Electrical relaxation studies of olivine type nanocrystalline LiMPO4 (M=Ni,Mn and Co) materials |
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| Institution: | 1. Department of Physics, School of Physical, Chemical and Applied Sciences, Pondicherry University, R.V. Nagar, Kalapet, Pondicherry 605014, India;2. School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, Gyeongsan-si, Gyeongsangbuk-do 712-749, South Korea;3. St. Aloysius College, Edathua, Alappuzha, Kerala 689573, India;1. LCME, FST Marrakech, Cadi Ayyad University, BP549, Avenue A. Khattabi, Marrakech, Morocco;2. Jülich Centre for Neutron Science, JCNS, and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;3. Center for Advanced Materials, Université Mohammed VI Polytechnique, Lot 660-Hay Moulay Rachid, Ben Guerir, Morocco;4. Institut Charles Gerhardt, UMR 5253 CNRS, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier cedex 5, France;5. Réseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France;6. Faculté des Sciences, Université de Liège, B-4000 Liège, Belgium;7. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;1. Instituto de Ciência e Tecnologia – Universidade Federal dos Vales do Jequitinhonha e Mucuri, CEP 39100-000 Diamantina, Brazil;2. Laboratório de Física Aplicada – Centro de Desenvolvimento da Tecnologia Nuclear, CEP 31270-901 Belo Horizonte, Brazil;3. Laboratório Nacional de Luz Síncrotron, CNPEM, CEP 13083-970 Campinas, Brazil;4. Instituto Nacional de Metrologia, Qualidade e Tecnologia – INMETRO, 25250-020 Duque de Caxias, Brazil;1. Shoei Chemical Inc. Shinjuku Mitsui Building, 1-1, Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo 163-0443, Japan;2. Department of Metallurgy and Ceramic Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan;3. Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China;1. School of Science, University of Turabo, PO Box 3030, Gurabo, PR 00778-3030, USA;2. Chemistry Department, University of Puerto Rico-Mayagüez Campus, Mayagüez, PR 00681-9000, USA;1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China;2. Hefei National Laboratory for Physical Science at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China |
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| Abstract: | The olivine type LiMPO4 (M=Ni, Mn and Co) materials were synthesized by solution combustion technique using glycine as fuel. The structural characterizations were explored to confirm the phase formation of materials. The scanning electron microscope was used to identify the morphology of olivine materials. The local structure and chemical bonding between MO6 octahedral and (PO4)3- tetrahedral groups were probed by Raman spectroscopy. Grain and grain boundaries were contributed for ion relaxation and dc conduction in olivine materials. Two orders of enhancement in ionic conductivity was observed in these olivine materials than the reported value. Among all the explored olivine samples, LiMnPO4 showed highest enhancement in conductivity due to weak Li–O bonding and largest unit cell volume. |
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| Keywords: | Inorganic compounds Chemical synthesis Electrical properties |
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