MAX Phase (Nb4AlC3) For Electrocatalysis Applications
Само за регистроване кориснике
2024
Аутори
Gandara, MerieneMladenović, Dušan
Oliveira Martins, Marta de Jesus
Rakočević, Lazar
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Kruszynski de Assis, João Marcos
Šljukić, Biljana
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Sarmento Gonçalves, Emerson
Чланак у часопису (Објављена верзија)
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Метаподаци
Приказ свих података о документуАпстракт
In search for novel materials to replace noble metal-based electrocatalysts in electrochemical energy conversion and storage devices, special attention is given to a distinct class of materials, MAX phase that combines advantages of ceramic and metallic properties. Herein, Nb4AlC3 MAX phase is prepared by a solid-state mixing reaction and characterized morphologically and structurally by transmission and scanning electron microscopy with energy-dispersive X-ray spectroscopy, nitrogen-sorption, X-ray diffraction analysis, X-ray photoelectron and Raman spectroscopy. Electrochemical performance of Nb4AlC3 in terms of capacitance as well as for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is evaluated in different electrolytes. The specific capacitance Cs of 66.4, 55.0, and 46.0 F g−1 at 5 mV s−1 is determined for acidic, neutral and alkaline medium, respectively. Continuous cycling reveals high capacitance retention in three electrolyte media; moreover, increase o...f capacitance is observed in acidic and neutral media. The electrochemical impedance spectroscopy showed a low charge transfer resistance of 64.76 Ω cm2 that resulted in better performance for HER in acidic medium (Tafel slope of 60 mV dec−1). In alkaline media, the charge storage value in the double layer is 360 mF cm−2 (0.7 V versus reversible hydrogen electrode) and the best ORR performance of the Nb4AlC3 is achieved in this medium (Tafel slope of 126 mV dec−1).
Извор:
Small, 2024Финансирање / пројекти:
- Fundação para a Ciência e a Tecnologia [IST‐ID/156‐2018]
- Financiadora de Estudos e Projetos [01.22.0609.00]
- Conselho Nacional de Desenvolvimento Científico e Tecnológico [407960/2022‐8]
- Fundação de Amparo à Pesquisa do Estado de São Paulo [2022/02737‐0, 2022/02347‐7]
DOI: 10.1002/smll.202310576
ISSN: 1613-6810; 1613-6829
Scopus: 2-s2.0-85187258693
Колекције
Институција/група
VinčaTY - JOUR AU - Gandara, Meriene AU - Mladenović, Dušan AU - Oliveira Martins, Marta de Jesus AU - Rakočević, Lazar AU - Kruszynski de Assis, João Marcos AU - Šljukić, Biljana AU - Sarmento Gonçalves, Emerson PY - 2024 UR - https://vinar.vin.bg.ac.rs/handle/123456789/13098 AB - In search for novel materials to replace noble metal-based electrocatalysts in electrochemical energy conversion and storage devices, special attention is given to a distinct class of materials, MAX phase that combines advantages of ceramic and metallic properties. Herein, Nb4AlC3 MAX phase is prepared by a solid-state mixing reaction and characterized morphologically and structurally by transmission and scanning electron microscopy with energy-dispersive X-ray spectroscopy, nitrogen-sorption, X-ray diffraction analysis, X-ray photoelectron and Raman spectroscopy. Electrochemical performance of Nb4AlC3 in terms of capacitance as well as for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is evaluated in different electrolytes. The specific capacitance Cs of 66.4, 55.0, and 46.0 F g−1 at 5 mV s−1 is determined for acidic, neutral and alkaline medium, respectively. Continuous cycling reveals high capacitance retention in three electrolyte media; moreover, increase of capacitance is observed in acidic and neutral media. The electrochemical impedance spectroscopy showed a low charge transfer resistance of 64.76 Ω cm2 that resulted in better performance for HER in acidic medium (Tafel slope of 60 mV dec−1). In alkaline media, the charge storage value in the double layer is 360 mF cm−2 (0.7 V versus reversible hydrogen electrode) and the best ORR performance of the Nb4AlC3 is achieved in this medium (Tafel slope of 126 mV dec−1). T2 - Small T1 - MAX Phase (Nb4AlC3) For Electrocatalysis Applications DO - 10.1002/smll.202310576 ER -
@article{ author = "Gandara, Meriene and Mladenović, Dušan and Oliveira Martins, Marta de Jesus and Rakočević, Lazar and Kruszynski de Assis, João Marcos and Šljukić, Biljana and Sarmento Gonçalves, Emerson", year = "2024", abstract = "In search for novel materials to replace noble metal-based electrocatalysts in electrochemical energy conversion and storage devices, special attention is given to a distinct class of materials, MAX phase that combines advantages of ceramic and metallic properties. Herein, Nb4AlC3 MAX phase is prepared by a solid-state mixing reaction and characterized morphologically and structurally by transmission and scanning electron microscopy with energy-dispersive X-ray spectroscopy, nitrogen-sorption, X-ray diffraction analysis, X-ray photoelectron and Raman spectroscopy. Electrochemical performance of Nb4AlC3 in terms of capacitance as well as for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is evaluated in different electrolytes. The specific capacitance Cs of 66.4, 55.0, and 46.0 F g−1 at 5 mV s−1 is determined for acidic, neutral and alkaline medium, respectively. Continuous cycling reveals high capacitance retention in three electrolyte media; moreover, increase of capacitance is observed in acidic and neutral media. The electrochemical impedance spectroscopy showed a low charge transfer resistance of 64.76 Ω cm2 that resulted in better performance for HER in acidic medium (Tafel slope of 60 mV dec−1). In alkaline media, the charge storage value in the double layer is 360 mF cm−2 (0.7 V versus reversible hydrogen electrode) and the best ORR performance of the Nb4AlC3 is achieved in this medium (Tafel slope of 126 mV dec−1).", journal = "Small", title = "MAX Phase (Nb4AlC3) For Electrocatalysis Applications", doi = "10.1002/smll.202310576" }
Gandara, M., Mladenović, D., Oliveira Martins, M. d. J., Rakočević, L., Kruszynski de Assis, J. M., Šljukić, B.,& Sarmento Gonçalves, E.. (2024). MAX Phase (Nb4AlC3) For Electrocatalysis Applications. in Small. https://doi.org/10.1002/smll.202310576
Gandara M, Mladenović D, Oliveira Martins MDJ, Rakočević L, Kruszynski de Assis JM, Šljukić B, Sarmento Gonçalves E. MAX Phase (Nb4AlC3) For Electrocatalysis Applications. in Small. 2024;. doi:10.1002/smll.202310576 .
Gandara, Meriene, Mladenović, Dušan, Oliveira Martins, Marta de Jesus, Rakočević, Lazar, Kruszynski de Assis, João Marcos, Šljukić, Biljana, Sarmento Gonçalves, Emerson, "MAX Phase (Nb4AlC3) For Electrocatalysis Applications" in Small (2024), https://doi.org/10.1002/smll.202310576 . .