Formation of graphene encapsulated cobalt–iron phosphide nanoneedles as an attractive electrocatalyst for overall water splitting

Abstract

Hierarchical CoFe–P nanoneedles encapsulated in the graphene texture are fabricated for water splitting applications.

Fabrication of nanosheet-assembled hollow copper–nickel phosphide spheres embedded in reduced graphene oxide texture for hybrid supercapacitors

“…Two discernible peaks at ∼1349 and ∼1594 cm −1 correspond to the G band and the D band, verifying the sp 2 hybridized carbon atoms and the existence of the disordered graphite carbon, respectively. 54,55 As illustrated in Fig. 2b, the I D /I G ratio of rGO (1.1) and NH-CNPS-rGO-2 (1.4) is higher than that of graphene oxide (0.76), corroborating that graphene oxide was converted into rGO.…”

“…1g-k 53 Moreover, the XRD pattern of NH-CNPS-rGO-2 reflects the characteristic signal of rGO at 24.8°(002), which can be endorsed by comparison with the pattern of the rGO. 54,55 Moreover, the XRD patterns of pure Cu 3 P and Ni 2 P samples are displayed in Fig. S12.…”

An Efficient Electrocatalyst Based on Vertically Aligned Heteroatom(B/N/P/O/S)‐Doped Graphene Array Integrated with FeCoNiP Nanoparticles for Overall Water Splitting

“…Besides, the satellite peaks of Co 2p3/2 and Co2p1/2 are discovered at the peaks located at 786.64 and 803.41 eV. [ 26 ] Compared to the metallic Co (778.1–778.2 eV), the Co 2p 3/2 peaks are positively shifted. In Ni 2p region (Figure 3d), the Ni 2p3/2 peaks at 853.5 eV and the Ni 2p1/2 peaks at 870.8 eV are assigned to Ni‐P.…”

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe2 nanosheets@NiCoSe2 nanoflowers in a graphene network

“…The D band refers to the degree of disorder, whilst the G band is the ordered graphitic sections of the carbon materials. 60,61 By calculation, as reected in Fig. 4(B), the I D /I G ratios of graphene (1.05) and FCS@NCS-G (1.36) samples are higher than that of graphene oxide (0.87), demonstrating that graphene oxide has been converted into graphene.…”

“…4(A 58,59 Besides, the XRD pattern of the FCS@NCS-G2 sample demonstrates the characteristic peak of graphene at about 24.5 (002), which can be affirmed by comparison with the XRD of graphene. 60,61 Raman spectroscopy is an indispensable technique for investigating the structural features of different carbon materials such as graphene. Fig.…”