Interlayer space regulating of NiMn layered double hydroxides for supercapacitors by controlling hydrothermal reaction time

One-step facile synthesis of nickel–chromium layered double hydroxide nanoflakes for high-performance supercapacitors

“…8,10 On the other hand, the high dispersion of variable valence metal ions on the lamella can provide abundant electrochemically active sites, resulting in high pseudocapacitance. [11][12][13] Over the past few decades, LDHs have attracted considerable attention for use as electrochemical supercapacitors. For example, Liu et al fabricated NiO/NiMn-LDHs by a facile two-step approach and reported a specic capacitance of 937 F g À1 at a current density of 0.5 A g À1 .…”

Hierarchical Ni–Co–Mn hydroxide hollow architectures as high-performance electrodes for electrochemical energy storage

“…Note that the crystalline structure of Co(OH) 2 and Mn(OH) 2 is similar to that of Ni(OH) 2 . 15,16 This illustrates that the replacement of some Ni 2+ by Co 2+ and Mn 2+ does not change the β-Ni(OH) 2 crystal structure in Ni–Co–Mn hydroxide. 17,18 As elucidated in SEM image Fig.…”

Metal-Containing Zinc Phosphate EDI Zeolites Synthesized by Sol–gel Assisted Hydrothermal Method

“…This is caused by the different radii of the substituted metal ions. For metal cations of the same period, the larger the atomic number, the smaller the radius and the larger the pore are, the position of diffraction peak will be slightly shifted to a small angle [38]. Compared with Fe, Co, Ni and Zn ions, their radius decreases step by step, and the pore size of the molecular sieve increases, so the diffraction peak of XRD slightly changes to the smaller 2theta position.…”