- Categoria
- Investigador
- Unidade Orgânica
- Department of Mechanical Engineering
- allan@ua.pt
- Ciência ID
- E410-0C26-D1B5
- ORCID iD
- 0000-0003-0386-9329
Dr. Allan Araújo holds a degree in Materials Engineering (2016) and a Master’s in Materials Science and Engineering (2018) from the Federal University of Paraíba (UFPB), and a PhD in Materials Science and Engineering (2021) from the Federal University of Rio Grande do Norte (UFRN), including a sandwich doctorate at the Centre for Mechanical Technology and Automation (TEMA), University of Aveiro, Portugal. He is currently a Junior Researcher and Core Member of TEMA at the University of Aveiro. In 2024 he was awarded the highly competitive FCT CEEC Individual contract (7th edition), ranking 4th nationally in the panel of Materials Engineering and Nanotechnology. His research focuses on solid-state electrochemistry and the development of ceramic materials and electrochemical cells for energy conversion and chemical production, particularly solid oxide technologies including solid oxide fuel cells (SOFCs) and solid oxide electrolysers (SOECs). His expertise includes mixed ionic-electronic conductors (MIECs), ceramic electrolytes and electrode materials for high-temperature electrochemical systems. His work integrates inorganic synthesis (sol-gel, combustion and solid-state reactions), ceramic processing techniques (pressing, screen printing, spin coating and sintering) and advanced characterisation methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry (TG) and dilatometry. He has particular expertise in electrochemical characterisation and impedance spectroscopy for analysing transport processes in electrochemical energy systems. Dr. Araújo has authored or co-authored 59 peer-reviewed scientific articles, 8 book chapters, 1 book and 1 patent, and has an h-index of 17 (Scopus). His work has been recognised with the CREA-PB Award (2016) for academic excellence in Materials Engineering and with an Honourable Mention in the CAPES Thesis Award (2022) in the field of Materials. He has secured over €260,000 in research funding as Principal Investigator and Co-Principal Investigator through projects supported by the Portuguese Foundation for Science and Technology (FCT) and the European Regional Development Fund. He is currently a team member of the FCT project 2023.17866.ICDT on proton ceramic fuel cells for heavy transport decarbonisation. He has supervised or co-supervised 3 completed PhD theses, 1 MSc thesis and 2 postdoctoral researchers, and currently co-supervises 4 doctoral students at UFPB. He has also hosted PhD students from Brazil for research stays at TEMA, strengthening international collaboration between Portugal and Brazil. His research activities integrate materials science, electrochemistry and energy technologies, contributing to advances in hydrogen technologies, electrochemical reactors and high-temperature energy conversion systems.
- 0financiamentos
- 0publicações
- 0revisoes científicas
Financiamentos
Individual Call to Scientific Employment Stimulus - 7th Edition
Otimização de catalisadores para células a combustível com membranas cerâmicas condutoras de prótons operando com biometano (BRL 94,560.00)
04/30/2026
2025/08787-7Bioethanol internal reforming proton ceramic fuel cell for the decarbonization of heavy transport (248 443,20€)
12/31/2027
10.54499/2023.17866.ICDTCentre for Mechanical Technology and Automation (2.361.814,22 €)
12/31/2029
10.54499/UID/00481/2025Multifunctional materials based on high entropy ceramics for in-situ magnetic field optimized energy conversion and storage devices (BRL 174,327.41)
01/31/2026
442477/2023-6Preparation of electrodes by spray pyrolysis for applications in solid state electrochemical cells (EUR 11,400.00)
02/28/2027
302887/2022-9Sustainable ammonia electrochemical synthesis via non-oxidative dehydrogenation of biomethane to ethylene using proton conducting membranes (EUR 250,000.00)
Verão com Ciência (EUR 972.24)
09/30/2022
BII - VERÃO COM CIÊNCIA_TEMA_2022Síntese, caracterização e avaliação eletroquímica de eletrodos compósitos à base de cobaltita de cálcio para células de óxido sólido
08/31/2022
-Otimização de eletrodos compósitos de cobaltita de bário e céria dopada com gadolínio para células de óxido sólido
08/31/2022
-ESTUDO TEÓRICO-EXPERIMENTAL DAS PROPRIEDADES ESTRUTURAIS E ELETROQUÍMICAS DA COBALTITA DE CÁLCIO
08/31/2022
-New generation of electrochemical ammonia formation membranes using nitride-based catalysts (EUR 250,000.00)
08/29/2024
10.54499/PTDC/CTM-CTM/2156/2020Preparation and electrochemical characterization of Ca3Co4O9-based electrodes (C349) for energy applications in solid oxide cells (EUR 26.557,57)
04/01/2021
200439/2019-7Centro de Tecnologia Mecânica e Automação
12/31/2024
10.54499/UIDB/00481/2020Programa CAPES: PROEX
11/01/2021
CAPES: 1762100 e 88882.344798/2019-01Programa CAPES: DS
2018
1614389Development of Ca3Co4O9-based electrodes for fuel cells and electrolyzers (EUR 6,500.00)
Inovação em armazenamento de energia: Aplicações de óxidos multimetálicos em sistemas de armazenamento e conversão de energia
Publicações
Unraveling OER kinetics in multicationic spinel oxides: Challenges and insights from Tafel slope analysis
Araújo, Allan J.M.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Neto, Pedro N.S.; Raimundo, Rafael A.; Vieira, Pamala S.
