Results 71 to 80 of about 5,086 (222)

Unveiling Entropy‐Driven Performance Enhancement in Double Perovskite Oxygen Electrodes for Protonic Ceramic Electrochemical Cells

Advanced Energy Materials, Volume 15, Issue 47, December 16, 2025.
Leveraging configurational entropy, high‐entropy double perovskite oxides (HEDPOs) enable unprecedented electrochemical performance in protonic ceramic electrochemical cells, achieving 1.77 W·cm−2 at 650 °C and 4.42 A·cm−2 at 1.3 V. Entropy‐stabilized structures facilitate rapid proton and oxygen ion transport with enhanced surface kinetics ...
Seeun Oh, Incheol Jeong, Dongyeon Kim, Hyeonggeun Kim, Ki‐Min Roh, Kang Taek Lee   +5 more
wiley   +1 more source

Evaluación de la actividad fotocatalítica de los compuestos A2La2Ti3O10 (A= K, Na, H) a diferentes cargas de cocatalizador [PDF]

, 2016
En este artículo se presenta la evaluación de los compuestos A2La2Ti3O10 (A= K, Na y H) frente a la degradación del azul de metileno cuando dichos compuestos se impregnan con NiO, las impregnaciones se efectúan con 0.01%, 0.05% ,0.1% y 0.2% de carga de ...
Díaz Ocampo, Gerardo Obdulio, Osorio Vélez, Jefferson   +1 more
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Sol–gel synthesis, X-ray photoelectron spectroscopy and electrical conductivity of Co-doped (La, Sr)(Ga, Mg)O3−δ perovskites [PDF]

, 2007
La0.8Sr0.2Ga0.8Mg0.2−xCoxO3−δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol–gel method. The powders were used to prepare highly phase-pure LSGMC sintered pellets with controlled composition and ...
Falsetti, A, Knauth, P, Polini, R, Schäf, O, Traversa, E   +4 more
core   +1 more source

Lead‐Free (K0.5Na0.5)NbO3 Unmodified Piezoceramics: A Reduction in the Energetic Budget of Solid State Synthesis and Sintering

Chemistry–Methods, Volume 5, Issue 12, November 2025.
The temperature of the solid‐state synthesis of pure (K0.5Na0.5)NbO3 piezo‐composition is reduced by using the niobium pentoxide reactant in the mixture of reagents after attrition milling for only 3h: a majoritarian (57 wt.% of the total Nb2O5 content) orthorhombic polymorph Pbam.
Maria Dore, José F. Bartolomé, Sonia Lopez‐Esteban, Marzia Mureddu, Costantino Cau, Stefano Enzo, Álvaro García, Sebastiano Garroni, Lorena Pardo   +8 more
wiley   +1 more source

Temperature dependent tunability data and modelling in the paraelectric Ba0.7Sr0.3TiO3 solid solutions [PDF]

Processing and Application of Ceramics, 2009
The fi eld dependence of the dielectric constant (dc-tunability) as a function of temperature in (Ba,Sr)TiO3 ceramics was investigated. Dense and homogeneous BaxSr1-xTiO3 ceramics prepared by Pechini method show low losses, high dielectric constant of ...
Lavinia Petronela Curecheriu, Liliana Mitoseriu, Adelina Ianculescu   +2 more
doaj  

Pechini synthesis and microstructure of nickel-doped copper chromites

Materials Research, 2005
Spinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments.
Patrícia Mendonça Pimentel, Antonio Eduardo Martinelli, Dulce Maria de Araújo Melo, Anne Michelle Garrido Pedrosa, Jardel Dantas Cunha, Carlos Neco da Silva Júnior   +5 more
doaj   +1 more source

Environmental-friendly yellow pigment based on Tb and M (M = Ca or Ba) co-doped Y2O3 [PDF]

, 2013
A yellow inorganic ceramic pigment with general formula Y1.86−xMxTb0.14O3−x/2 (M = Ca and/or Zn) with x = 0.06, 0.32 and 0.64 were synthesized by a modified Pechini method. XRD, SEM and HRTEM/EDX analysis showed the formation of solid solution at 1300 °C
Beltrán Mir, Héctor, Cordoncillo, Eloisa, De la Luz, Verónica, Prades Tena, Marta   +3 more
core   +1 more source

Synthesis‐Driven Functionality in High‐Entropy Materials

Small, Volume 21, Issue 44, November 6, 2025.
This review explores how synthesis techniques shape the structure, morphology, and functional properties of high‐entropy materials for energy and electronic applications. By comparing diverse methods through nine key criteria and linking them to material performance, the work offers a practical framework to guide synthesis selection for targeted ...
Anurag Khandelwal, George Mathew, Subramshu Bhattacharya, Alexander Colsmann, Gabriel Cadilha Marques, Miriam Botros, Florian Strauss, Jiangyuan Xing, John Silvister Raju, Arivazhagan Ponnusamy, Jasmin Aghassi‐Hagmann, Torsten Brezesinski, Simon Schweidler, Ben Breitung   +13 more
wiley   +1 more source

Effects of the atmosphere and substrate on the crystallization of PLZT thin films

Materials Research, 2000
Lead lanthanum zirconate titanate [PLZT (9/65/35)] thin films were prepared by dip-coating on Si (100) or Si/Ti/Pt (100) substrates using a polymeric precursor solution and annealed at 650 °C for 3 h. Perovskite phase formation of the PLZT thin films and
A.Z. Simões, A.H.M. Gonzalez, M.A. Zaghete, J.A. Varela, B.D. Stojanovic   +4 more
doaj   +1 more source

Síntese e caracterização de materiais termoelétricos baseados no sistema CA-Co-O [PDF]

, 2014
Mestrado em Engenharia FísicaOs óxidos de metais, como é o caso dos óxidos de cálcio e cobalto, são materiais de elevado interesse tecnológico atendendo às suas propriedades termoelétricas, o que poderá favorecer a sua utilização como conversor de ...
Miyazawa, Keiji
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