Structural and electrochemical properties of annealed La1-xYxNi3.55Mno.4Alo.3Coo.75 hydrogen storage alloys |
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| Authors: | Yulei Du Wei Li |
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| Institution: | 1. School of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China;2. Key Laboratory of Shenzhen Internet of Things Terminal Technology, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China;3. CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China;1. Department of Respiratory Medicine, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi''an 710032, China;2. Department of Geriatrics, The Central Hospital of Xianyang, 78 Renming East Road, Xianyang 712000, China;3. The Organ Transplant Institute, The Fuzhou General Hospital (DongFang Hospital), Xiamen University, 156 West Ring Road, Fuzhou 350025, China;4. The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 169 Changle West Road, Xi''an 710032, China;5. Department of Respiratory Medicine, Naval General Hospital, 6 Fucheng Road, Beijing 100048, China;6. The State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi''an 710032, China;1. National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 100101 Beijing, China;2. University of Chinese Academy of Sciences, 100049 Beijing, China;3. Institute for Cancer Genetics, Departments of Pediatrics and Genetics and Development and Irving Cancer Research Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA;4. State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, 300353 Tianjin, China;1. Chromosome Instability & Dynamics Laboratory, Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal;2. Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal;3. Graduate Program in Areas of Basic and Applied Biology (GABBA), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal;4. Instituto Nacional de Engenharia Biomédica (INEB), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal;5. Wadsworth Center, New York State Department of Health, Albany, NY 12201, USA;6. Department of Comparative Biomedical Sciences, Royal Veterinary College, University of London, London NW1 0TU, UK;7. Department of Evolution and Ecology, University of California, Davis, Davis, CA 95616, USA;8. Rensselaer Polytechnic Institute, Troy, NY 12180, USA;9. Cell Division Group, Experimental Biology Unit, Department of Biomedicine, Faculdade de Medicina, Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal;1. Department of Physics, University of Rhode Island, Kingston, RI 02881, USA;2. Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA;3. Program in Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA;4. Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA;5. Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA |
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| Abstract: | The effects of the annealing and partial substitution of Y for La on the structural and electrochemical properties of La1-xYxNi3.55Mno.4Alo.3Cro.75 (x = 0, 0.1 and 0.2) alloys were reported in the present work. The single-phased CaCu5-type structure was retained after La was partially substituted by Y. However, the increase of Y content leads to decrease of the lattice parameters and the unit-cell volume. The annealed Lao.9Yo.1Ni3.55Mno.4Alo.3Coo.75 alloys shows typical isometric microstructure, indicating that the composition segregation is improved by annealing. Y substitution for La in the alloys is effective to improve the electrochemical properties at both room temperature and high temperature. A critical substitution content of Y is found at x = 0.1. |
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