Structure design of CuO/Cu2O@C heterostructure polyhedron accumulated by hollow microspheres for high-performance lithium storage

A portable molecularly imprinted polymer-modified microchip sensor for the rapid detection of perfluorooctanoic acid

“…S4b†) that the binding energy peaks at 952.36 eV and 932.44 eV correspond to Cu 2p 1/2 and Cu 2p 3/2 of Cu 2 O, respectively. Moreover, the peaks at 953.98 eV and 934.06 eV are assigned to Cu 2p 1/2 and Cu 2p 3/2 of CuO, respectively, 35,36 which are consistent with the above XRD results. Besides, in Fig.…”

“…The high intensity of the sp 2 peak can make a great contribution to favourable electrical conductivity. 36 The two spin–orbit doublet characteristics of Ni 2+ and Ni 3+ well-matched the Ni 2p spectra, where Ni 2+ was represented by the binding energies of 878.9, 872.6, 860.8 and 853.9 eV, respectively, while Ni 3+ was denoted by the binding energies of 854.9 and 871.6 eV (Fig. S4e†).…”

Metal–organic framework derived carbon-encapsulated hollow CuO/Cu2O heterostructure heterohedron as an efficient electrocatalyst for hydrogen evolution reaction

“…There are three satellite peaks at 940.7, 943.1 and 962.1 eV. 41 Combined with XRD analysis, this indicates that heterogeneous knots of CuO and Cu 2 O can be formed, which will be greatly beneficial to HER in alkaline solution.…”

The thermal expansion exfoliation technology and lithium promoter assistant afford CuOx/graphene as a high-performance anode for lithium-ion batteries

“…2c, the Raman spectra display two obvious peaks around 1350 and 1580 cm −1 , which correspond to the D (structural defects) and G (vibration of the sp 2 -bonded carbon atoms in the hexagonal graphitic layers) peaks of the carbon material. 22 The relative peak intensities of the D and G peaks ( I D / I G ) can reflect the existence of structural defects or the reduction degree of GO. The I D / I G values of the CuO x /PGO and CuO x /Li-PGO samples are 0.89 and 0.85, respectively, which is due to the addition of lithium promoting the removal of more oxygen-containing groups in GO.…”