Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage
Само за регистроване кориснике
2024
Аутори
Gandara, Merienede Arruda, Milena Nakagawa
Assis, João Marcos Kruszynski
Martins, Marta de Jesus Oliveira
Rakočević, Lazar
Mladenović, Dušan
Šljukić, Biljana
Gonçalves, Emerson Sarmento
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Low-cost non-noble metal electrocatalysts are currently the focus of research and development for energy conversion and storage devices. MXenes, the newest class of two-dimensional materials, have high surface area, nanometer layer thickness, hydrophilicity and high electrical conductivity that favor their performance for electrocatalytic reactions. Herein, niobium carbide MXene (Nb-MXene) was obtained from its MAX phase by chemical synthesis and characterized regarding its morphology, structure and electrochemical activity for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) as well as for charge storage in different electrolytic media. The results demonstrate the good performance of Nb-MXene for storing charge (104 F g−1 at 5 mV s−1) that increased remarkably with continuous cycling in an acidic medium. Current density for oxygen evolution of ∼32.5 mA cm−2 was reached in alkaline medium. The oxygen reduction reaction in the same media was observed to proceed via 2e...− mechanism with a Tafel slope of 114 mV dec−1. Therefore, Nb-MXene presents characteristics and performance of a promising material for electrocatalytic reactions.
Кључне речи:
Niobium MXenes / Oxygen evolution reaction / Oxygen reduction reaction / Capacitance / Energy storage / SupercapacitorsИзвор:
Applied Materials Today, 2024, 40, 102356-Финансирање / пројекти:
- Sao Paulo Research Foundation [FAPESP, grants no. 2022/02347-7, 2023/14091-0, 2022/02737-0 and 2023/ 17245-8]
- Conselho Nacional de Desenvolvimento Científico e Tecnologico [grants no. 407960/2022-8, 383409/2023-3]
- financiadora de Estudos e Projetos [grant no. 01.22.0609.00]
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200146 (Универзитет у Београду, Факултет за физичку хемију) (RS-MESTD-inst-2020-200146)
Колекције
Институција/група
VinčaTY - JOUR AU - Gandara, Meriene AU - de Arruda, Milena Nakagawa AU - Assis, João Marcos Kruszynski AU - Martins, Marta de Jesus Oliveira AU - Rakočević, Lazar AU - Mladenović, Dušan AU - Šljukić, Biljana AU - Gonçalves, Emerson Sarmento PY - 2024 UR - https://vinar.vin.bg.ac.rs/handle/123456789/13648 AB - Low-cost non-noble metal electrocatalysts are currently the focus of research and development for energy conversion and storage devices. MXenes, the newest class of two-dimensional materials, have high surface area, nanometer layer thickness, hydrophilicity and high electrical conductivity that favor their performance for electrocatalytic reactions. Herein, niobium carbide MXene (Nb-MXene) was obtained from its MAX phase by chemical synthesis and characterized regarding its morphology, structure and electrochemical activity for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) as well as for charge storage in different electrolytic media. The results demonstrate the good performance of Nb-MXene for storing charge (104 F g−1 at 5 mV s−1) that increased remarkably with continuous cycling in an acidic medium. Current density for oxygen evolution of ∼32.5 mA cm−2 was reached in alkaline medium. The oxygen reduction reaction in the same media was observed to proceed via 2e− mechanism with a Tafel slope of 114 mV dec−1. Therefore, Nb-MXene presents characteristics and performance of a promising material for electrocatalytic reactions. T2 - Applied Materials Today T1 - Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage VL - 40 SP - 102356 DO - 10.1016/j.apmt.2024.102356 ER -
@article{ author = "Gandara, Meriene and de Arruda, Milena Nakagawa and Assis, João Marcos Kruszynski and Martins, Marta de Jesus Oliveira and Rakočević, Lazar and Mladenović, Dušan and Šljukić, Biljana and Gonçalves, Emerson Sarmento", year = "2024", abstract = "Low-cost non-noble metal electrocatalysts are currently the focus of research and development for energy conversion and storage devices. MXenes, the newest class of two-dimensional materials, have high surface area, nanometer layer thickness, hydrophilicity and high electrical conductivity that favor their performance for electrocatalytic reactions. Herein, niobium carbide MXene (Nb-MXene) was obtained from its MAX phase by chemical synthesis and characterized regarding its morphology, structure and electrochemical activity for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) as well as for charge storage in different electrolytic media. The results demonstrate the good performance of Nb-MXene for storing charge (104 F g−1 at 5 mV s−1) that increased remarkably with continuous cycling in an acidic medium. Current density for oxygen evolution of ∼32.5 mA cm−2 was reached in alkaline medium. The oxygen reduction reaction in the same media was observed to proceed via 2e− mechanism with a Tafel slope of 114 mV dec−1. Therefore, Nb-MXene presents characteristics and performance of a promising material for electrocatalytic reactions.", journal = "Applied Materials Today", title = "Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage", volume = "40", pages = "102356", doi = "10.1016/j.apmt.2024.102356" }
Gandara, M., de Arruda, M. N., Assis, J. M. K., Martins, M. d. J. O., Rakočević, L., Mladenović, D., Šljukić, B.,& Gonçalves, E. S.. (2024). Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage. in Applied Materials Today, 40, 102356. https://doi.org/10.1016/j.apmt.2024.102356
Gandara M, de Arruda MN, Assis JMK, Martins MDJO, Rakočević L, Mladenović D, Šljukić B, Gonçalves ES. Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage. in Applied Materials Today. 2024;40:102356. doi:10.1016/j.apmt.2024.102356 .
Gandara, Meriene, de Arruda, Milena Nakagawa, Assis, João Marcos Kruszynski, Martins, Marta de Jesus Oliveira, Rakočević, Lazar, Mladenović, Dušan, Šljukić, Biljana, Gonçalves, Emerson Sarmento, "Nb-MXene as promising material for electrocatalysis in energy conversion (OER/ORR) and storage" in Applied Materials Today, 40 (2024):102356, https://doi.org/10.1016/j.apmt.2024.102356 . .