Co9S8 nanotubes synthesized on the basis of nanoscale Kirkendall effect and their magnetic and electrochemical properties

One-Step Hydrothermal Synthesis of 3D Petal-like Co9S8/RGO/Ni3S2 Composite on Nickel Foam for High-Performance Supercapacitors

“…12,13 In order to enhance the capability of these active materials of Ni 3 S 2 and Co 9 S 8 , these transition metal sulfides were controlled synthesized in terms of morphology and structure so as to further improve their performance. [13][14][15] It is found that nano-sized and porous structures facilitate their capacities. 16 4 On the other hand, because of synergistic effects, compositing is an alternative method to efficiently enhance the performance of single-component active materials.…”

“…The HRTEM image of CRNS-180 (Figure 6b) confirms that Co 9 S 8 and Ni 3 S 2 nanoflakes were well crystallized with a lattice of 0.244 nm, 0.245nm, and 0.203nm which are assigned to the d-spacing of the (331) planes, (400) planes of Co 9 S 8 , and the (202) planes of Ni 3 S 2 , respectively. The concentric rings of selected area electron diffraction (SAED) pattern given in the inset ofFigure 6bconfirms the poly-crystallinity of the Co 9 S 8 and Ni 3 S 2 nanoflakes 12,15. …”

Electrochemical oxidation to construct a nickel sulfide/oxide heterostructure with improvement of capacitance

“…Similarly, XPS fitting of the high-resolution S 2p spectra (Figure 1f) resulted in a doublet at 161.8 and 163.2 eV, corresponding to S 2p 3/2 and 2p 1/2 peaks, respectively. 35 The remaining sulfide peak from Ni 3 S 2 in the S 2p spectrum of ECO-Ni 3 S 2 /NF corroborated the partial oxidation of Ni 3 S 2 during the anodic potential cycling.…”

Co<sub>9</sub>S<sub>8</sub> Nanotubes as an Efficient Catalyst for Hydrogen Evolution Reaction in Alkaline Electrolyte

“…Then, 0.6 mmol of the as-prepared Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 and 0.629 mL of a supersaturated Na 2 S aqueous solution were loaded into a Teflon liner (40 mL) with 30 ml distilled water [24]. The liner was sealed in a stainless steel autoclave and maintained at 160˚C for 8 h, then cooled naturally to room temperature.…”

“…The method used in the synthesis of Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 nanorods was adopted from those reported in ref [23] [24]. Then, 0.6 mmol of the as-prepared Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 and 0.629 mL of a supersaturated Na 2 S aqueous solution were loaded into a Teflon liner (40 mL) with 30 ml distilled water [24].…”