MOF nanosheet array-derived NiS with Co, N-doped carbon layer: A highly efficient oxygen evolution electrocatalyst

Spindle Nanorods of CeO2 and NiS Heterointerface Coated by the NC Layer: A High-Performance Bifunctional Electrocatalyst for Water Splitting

“…The C dl value of NC/NiS-CeO 2 is 98.94 mF cm –2 , which is much better than that of Ni-CeO 2 (1.12 mF cm –2 ), NC/NiS (83.61 mF cm –2 ), and NF (0.24 mF cm –2 ). The large C dl value of NC/NiS-CeO 2 indicates the largest ESCA, suggesting that it has the most abundant number of active sites (Figure d). , …”

“…Moreover, to eliminate the effect of sulfide on the performance of the substrate NF, the diffraction peak of NiS can be observed by directly calcining thiourea and NF under identical conditions. The difficulty in observing the diffraction peak of carbon in the XRD pattern is because of the low carbon content …”

“…The difficulty in observing the diffraction peak of carbon in the XRD pattern is because of the low carbon content. 6 To further test the structure of the NC/NiS-CeO 2 catalyst, Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR) analyses were performed. The Raman results are shown in Figure 1c.…”

“…Against the backdrop of increasingly serious environmental pollution, electrolysis water hydrogen evolution technology, as an effective means of hydrogen production, can greatly reduce environmental pollution in the production process . To advance hydrogen production, it is critical to overcome challenges associated with the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in the electrochemical process. , Currently, ruthenium/iridium (Ru/Ir) oxides and platinum (Pt)-based catalysts are regarded as the benchmark catalysts for OER and HER. , However, using precious metal materials in commercial applications results in economic strain and risks cross-contamination between positive and negative electrode materials . Therefore, developing cost-effective bifunctional electrocatalysts that are efficient and stable holds considerable practical significance.…”

“…4,5 Currently, ruthenium/iridium (Ru/ Ir) oxides and platinum (Pt)-based catalysts are regarded as the benchmark catalysts for OER and HER. 6,7 However, using precious metal materials in commercial applications results in economic strain and risks cross-contamination between positive and negative electrode materials. 8 Therefore, developing cost-effective bifunctional electrocatalysts that are efficient and stable holds considerable practical significance.…”