Applied Surface Science | 2026Solution blow spun porous cobalt oxide nanofibers via cryogenic bath as oxygen evolution catalysts
Araújo, Allan J.M.; Arzuza, Luis C.C.; Garcia, Maxwell F.L.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Menezes, Romualdo R.; Neves, Gelmires A.; Raimundo, Rafael A.
Materials Science in Semiconductor Processing | 2026Transition metal (oxy)carbides for protonic ceramic cells: Opportunities and challenges of molybdenum (oxy)carbide
Araújo, Allan J.M.; Graça, Vanessa C.D.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Mikhalev, Sergey M.
Chemical Engineering Journal | 2026One-step fabrication of self-supported MnCo2O4-reduced graphene oxide-based anodes for the alkaline oxygen evolution reaction
Araújo, Allan J.M.; Fagg, Duncan P.; Ferreira, Luciena S.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Marques, Paula A.A.P.; Raimundo, Rafael A.; Silva, Thayse R.
Journal of Physics and Chemistry of Solids | 2026Binder-free Co3O4 sheet-like morphology on 3D nickel foam for efficient alkaline water electrolysis
Araújo, Allan J.M.; Arzuza, Luis C.C.; Garcia, Maxwell F.L.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Menezes, Romualdo R.; Neves, Gelmires A.; Raimundo, Rafael A.; Santos, Jakeline R.D.
Journal of Physics and Chemistry of Solids | 2026Enhancing oxygen evolution reaction through tailored copper oxide/nickel foam interfaces
Araújo, Allan J.M.; Fagg, Duncan P.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Pereira, Thiago O.; Raimundo, Rafael A.; Santos, Jakeline R.D.; Silva, Thayse R.; Vieira, Pamala S.
Materials Science and Engineering: B | 2026Stannate-based proton-conducting materials for proton ceramic electrochemical applications
Allan J. M. Araújo; Fagg, Duncan; Loureiro, Francisco J. A.; Luemba, Alfredo
TEchMA2025 New Frontiers in Mechanical Engineering | 2025Optimisation of Electrodes for Fuel Cells Using the Electrospinning Technique
Allan J. M. Araújo; Armin Feldhoff; Francisco J. A. Loureiro; Gideon S. Grader; Holz, Laura; Itzhak I. Maor; Meirav Mann-Lahav; Vadim Beilin
TEchMA2025 International Conference, Aveiro, Portugal, 10 September 2025 | 2025Green synthesis of Ni, Co-based oxides for water oxidation applications
Alves, Ricardo F.; Andrade, Verônica de M.; Araújo, Allan J.M.; da Silva, Fausthon F.; et al; Lopes, Sávio M.; Raimundo, Rafael A.; Vieira, Pamala S.
Materials Science in Semiconductor Processing | 2025Barium stannate-based proton-conducting materials for proton ceramic electrochemical cells
Allan J. M. Araújo; Fagg, Duncan; Loureiro, Francisco J. A.; Luemba, Alfredo
Encontro com a Ciência e a Tecnologia | 2025Bifunctional MOF-on-MOF-Derived CuCo2O4 for Oxygen Evolution Reaction Electrocatalysis and Supercapacitor Electrodes
Araújo, Allan J. M.; da Silva Hortêncio, Johnnys; da Silva, Fausthon Fred; de Oliveira, André Luiz Menezes; Lemos, Sherlan Guimarães; Macedo, Daniel A.; Raimundo, Rafael A.
