| Texto completo | |
| Autor(es): |
Yoshimura, Rafael G.
;
de B. Ferraz, Thiago V.
;
Zambiazi, Priscilla J.
;
Bonacin, Juliano A.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ENERGY ADVANCES; v. 3, n. 2, p. 9-pg., 2023-12-26. |
| Resumo | |
The development of efficient, robust, and low-cost electrocatalysts for the oxygen evolution reaction (OER) under mild conditions is a sustainable pathway for energy conversion and storage technologies. Cobalt Prussian blue analogue (Co-PBA) has been emerging as a potential candidate to be engineered and match such requirements. In this study, the catalytic activity performance of Co-PBA was improved by depositing over different types of graphene-based materials that act as supports, resulting in hybrid composites. The Co-PBA + r_GO N2, which is Co-PBA deposited over a reduced graphene oxide doped with N atoms (urea as N source), showed the best OER catalytic improvements in a neutral medium (0.5 mol L-1 KNO3), reducing the overpotential in 54 mV and 137 mV to reach current densities of 10 (J10) and 50 (J50) mA cm-2, respectively, in comparison to the sole electrocatalyst Co-PBA. These results indicate that the interaction between the Co-PBA and graphene-based supports plays a pivotal role in effectively enhancing the OER activity of the electrocatalyst. Graphene-based materials doped with N can act as supports to boost the electrocatalytic activity of Co-Prussian Blue in the oxygen evolution reaction (OER) under mild conditions. (AU) | |
| Processo FAPESP: | 17/11986-5 - Geração e Armazenamento de Novas Energias: trazendo desenvolvimento tecnológico para o país |
| Beneficiário: | Ana Flávia Nogueira |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 21/05976-2 - Estratégias para melhoria de desempenho de catalisadores a base de azul da Prússia em reações de oxidação de água sob condições brandas |
| Beneficiário: | Juliano Alves Bonacin |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |