Heterostructure-induced interfacial charge transfer interaction in CoS/ CoO@NAC nanosheets as a bi-functional electrocatalyst for water-splitting application
Abstract
Recently, bi-functional electrocatalytic materials have the potential for both the hydrogen evaluation reaction (HER) and oxygen evaluation reaction (OER) in the alkaline medium. In the present investigation, the cobalt sulfide/cobalt oxide hanged on the nitrogen -doped activated carbon nanosheets (CoS/CoO@NAC) as nanocomposites were synthesized through the hydrothermal and then the carbonization processes. The X-ray diffraction peaks observed in the CoS/CoO@NAC nanocomposites revealed the presence of CoS, CoO, and Ndoped activated carbon nanosheets which confirmed the formation of binary nanocomposites. The BET analysis of CoS/CoO@NAC nanocomposites resulted an enhancement of the surface area of about 1038.57 m2/g along with the pore size and pore volume of 3.23 nm and 0.442 cc/g, respectively. The CoS/CoO@NAC, nanocomposites were used for bi-functional catalysis which divulged the low over potential for both HER and OER analyses at about -0.266 V and 0.199 V vs. RHE, respectively at 10 mA/cm2 current density in the alkaline medium.
Más información
Título según WOS: | ID WOS:001215425000001 Not found in local WOS DB |
Título de la Revista: | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY |
Volumen: | 64 |
Editorial: | PERGAMON-ELSEVIER SCIENCE LTD |
Fecha de publicación: | 2024 |
Página de inicio: | 69 |
Página final: | 79 |
DOI: |
10.1016/j.ijhydene.2024.03.240 |
Notas: | ISI |