ChemistryOpen | 2025Structural, magnetic and electrocatalytic properties of rock salt oxide nanofibers (Ni0.2Mg0.2Zn0.2Cu0.2-xCo0.2+x)O produced by air-heated solution blow spinning (A-HSBS) for oxygen evolution reaction
Alves, Ricardo F.; Araújo, Allan J.M.; da S. Hortêncio, Johnnys; et al; Lopes, Caio M.S.; Nascimento, Emanuel P.; Oliveira Filho, Ronaldo M.; Raimundo, Rafael A.
Applied Surface Science | 2025Development of a Novel Layered Barium Cobaltite Electrode for Protonic Ceramic Cells
Allan J. M. Araújo; Antonio Lapenda; Francisco J. A. Loureiro; Graça, Vanessa C.D.; Macedo, Daniel A.; Rafael A. Raimundo
SOFC: 19th International Symposium on Solid Oxide Fuel Cells (SOFC-XIX) | 2025Understanding the processing of mullite-based ceramics from kaolin waste: a cautionary note on the inadvertent use of split-plot designs
Allan J. M. Araújo; André L. S. Pinho; Carla A. Vivacqua; Daniel A. Macedo; Liszandra F. A. Campos; Rafael A. Raimundo; Ricardo P. S. Dutra; Rivaildo M. Andrade
Journal of the Australian Ceramic Society | 2024Ca3Co4O9-Ba0.5Sr0.5Co0.8Fe0.2O3 composite catalyst for oxygen evolution reaction
Alves, Ricardo F.; Araújo, Allan J. M.; da Silva, Fausthon F.; de M. Aquino, Flavia; Lopes, Sávio M.; Macedo, Daniel A.; Raimundo, Rafael A.; Silva, Thayse R.; Vieira, Pamala S.
Journal of Solid State Electrochemistry | 2024Solution blow spun Co3O4 nanofibers as electrocatalyst for oxygen evolution processes
Araújo, Allan J.M.; Garcia, Maxwell F.L.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Menezes, Romualdo R.; Nascimento, Emanuel P.; Neves, Gelmires A.; Raimundo, Rafael A.
Ceramics International | 2024Sr2Fe1·5Mo0·5O6--based cathodes for solid oxide fuel cells: Microstructural considerations and composite formation with Pr-doped ceria
Araújo, Allan J.M.; Fagg, Duncan P.; Farias, Morena B.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Mikhalev, Sergey M.; Paskocimas, Carlos A.
International Journal of Hydrogen Energy | 2024Understanding the oxygen reduction reaction of one-dimensional Ca3Co2O6 cathodes for SOFC
Araújo, Allan J.M.; Fagg, Duncan P.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Melo, Klivia P.V.
International Journal of Hydrogen Energy | 2024A new layered barium cobaltite electrode for protonic ceramic cells
Araújo, Allan J. M.; Filho, Antonio C. L.; Graça, Vanessa C. D.; Loureiro, Francisco J. A.; Macedo, Daniel A.; Raimundo, Rafael A.
Journal of Materials Chemistry A | 2024Epoxy group and conductive network incorporation effectively enhanced electrochemical performance of MWCNTs/Ca3Co4O9 nanocomposites
Araújo, Allan J.M.; et al; Feng, Xiaomei; Gong, Ming; Shi, Zongmo; Wang, Linxiang; Wei, Jian; Zhang, Hao
Ceramics International | 2024Nickel-Copper-Carbon based electrocatalysts for oxygen evolution reaction: Sol-gel synthesis using chitosan
Araújo, Allan J.M.; Lima, Maria A.S.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Morales, Marco A.; Oliveira, João F.G. de A.; Raimundo, Rafael A.
International Journal of Hydrogen Energy | 2024Optimization of misfit calcium cobaltite oxygen electrodes for solid oxide fuel cells through electrospinning processing
Araújo, Allan J. M.; Beilin, Vadim; Feldhoff, Armin; Grader, Gideon S.; Holz, Laura I. V.; Loureiro, Francisco J. A.; Mann-Lahav, Meirav; Maor, Itzhak I.
Journal of Materials Chemistry A | 2024Enhancing oxygen reaction kinetics in lanthanum nickelate Ruddlesden-Popper electrodes via praseodymium oxide infiltration for solid oxide cells
Araújo, Allan J. M.; Fagg, Duncan P.; Farias, Morena B.; Loureiro, Francisco J. A.; Paskocimas, Carlos A.
Dalton Transactions | 2024Introduction to hydrogen as an energy vector
Araújo, Allan Jedson Menezes de; Cesario, Moisés Romolos; Loureiro, Francisco José Almeida; Macedo, Daniel A.
Hydrogen Technology | 2024Hydrogen Technology: Fundamentals and Applications
Allan J. M. Araújo; Cesario, Moisés Romolos; DANIEL ARAUJO DE MACEDO; Francisco José Almeida Loureiro
Elsevier | 2024A novel niobium (oxy)nitride-BaCe0.7Zr0.1Y0.2O3-d composite electrode for Proton Ceramic Membrane Reactors (PCMRs)
Allan J.M. Araújo; Duncan P. Fagg; Francisco J.A. Loureiro; Laura I.V. Holz; Vanessa C.D. Graça
Journal of Energy Storage | 2023Green synthesis of MnCo2O4 nanoparticles grown on 3D nickel foam as a self-supported electrode for oxygen evolution reaction
Araújo, Allan J.M.; et al; Ferreira, Luciena S.; Loureiro, Francisco J.A.; Raimundo, Rafael A.; Santos, Jakeline Raiane D.; Silva, Thayse R.; Silva, Vinícius D.
Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2023Green chemistry synthesis of Co3O4-CoO nanocomposite and electrochemical assessment for oxygen evolution reaction
Allan J. M. Araújo; Daniel A. Macedo; João Oliveira; Jonattan N. Silva; Laís C. de Lima; Márcio M. Soares; Marco A. Morales; Rafael Alexandre Raimundo; Thayse R Silva
Materials Letters | 2023Green synthesis of Co3O4 nanoparticles using psyllium husk (Plantago Ovata) and application as electrocatalyst for oxygen evolution reaction
Allan J.M. Araújo; Cleber S. Lourenço; et al; Jakeline R.D. Santos; Maitê M.S. Silva; Nailton T. Câmara; Rafael Alexandre Raimundo; Thayse R. Silva
Journal of Electroanalytical Chemistry | 2023Morphology-controlled NiFe2O4 nanostructures: Influence of calcination temperature on structural, magnetic and catalytic properties towards OER
J. M. Araújo, Allan; Lopes-Moriyama, André L.; M. S. Silva, Maitê; Macedo, Daniel A.; Morales, Marco A.; Raimundo, Rafael A.; Santos, Andarair G.; Silva, Thayse R.; Souza, Carlson P.
Journal of Electroanalytical Chemistry | 2023Nickel oxide nanocatalyst obtained by a combined sol-gel and hydrothermal method for oxygen evolution reaction
Allan J. M. Araújo; Daniel A. Macedo; Jakeline R. D. Santos; João F. G. A. Oliveira; Márcio M. Soares; Marco A. Morales; Rafael Alexandre Raimundo; Thayse R. Silva
MRS Communications | 2023Green synthesis of CuCo2O4–CuO composite nanoparticles grown on nickel foam for high-performance oxygen evolution reaction
Allan J.M. Araújo; et al; Jakeline R.D. Santos; João F.G. de A. Oliveira; Laís C. de Lima; Rafael Alexandre Raimundo; Thayse R. Silva; Vinícius D. Silva
International Journal of Hydrogen Energy | 2023Mo-Ag nanocomposite catalysts for the oxygen evolution reaction
Araújo, Allan J.M.; Câmara, Nailton T.; et al; Lourenço, Cleber S.; Medeiros, Freud A.; Morales, Marco A.; Raimundo, Rafael A.; Silva, Thayse R.
Journal of Physics and Chemistry of Solids | 2022The electrochemical promotion of nitrous oxide reduction on a lanthanum strontium iron cobalt cathode
Araújo, Allan J. M.; Fagg, Duncan P.; Graça, Vanessa C. D.; Holz, Laura I. V.; Loureiro, Francisco J. A.; Mendes, Adélio; Mendes, Diogo
International Journal of Energy Research | 2022Boosted electrochemical performance of ca-cobaltite-based composite electrodes for reversible solid oxide cells
Araújo, Allan J. M.; Fagg, Duncan P.; Graça, Vanessa C. D.; Grilo, João P. F.; Holz, Laura I. V.; Loureiro, Francisco J. A.; Macedo, Daniel A.; Paskocimas, Carlos A.
International Journal of Energy Research | 2022Changing the oxygen reaction mechanism in composite electrodes by the addition of ionic- or ambipolar-conducting phases: Series or parallel pathways
Araújo, Allan J.M.; Fagg, Duncan P.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Electrochimica Acta | 2022Use of coffee husk ash for preparation of glass-ceramics as potential sealants for solid oxide cells
Araújo, Allan J.M.; De Miranda, Auristela; Farias, Morena B.; Macedo, Daniel A.; Medeiros, Vinícius S.; Nascimento, Rubens M.; Paskocimas, Carlos A.
Ceramics International | 2022A high-performance oxygen electrode for solid oxide cells: Compositional optimisation of barium cobaltite-based composites
Araújo, Allan J.M.; Fagg, Duncan P.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Journal of Alloys and Compounds | 2022The effects of polarisation on the performance of the Ba2Co9O14–Ce0.8Gd0.2O2- composite electrode for fuel cells and electrolysers
Araújo, Allan J.M.; Fagg, Duncan P.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.; Raimundo, Rafael A.
International Journal of Hydrogen Energy | 2022Electrocatalytic oxygen reduction and evolution reactions in solid oxide cells (SOCs): A brief review
Araújo, Allan J.M.; Cesário, Moisés R.; Fagg, Duncan P.; Graça, Vanessa C.D.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Heterogeneous Catalysis | 2022Solid oxide cells (SOCs) in heterogeneous catalysis
Araújo, Allan J.M.; Cesário, Moisés R.; Fagg, Duncan P.; Loureiro, Francisco J.A.; Macedo, Daniel A.
Heterogeneous Catalysis | 2022Electrochemical ammonia synthesis: Mechanism, recent developments, and challenges in catalyst design
Araújo, Allan J.M.; Fagg, Duncan P.; Graça, Vanessa C.D.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Mikhalev, Sergey M.
Heterogeneous Catalysis | 2022Non-faradaic electrochemical modification of catalytic activity: A current overview
Araújo, Allan J.M.; Fagg, Duncan P.; Graça, Vanessa C.D.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Mendes, Adélio; Mendes, Diogo
Heterogeneous Catalysis | 2022Progress in Misfit Ca-Cobaltite Electrodes for Solid Oxide Electrochemical Cells
Allan J. M. Araújo; Araújo, Allan J. M.; et al; Fagg, Duncan P.; Graça, Vanessa C. D.; Holz, Laura I. V.; Loureiro, Francisco J. A.; Macedo, Daniel A.
Handbook of Energy Materials | 2022Synthesis of Co–Ni and Cu–Ni based-catalysts for dry reforming of methane as potential components for SOFC anodes
Aouad, Samer; Araújo, Allan J.M.; Cesário, Moisés R.; et al; Grilo, João P.F.; Loureiro, Francisco J.A.; Souza, Glageane S.; Tidahy, Haingomalala L.
Ceramics International | 2021Cordierite-based ceramics with coffee husk ash addition: I –microstructure and physical properties
Andrade, Rivaildo M.; Araújo, Allan J.M.; Araújo, Pedro A.S.; Dutra, Ricardo P.S.; Grilo, João P.F.; Macedo, Daniel A.; Nascimento, Rubens M.; Raimundo, Rafael A.
Journal of Materials Research and Technology | 2021Creating new surface-exchange pathways on the misfit Ca-cobaltite electrode by the addition of an active interlayer
Araújo, Allan J.M.; Fagg, Duncan P.; Graça, Vanessa C.D.; Grilo, João P.F.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Journal of Power Sources | 2021Composite of calcium cobaltite with praseodymium-doped ceria: A promising new oxygen electrode for solid oxide cells
Araújo, Allan J.M.; Fagg, Duncan P.; Grilo, João P.F.; Holz, Laura I.V.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
International Journal of Hydrogen Energy | 2021Non-Faradaic Electrochemical Modification of Catalytic Activity: LSCF As Electrocatalyst for Nitrous Oxide Electrochemical Reduction
Araujo, Allan Jedson Menezes; Fagg, Duncan Paul; Holz, Laura Isabel Vilas; Loureiro, Francisco José Almeida; Mendes, Adélio; Mendes, Diogo; Mikhalev, Sergey Mikhaylovich
17th International Symposium on Solid Oxide Fuel Cells (SOFC-XVII) July 18, 2021 - July 23, 2021 | 2021Composite of Ca-Cobaltite with Pr-Doped Ceria as Oxygen Electrode for Solid Oxide Electrochemical Cells
Araujo, Allan Jedson Menezes; Fagg, Duncan Paul; Grilo, João Paulo Freitas; Holz, Laura Isabel Vilas; Loureiro, Francisco José Almeida; Macedo, Daniel Araújo; Paskocimas, Carlos Alberto
17th International Symposium on Solid Oxide Fuel Cells (SOFC-XVII) July 18, 2021 - July 23, 2021 | 2021Electrical assessment of brownmillerite-type calcium ferrite materials obtained by proteic sol-gel route and by solid-state reaction using mollusk shells
Araújo, Allan J.M.; Constantinescu, Gabriel; Grilo, João P.F.; Kovalevsky, Andrei V.; Lima, Chrystian G.M.; Macedo, Daniel A.; Raimundo, Rafael A.; Silva, Rinaldo M.
Journal of Solid State Chemistry | 2021Electrical properties of Ca-doped ceria electrolytes prepared by proteic sol-gel route and by solid-state reaction using mollusk shells
Araújo, Allan J.M.; Garcia, Maxwell F.L.; Grilo, João P.F.; Macedo, Daniel A.; Nascimento, Rubens M.; Raimundo, Rafael A.
International Journal of Hydrogen Energy | 2021Polarisation mechanism of the misfit Ca-cobaltite electrode for reversible solid oxide cells
Araújo, Allan J.M.; Fagg, Duncan P.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Electrochimica Acta | 2021Plate-like Ca3Co4O9: A novel lead-free piezoelectric material
Araújo, Allan J.M.; Cao, Shuyao; Gao, Feng; Lou, Zhihao; Qin, Mengjie; Shi, Zongmo; Xu, Jie; Zhang, Ping
Applied Surface Science | 2021The Effect of Microstructural Changes on Mechanical and Electrochemical Corrosion Properties of Duplex Stainless Steel Aged for Short Periods
Araújo, Allan; Damasceno, Igor; Gomes, Rodinei; Lima, Lindolpho; Raimundo, Rafael; Silva, David; Silva, Vinícius; Simões, Thiago
Materials | 2020Processing of mullite–glass ceramics using simplex-centroid design: Densification process dominated by liquid-phase sintering
Acchar, Wilson; Alves, Hugo P.A.; Andrade, Rivaildo M.; Araújo, Allan J.M.; Campos, Liszandra F.A.; Ferreira, Heber S.; Junior, Rubens A.; Macedo, Daniel A.
Boletín de la Sociedad Española de Cerámica y Vidrio | 2020Proteic sol–gel synthesis of Gd-doped ceria: a comprehensive structural, chemical, microstructural and electrical analysis
Araújo, Allan J. M.; Fagg, Duncan P.; Grilo, João P. F.; Holz, Laura I. V.; Loureiro, Francisco J. A.; Macedo, Daniel A.; Paskocimas, Carlos A.
Journal of Materials Science | 2020Ni and Ce oxide-based hollow fibers as battery-like electrodes
Araújo, Allan J.M.; Ferreira, Luciena S.; Grilo, João P.F.; Macedo, Daniel A.; Medeiros, Eliton S.; Silva, Vinícius D.; Simões, Thiago A.; Tahir, Muhammad
Journal of Alloys and Compounds | 2020Role of oxygen vacancies on the energy storage performance of battery-type NiO electrodes
Araújo, Allan J.M.; Ferreira, Luciena S.; Macedo, Daniel A.; Morales, Marco A.; Paskocimas, Carlos A.; Silva, Thayse R.; Silva, Vinícius D.; Simões, Thiago A.
Ceramics International | 2020Proteic sol-gel synthesis, structure and battery-type behavior of Fe-based spinels (MFe2O4, M = Cu, Co, Ni)
Araújo, Allan J.M.; Ferreira, Luciena S.; Macedo, Daniel A.; Morales, Marco A.; Silva, Thayse R.; Silva, Vinícius D.; Simões, Thiago A.
Advanced Powder Technology | 2020Effects of granite waste addition on the technological properties of industrial silicate based-ceramics
Araújo, Allan J M; Campos, Liszandra F A; Dutra, Ricardo P S; Macedo, Daniel A; Sousa, Angel R O
Materials Research Express | 2020Flash sintering of one-step synthesized NiO-Ce0.9Gd0.1O1.95 (NiO-GDC) composite
Araújo, Allan J M; Gonçalves, Emanuella D; Macedo, Daniel A; Salvo, Christopher; Usuba, Jonathan B; Viswanathan, Mangalaraja Ramalinga
Materials Research Express | 2020Environmentally friendly synthesis methods to obtain the misfit [Ca2CoO3-d]0.62[CoO2] thermoelectric material
Araújo, Allan J.M.; Emerenciano, Aline A.; Grilo, João P.F.; Kovalevsky, Andrei V.; Macedo, Daniel A.; Nascimento, Rubens M.; Paskocimas, Carlos A.; Rasekh, Shahed
Materials Letters | 2019Nickel-copper based anodes for solid oxide fuel cells running on hydrogen and biogas: Study using ceria-based electrolytes with electronic short-circuiting correction
Araújo, Allan J.M.; Fagg, Duncan P.; Graça, Vanessa C.D.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Souza, Glageane S.
Journal of Power Sources | 2019On the physico-mechanical, electrical and dielectric properties of mullite-glass composites
Alves, Hugo PA.; Andrade, Rivaildo M.; Araújo, Allan JM.; Campos, Liszandra FA.; Dutra, Ricardo PS.; Grilo, João PF.; Macedo, Daniel A.
Ceramics International | 2019Designing experiments for the optimization of solid-state synthesis and characterization of alumina-based composites
Alves, Hugo P.A.; Andrade, Rivaildo M.; Araújo, Allan J.M.; Campos, Liszandra F.A.; Macedo, Daniel A.; Nascimento, Rubens M.; Paskocimas, Carlos A.; Pinho, André L.S.
Ceramics International | 2019Battery-like behavior of Ni-ceria based systems: Synthesis, surface defects and electrochemical assessment
Araújo, Allan J.M.; Grilo, João P.F.; Macedo, Daniel A.; Nascimento, Rubens M.; Paskocimas, Carlos A.; Silva, Vinícius D.; Simões, Thiago A.; Sousa, Angel R.O.
Ceramics International | 2019Síntese e caracterização de céria dopada com gadolínia e co-dopada com óxido de cobre
Araújo, Allan Jedson Menezes de; Campos, Liszandra Fernanda Araújo; Dutra, Ricardo Peixoto Suassuna; Fulgêncio, Erik Benigno Grisi de Araújo; Macedo, Daniel Araújo de; Menezes, Raquel Rodrigues do Nascimento; Silva, Thamyscira Herminio Santos da
Impactos das Tecnologias nas Engenharias 4 | 2019Dielectric and electrical properties of a mullite/glass composite from a kaolinite clay/mica-rich kaolin waste mixture
Alves, H. P. A.; Andrade, R. M.; Araújo, A. J. M.; Dutra, R. P. S.; Grilo, J. P. F.; Macedo, D. A.
Cerâmica | 2019Designing experiments for the preparation of Ni-GDC cermets with controlled porosity as SOFC anode materials: effects on the electrical properties
Araújo, Allan J.M.; Campos, Liszandra F.A.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Nascimento, Rubens M.; Paskocimas, Carlos A.
Ceramics International | 2018NiO-Ce0.9Gd0.1O1.95 Composites and their Cermets as Anode Materials for SOFC
Allan Jedson Menezes de Araújo; Cesário, Moisés R.; de F. Grilo, Joao P.; de Macedo, Daniel A.; do Nascimento, Rubens M.; Paskocimas, Carlos A.; Santos, Gabriel M.
Catalytic Materials for Hydrogen Production and Electro-oxidation Reactions | 2018NiO-CGO composite powder synthesized by co-precipitation method: material as supercapacitor electrode
Allan J. M. Araújo; Macedo, Daniel A.; Nascimento, R. M.; PASKOCIMAS, C. A.; SILVA, T. H. S.; SILVA, V. D.; SIMOES, T. A.
