Results 81 to 90 of about 5,086 (222)

Synthesis of (Bi,Pb)-2223 superconductor powder by pechini method

Revista Brasileira de Física Tecnológica Aplicada, 2018
In this paper, we present a detailed route of synthesis to produce ceramic superconductor Bi1,6Pb0,4Sr2Ca2Cu3Ox (Bi,Pb)-2223 powder by Pechini method. The obtained polymeric precursor solution was produced by using inexpensive chemical reagents, which showed a great stability for three weeks with high concentration of BPSCCO inorganic ions.
Guilherme Botega Torsoni, Cícero Cena, Gustavo Quereza de Freitas, C.C. Carvalho   +3 more
openaire   +2 more sources

Sonochemical activation for BaTiO3 synthesis: A rapid and efficient route to the tetragonal phase

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract Barium titanate is a highly promising ferroelectric material, but its synthesis is often based on lengthy and complex processes. This paper presents the development of an ultrafast synthesis route for producing high‐purity tetragonal BaTiO3. The method combines a brief sonochemical activation (15 min) with conventional calcination. Compared to
E. C. Silva, R. L. dos Santos, S. T. Monteiro, J. P. da Silva, Y. M. C. Pinto, L. Aguilera, F. X. Nobre, M. R. Morelli, A. P. Luz, Y. Leyet   +9 more
wiley   +1 more source

Highly Active Air Electrode with Enhanced Proton Conduction via Isovalent Doping in a Layered Perovskite for Reversible Protonic Ceramic Cells

Advanced Functional Materials, Volume 35, Issue 41, October 8, 2025.
A Ni‐doped PBSCN20 air electrode is proposed as a promising air electrode material for reversible protonic ceramic cells. An isovalent doping significantly facilitates oxygen vacancy formation and proton uptake while simultaneously reducing the energy barrier for proton migration.
Jiwon Yun, Hyeongsik Shin, Seungchan Kim, Boseok Seong, Seongjae Lee, Kyeounghak Kim, Sun Hee Choi, Sihyuk Choi   +7 more
wiley   +1 more source

Investigation of Perovskite Oxide SrCo _0.8Cu _0.1Nb _0.1O _3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells [PDF]

, 2019
Single‐phase perovskite oxide SrCo0.8Cu0.1Nb0.1O3–δ was synthesized using a Pechini method. X‐ray diffraction (XRD) analysis indicated a cubic structure with a=3.8806(7) Å. The oxide material was combined with active carbon, forming a composite electrode
Lan, Rong, Tao, Shanwen, Zhen, Shigang, Zhou, Peimiao   +3 more
core   +2 more sources

Nanostructured Anodes for Solid Oxide Fuel Cells Obtained by Screen‐Printing and Infiltration

Fuel Cells, Volume 25, Issue 5, October 2025.
ABSTRACT Nanomaterials were used for the investigation of electrochemical performance tests of solid oxide fuel cells. Two different approaches were chosen to produce symmetrical nanoparticle (NP)‐based cells: screen printing and infiltration. Screen printing, as a state‐of‐the‐art manufacturing process, leads to unstable NiO/gadolinium‐doped ceria ...
Martin Michael Juckel, Yanting Liu, André Weber, Olivier Guillon, Norbert H. Menzler   +4 more
wiley   +1 more source

Preparação e caracterização de fibras e nanotubos de BiFeO3 e FeNbO4 [PDF]

, 2015
Mestrado em Engenharia FísicaEsta dissertação teve como objetivo a produção e caracterização física de fibras e nanotubos de BiFeO3 e FeNbO4. Para o desenvolvimento destes materiais utilizou-se a técnica de fusão com laser (LFZ), o método sol-gel ...
Peixoto, Marina Manuela Vieira
core  

The evolution of 'sol-gel' chemistry as a technique for materials synthesis [PDF]

, 2016
From its initial use to describe hydrolysis and condensation processes, the term ‘sol–gel’ is now used for a diverse range of chemistries.
Danks, Ashleigh, Hall, Simon, Schnepp, Z
core   +2 more sources

Femtosecond laser crystallization of YAG in yttrium aluminosilicate glasses

International Journal of Applied Glass Science, Volume 16, Issue 4, October 2025.
Abstract This work demonstrates the capability to crystallize YAG via femtosecond pulsed laser. Challenges in using melt‐quench glass are shown to restrict glass composition and have not yielded YAG via femtosecond laser crystallization. An alternative glass‐making technique was used to fabricate a range of compositions not otherwise possible.
Collin Barker, Brian Knorr, Monika Michálková, Marzieh Ghadamyari, Milan Parchoviansky, Daniel Drdlík, Dušan Galusek, Himanshu Jain, Volkmar Dierolf   +8 more
wiley   +1 more source

Characteristics of (Sr0.92Y0.08)0.85Ti1‒xNixO3‒𝛿 (x = 0.05, 0.10, 0.15, 0.20) perovskites for internal dry methane reforming in solid oxide fuel cells

Journal of the American Ceramic Society, Volume 108, Issue 10, October 2025.
Ni‐doped Sr0.92Y0.08TiO3 perovskite has been investigated to improve the catalytic activity for CO2 dry internal reforming of methane in SOFCs. A‐site‐deficient SYTN perovskites eluted 3‒5 nm sized Ni nanoparticles onto the surface. The non‐stoichiometric perovskite catalysts improved the CO2 dry reforming performance as well as enhancing ...
Jun Ho Kim, Su In Mo, Gwang Seon Park, Seung Woo Kim, Se Han Yu, Jeong Woo Yun   +5 more
wiley   +1 more source

TiO2 sintetizado por el método de precursor polimerico (Pechini): estructura de la resina intermedia [PDF]

, 2011
En este trabajo se ha utilizado el método de precursor polimérico (método de Pechini) para sintetizar dióxido de titanio, proceso que ha permitido tener un mayor control sobre la pureza del óxido y el tipo de fase que ha presentado el material obtenido,
Franco, Y., Vargas, M. A.
core