应动力学性能,但在调控热力学性能方面没有发挥太大的作用。

关键词：储氢材料镁动力学掺杂卤化钠

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