Processing and characterisation of a fine nickel oxide/zirconia/composite prepared by polymeric complex solution synthesis |
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| Affiliation: | 1. State Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai, 200072, PR China;2. SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, BP 75, 38402, St Martin d’Heres Cedex, France;1. Department of Materials Science and Engineering, China University of Petroleum at Beijing, Beijing 102249, China;2. Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, United States;1. Institute of Physical Chemistry of the Polish Academy of Sciences, ul. Kasprzaka 44/52, PL-01224 Warszawa, Poland;2. Faculty of Mathematics and Natural Sciences-School of Science, Cardinal Stefan Wyszyński University in Warsaw, ul. Wóycickiego 1/3, PL-01938 Warszawa, Poland;3. Jerzy Haber Institute of Catalysis and Surface Chemistry of the Polish Academy of Sciences, ul. Niezapominajek 8, PL-30239 Kraków, Poland;1. IPEN/CNEN, Av. Lineu Prestes, 2242, CidadeUniversitária, São Paulo-SP, 05508-000 Brazil;2. UERJ/FAT, Rod. Presidente Dutra, km 298, Resende-RJ, 27537-000 Brazil;3. UNESP/FEG, Av. Ariberto Pereira da Cunha, 333, Portal das Colinas, Guaratinguetá-SP, 12516-410 Brazil;4. ICMM, CSIC, Sor Juana Inés de la Cruz, 3, Cantoblanco, Madrid, 28049 Spain;5. CINN/CSIC-UO-PA, Avd. de la Vega, 4–6, El Entrego, Asturias, 33940 Spain;1. CNR-NANO, via G. Campi 213/a, 41125 Modena, Italy;2. Dipartimento FIM, Università di Modena e Reggio Emilia, via G. Campi 213/a, 41125 Modena, Italy;3. CNR-ISM, Via Fosso del Cavaliere 100, 00133 Roma, Italy;4. CNR-IMEM, Parco Area delle Scienze 37/a, 43124 Parma, Italy;5. Laboratorio di Nanotecnologie, Istituto di Scienze e Tecnologie Molecolari, Consiglio Nazionale delle Ricerche, via G. Fantoli 16/15, 20138 Milano, Italy |
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| Abstract: | A homogeneous dispersion of nickel in a YSZ ceramic matrix by the polymeric organic complex solution method was achieved. A YSZ powder was added to the polymeric gel containing Ni2+ cations leading to an organic resin in which the YSZ particles were embedded. By further heat treatment a composite of ultrafine nickel oxide dispersed in the YSZ matrix was attained. After sintering and reducing treatment of nanocrystalline NiO/YSZ composite, the microstructure of the Ni/YSZ cermet showed a uniform distribution of the porous metallic Ni particles of about 1–2 μm surrounded by a microporous space. The electrical properties of NiO/YSZ (55/45 wt.%) composites were studied using impedance spectroscopy in the temperature range from 100 to about 700 °C. Variations in activation energy were in agreement to the NiO electrical behaviour with increasing temperatures for polymer complex solution NiO/YSZ prepared composite, which indicates a uniform and fine-grained microstructure, in which the YSZ–YSZ and/or the NiO–NiO particle contacts were predominant. |
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