Supervisões em Curso
Projectos
Caracterizacao da conducao termica em nanoescala utilizando metodos de varrimento de sonda para guiar a sintese de ceramicas termoeletricas (NANOCERAMPROBE)
ParticipanteFundação para a Ciência e a Tecnologia
thermoelectrics; scanning probe microscopy; thermal conduction; microstructureCatalisadores Celulares òxidos para Combustão Limpa em meios Porosos (LEANCOMB)
ParticipanteFundação para a Ciência e a Tecnologia
cellular ceramics, combustion, catalysts, functionalizationDesenvolvimento de novas ferrites com estrutura em camadas e condutividade mista iónica-e electrónica para aplicação como fontes alternativas de energia (PTDC/CTM/64357/2006)
ParticipanteFundação para a Ciência e a Tecnologia
Mixed conductors Ceramic membranes SOFC electrodes Ionic TransportDesign de materiais termoeletricos avancados por efeitos redox: Progressos para aplicacoes de alta temperatura . (REMOTE)
ParticipanteFundação para a Ciência e a Tecnologia
Development of new methodologies for industrial CO2-free steel production by electrowinning (SIDERWIN)
Coordenador LocalEuropean Comission
For the time being, there are no economically feasible steelmaking technologies available having the potential to meet the EU’s climate and energy targets for 2030. At best, a 15% decrease in the overall CO2 intensity of the sector could be achieved throughout the widespread dissemination of technologies that could reasonably become co...Emissão Zero de CO2: um desafio e uma visão para membranas funcionais inovadoras, multi-iónicas (CO2zero)
ParticipanteFundação para a Ciência e a Tecnologia
Enfrentando os desafios da caraterização de novos materiais e procesos térmicos (RECI/CTM-CER/0336/2012)
ParticipanteFundação para a Ciência e a Tecnologia
Propriedades térmicas de materiais Processos térmicos Termometria Estudos à nano-escalaNovel approach to Power-to-Fuel: comprehensive studies of anodic processes in Direct Carbon Solid Oxide Fuel-assisted Electrolysis Cell (DC-SOFEC)
ParticipanteOther International
Novos conceitos de catalisadores para oxi-vapor gasificação de biomassa sem alcatrões. (NOTARGAS)
ParticipanteFundação para a Ciência e a Tecnologia
Novos Materiais Compósitos de Carbonatos Fundidos/Cerâmicos p/ tecnologias Energéticas Sustentáveis c/ Captura e Utilização de CO2 (MOCO3)
ParticipanteFundação para a Ciência e a Tecnologia
The MOCO3 project focuses on the development of novel composite materials consisting of molten carbonates infiltrated in a solid matrix as functional materials in intermediate temperature fuel cells and CO2 selective membranes. MOCO3 addresses performance and lifetime of these systems by focusing on materials engineering at all length scales (at...Produção de hidrogénio verde impulsionada por Mxenes (HydroXen)
CoordenadorOther National
Este projeto de prova de conceito reconhece os resultados promissores do projeto precedente SusPhotoSolutions em relação aos novos conceitos do elétrodo para reação de evolução de hidrogénio (HER), um componente cr...SGH : Smart Green Homes (Smart Green Homes)
ParticipanteIndustry National
O Projeto Smart Green Homes (SGH) visa desenvolver soluções integradas de produtos e tecnologias para ambiente doméstico, elevando os padrões de conforto, segurança e satisfação de utilização a um novo nível e, ao mesmo tempo, dar resposta aos problemas de sustentabilidade do planeta, aumentando a eficiência energética e diminuindo as emissões d...Thermoelectric oxide composites: design through controlled interactions (TEOsINTE)
CoordenadorEuropean Comission
Thermoelectric (TE) materials can convert temperature differences directly into electricity and are nowadays considered as one of the most promising means to produce “green” electricity from the huge amount of various available waste heat sources. TE conversion is intrinsically simple, scalable and reliable, empl...Towards highly-efficient oxide thermoelectrics by structural and defects engineering (Programme for Cooperation in Science between Portugal and Germany - 441.00)
CoordenadorFundação para a Ciência e a Tecnologia
UnirCell - Sistema combinado de célula de combustível/ electrolisador para fornecimento eficiente de enregia renovável: dos materiais ao dispositivo (SAICTPAC/0032/2015)
ParticipanteFundação para a Ciência e a Tecnologia
Energia; Hidrogénio; Pilha de combustível; ElectrolisadorPublicações
Characterization of Ruddlesden-Popper La2-xBaxNiO4±δ Nickelates as Potential Electrocatalysts for Solid Oxide Cells
Zakharchuk, K; Kovalevsky, A; Yaremchenko, A
2023, MATERIALS, 16, 4.
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Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system
Ferreira, NM; Carreira, F; Kovalevsky, AV; Costa, FM; Valente, MA
2023, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 575.
