Facile fabrication of hierarchical film composed of Co(OH)₂@Carbon nanotube core/sheath nanocables and its capacitive performance

Abstract

A uniform Co(OH)2 sheath was anchored on the surface of a conductive CNT by a facile strategy, exhibiting comparatively high specific capacitance and outstanding long cycle life stability.

Coupling Plant Polyphenol Coordination Assembly with Co(OH)2 to Enhance Electrocatalytic Performance towards Oxygen Evolution Reaction

“…This revealed that the coordination assembly did not change the basic structure of the original Co(OH) 2 and the metal-phenol coordination compound was amorphous. [39,40]. In the FT-IR spectrum of Co(OH) 2 @TA-Fe, the absorption peaks at 3415, 2922 cm −1 were attributed to aromatic O-H stretching vibration and C-H stretching, respectively.…”

“…When tannic acid was chelated with Fe 3+ ions on the surface, the XRD pattern showed no change. This revealed that the coordination assembly did not change the basic structure of the original Co(OH) 2 and the metal-phenol coordination compound was amorphous [39,40]…”

Corrosion behavior of Ti/Al laminate composites as electrode of chlor-alkali electrolysis

“…EIS is a quasi-steady-state measurement, which is able to test the electrochemical behavior of electrode without exerting great impact on the electrochemical system due to the low-amplitude perturbation signal. [20][21][22] The Nyquist plot for Ti/Al-LC obtained in saturated NaCl solution at 70 C is shown in Figure 2(b). It is observed that Nyquist plot displays one depressed semicircle within the test frequency range (from 100,000 Hz to 0.01 Hz).…”

One-step and room-temperature fabrication of carbon nanocomposites including Ni nanoparticles for supercapacitor electrodes

“…The most investigated pseudocapacitive nanoparticles have been conductive polymers and metal oxides, particularly the oxides of transition metals like nickel, cobalt, manganese, titanium, vanadium, molybdenum, tungsten and others. [26][27][28][29][30][31][32][33][34][35][36][37][38][39] The strategies used to prepare such composites can be classied as either in situ decoration of the NPs during the synthesis phase of the nanocarbon material, or post-synthesis methods in which the nanocarbon material is processed to allow for the formation of stable composites upon the addition of the NPs. Methodology-wise, the composite synthesis may proceed through diverse routes, such as solution chemistry, [40][41][42][43][44][45][46][47][48][49][50] hydrothermal or solvothermal methods, [51][52][53][54] self-assembly, [55][56][57] microwave-irradiation, [58][59][60] photo-reduction, 61 mechanical routes, 62,63 electrochemical deposition, 64,65 electrospinning or templating with a carbon precursor, 66,67 and others.…”