XVII Brazilian MRS meeting, 2018, Natal. XI Brazilian Electroceramics Symposium | 2018Structure, densification and electrical properties of Gd3+ and Cu2+ co-doped ceria solid electrolytes for SOFC applications
Allan J. M. Araújo; Fagg, Duncan; FONSECA, F. C. ; Francisco J. A. Loureiro; Grilo, João; Macedo, Daniel A.; SILVA, T. H. S.
XVII Brazilian MRS meeting, 2018, Natal | 2018One-step synthesis and microstructure of CuO-SDC composites
Araújo, A. J. M.; Dutra, R. P. S.; Firmino, H. C. T.; Macedo, D. A.; Nascimento, R. M.; Rajesh, S.
Cerâmica | 2017Electrochemical assessment of one-step Cu-CGO cermets under hydrogen and biogas fuels
Araújo, Allan J.M.; Fagg, Duncan P.; Grilo, João P.F.; Loureiro, Francisco J.A.; Macedo, Daniel A.; Sousa, Angel R.O.; Souza, Glageane S.
Materials Letters | 2017Preparation of one-step NiO/Ni-CGO composites using factorial design
Araujo, A.J.M.; Araújo, Allan J.M.; Campos, L.F.A.; et al; Grilo, J.P.F.; Grilo, João P.F.; Sousa, A.R.O.; Sousa, Angel R.O.
Ceramics International | 2016Efeitos do processamento e do teor de formador de poros na microestrutura de cermets Ni-CGO
Allan J. M. Araújo; Angel R. O. Souza; Fagg, Duncan; Francisco J. A. Loureiro; Liszandra F. A. Campos; Macedo, Daniel A.
22º CBECiMat - Congresso Brasileiro de Engenharia e Ciência dos Materiais, 2016, Natal. Materiais Cerâmicos, 2016 | 2016Processamento e caracterização de compósitos CuO/Cu-CGO obtidos por síntese em uma etapa
Allan J. M. Araújo; Angel R. O. Souza; Dutra, R. P. S.; LIMA, C. G. M. ; Macedo, Daniel A.; SOUZA, G. S.
22º CBECiMat - Congresso Brasileiro de Engenharia e Ciência dos Materiais, 2016, Natal. Materiais Compósitos | 2016Influência de parâmetros de processamento na porosidade de compósitos NiO-Ce0,9Gd0,1O1,95 obtidos pelo método dos precursores poliméricos
Allan J. M. Araújo; CAMPOS, L. F. A.; LIMA, C. G. M. ; Macedo, Daniel A.; SOUZA, A. R. O.; SOUZA, G. S.
59º Congresso Brasileiro de Cerâmica, 2015, Barra dos Coqueiros. Síntese de Pós | 2015Síntese e caracterização microestrutural de compósitos CuO-SDC
Allan J. M. Araújo; Dutra, R. P. S.; Firmino, H. C. T.; LIMA, C. G. M. ; Macedo, Daniel A.; SILVA, T. H. S.
59º Congresso Brasileiro de Cerâmica, 2015, Barra dos Coqueiros. Síntese de Pós | 2015Síntese de mulita a partir de uma mistura caulinita/alumina de transição
Allan J. M. Araújo; Alves, H. P. A.; DANTAS, R. R.; DIAS, R. B.; FERNANDES, R. N.; Macedo, Daniel A.; PORTO, I. J.; ROCHA FILHO, R. L.
59º Congresso Brasileiro de Cerâmica, 2015, Barra dos Coqueiros. Processamento | 2015Estudos do limite de solubilidade do Cu2+ na céria dopada com gadolínia
Allan J. M. Araújo; LIMA, C. G. M. ; Macedo, Daniel A.; Nascimento, R. M.; SILVA, T. H. S.; SOUSA, A. R. O.
59º Congresso Brasileiro de Cerâmica | 2015Estudo de resíduos de granito em composições de massas cerâmicas para uso em cerâmica branca
Allan J. M. Araújo; CAMPOS, L. F. A.; Dutra, R. P. S.; FERREIRA, H. S.
58º Congresso Brasileiro de Cerâmica | 2014Estudo de Resíduos de Granito em Composições de Argilas para Uso em Cerâmica Vermelha
Allan J. M. Araújo; CAMPOS, L. F. A.; Dutra, R. P. S.; SILVA, T. H. S.
58º Congresso Brasileiro de Cerâmica | 2014