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Low-Temperature Electrowinning of Iron from Mixed Hematite-Magnetite Alkaline Suspensions
Boehme, C; Starykevich, M; Constantinescu, G; Kovalevsky, AV; Lopes, DV
2023, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 170, 5.
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Significant reduction in processing time for Ca0.95Ce0.05MnO3 thermoelectric ceramics
Sotelo, A; Amirkhizi, P; Dura, OJ; Garcia, G; Asensio, AC; Torres, MA; Madre, MA; Kovalevsky, A; Rasekh, S
2023, CERAMICS INTERNATIONAL, 49, 23, 37793-37799.
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MnFe2O4-based spinels by mechanochemical and thermochemical reaction of siderite and MnO2 powder mixtures
Antunes, I; Ruivo, LCM; Tarelho, LAC; Yaremchenko, AA; Kovalevsky, AV; Frade, JR
2023, CERAMICS INTERNATIONAL, 49, 11, 19495-19504.
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Synthesis and characterization of Ba(Fe,Zr,Ni)O3-δ perovskites for potential electrochemical applications
Zakharchuk, K; Kovalevsky, A; Yaremchenko, A
2023, JOURNAL OF ALLOYS AND COMPOUNDS, 956.
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Quantitative Characterization of Local Thermal Properties in Thermoelectric Ceramics Using "Jumping-Mode" Scanning Thermal Microscopy
Alikin, D; Zakharchuk, K; Xie, WJ; Romanyuk, K; Pereira, MJ; Arias-Serrano, BI; Weidenkaff, A; Kholkin, A; Kovalevsky, AV; Tselev, A
2023, SMALL METHODS, 7, 4.
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Design of laser-induced graphene electrodes for water splitting
Lopes, DV; Santos, NF; Moura, JP; Fernandes, AJS; Costa, FM; Kovalevsky, A
2023, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 48, 11, 4158-4172.
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Anomalous thermal conductivity of alkaline-earth-metal-substituted EuTiO3 induced by resonant scattering
Xiao, XX; Xie, WJ; Philippi, K; Liu, YM; Skokov, K; Radulov, IA; Widenmeyer, M; Kovalevsky, A; Shen, C; Zhang, HB; Checchia, S; Scavini, M; He, J; Weidenkaff, A
2023, MATERIALS TODAY PHYSICS, 35.
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Assessment of the laser floating zone processing of thermoelectric CuFe1-xNixO2 delafossites and their magnetic characterisation
Ferreira, NM; Grillo, JG; Ferro, MC; Dura, OJ; Madre, MA; Kovalevsky, AV; Costa, FM; Sotelo, A
2022, JOURNAL OF ALLOYS AND COMPOUNDS, 918.
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Defects Engineering for Performing SrTiO3-Based Thermoelectric Thin Films: Principles and Selected Approaches

In Zhang J., Jung YG. (Eds.), Advanced Ceramic and Metallic Coating and Thin Film Materials for Energy and Environmental Applications
Andrei V. Kovalevsky
2018, 91-120, Cham, Springer.
ISBN:
978-3-319-59905-2
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Thermoelectric Materials and the Measurement of Their Electrical Properties

In M.P.F. Graça (Eds.), Electrical Measurements: Introduction, Concepts and Applications
F. Amaral, N. M. Ferreira, A. V. Kovalevsky
2018, 199-224, Nova Science Publishers.
ISBN:
978-1-53612-973-1
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Although classical extractive metallurgy is well-established, and energy consumption per tonne of produced steel has been reduced by 50% in recent years, this sector is now facing stronger pressure to lower greenhouse gas emissions, and to comply with stricter international regulations. Thus, from a broad environmental perspective, one seeks new strategies for carbon-lean iron extraction, with emphasis on electrolysis.
Mixed ionic-electronic conductors (MIECs) have been and continue to be of a strategic interest for various energy conversion applications, chemical production and environmental monitoring. These include fuel cells, oxygen permeation membranes, proton-conducting ceramic membranes, batteries and sensors. In a solid oxide fuel cell (SOFC) concept, the MIEC materials provide an enhancement of oxygen reduction reaction kinetics at the cathode, thus facilitating lower-temperature operation and enabling faster start-up times, improved stability and easier thermal management. The use of MIEC oxygen membranes has attracted much attention due to simplicity in construction and operation of reactors for partial oxidation of hydrocarbon feedstock. A dense MIEC membrane delivers pure oxygen from air to the hydrocarbon feed stream, driven by the gradient in partial pressure of oxygen across the membrane. The flux of oxygen-related defects (oxygen vacancies or interstitials) is compensated by a flux of electronic charge carriers. The aim to realize high oxygen fluxes through such membranes requires both fast surface oxygen exchange and ion diffusion in the bulk, achievable via structural tuning of the MIEC materials and design of the membrane architecture.