Ni/Co-MOF@aminated MXene hierarchical electrodes for high-stability supercapacitors

An urchin-like Co-doped NiS2/C nanorod array with enriched sulfur vacancies for asymmetric supercapacitors

“…4f that the NiS 2 grains are well dispersed into the carbon matrix and form a good heterostructure. 36,37 EDS analysis clearly shows the elemental composition in the three samples. Co-NiBTC in Fig.…”

“…29,44 In the low wavenumber range of Co-NiO, Co-NiS 2 and Co-NiS 2 /C, the peaks at 518 and 646 cm −1 are assigned to the E g and A 1g stretching vibration peak of M–O. 37,38…”

“…5b, two peaks of Co-NiBTC and Co-NiS 2 /C are observed around 1352 cm −1 and 1550 cm −1 , corresponding to sp 3 disordered carbon (D band) and sp 2 ordered graphitic carbon (G band), respectively, which proves the existence of amorphous carbon. 37,43 The strength ratio of D and G bands ( I D / I G = 0.96) of Co-NiS 2 /C implies a high degree of graphitization of the carbon component, favorable for its good electrical conductivity. 12 Co-NiO and Co-NiS 2 have similar Raman spectra without an obvious D-band and G-band, which demonstrates the absence of carbon.…”

“…29,44 In the low wavenumber range of Co-NiO, Co-NiS 2 and Co-NiS 2 /C, the peaks at 518 and 646 cm −1 are assigned to the E g and A 1g stretching vibration peak of M-O. 37,38 Fig. 5c shows the infrared spectra of H 3 BTC, Co-NiBTC and the Ni-Co derivatives.…”

Ice crystal-assisted intercalation of PANI within Ti3C2Tx MXene thin films for flexible supercapacitor electrodes with simultaneously high mechanical strength and rate performance

“…Yue and co-workers developed an amination stripping strategy to protect the surface functional groups of MXenes, which not only improved the stability and conductivity of resulting MXenes, but also facilitated the accessibility between the MXene based electrode and the electrolyte. 21 Therefore, developing a new surface modification strategy should be a promising approach to broaden the wide application of MXenes.…”