Development of Ti/Ni Nanolayered Structures to Be a New Candidate for Energy Storage Applications

Abstract

Development of electrochemical supercapacitor electrode is the best way to improve the performance and conductivity of the alone materials and support energy storage devices. In this work, cyanate anions have used as building blocks to build series of nanolayered materials based on Ti/Ni layered double hydroxides (LDHs). The structural and morphological characteristics of the prepared Ti/Ni LDHs were examined using different techniques. The electrochemical supercapacitive behavior of the prepared LDHs was observed in the three-assembly electrochemical cell. These results showed that the optimized ratio of the nickel and titanium plays an important role to enhance the electrochemical performance of the LDHs. The optimized Ti/Ni LDHs, which has the highest content of titanium, showed the highest specific capacitance (675 F/g) value. In this trend, this LDH also retain a high percentage of the cyclic retention after long cyclic charging-discharging process. The enhanced performance could be due to the double layer structure, enough interplanar distance between the layer, and large number of exposed active site within the double layer structure of the LDHs. Finally, although there are no reports for the electrochemical supercapacitive performance of Ti/Ni LDHs in the literature, it is interesting to produce a new candidate for energy storage applications.

Enhancement of the Supercapacitive Performance of Cobalt-tin-cyanate Layered Structures through Conversion from 2D Materials to 1D Nanofibers

“…The thermal characteristics of the second sample, CSLDH-1 in nitrogen gas, were determined by DTA, DTG and TGA, as shown in Figure 9a. The total weight loss occurred through four steps, indicating removal of surface water, interlayered water, cyanate anions and nitrate anions, respectively [14,15]. The DTG curve showed clear two peaks for the removal of the interlayered anions.…”

“…This phenomenon is in agreement with the results of Xu et al [34] that indicated the outcome of the existence of nitrate ions on the bands of LDH. The shoulder peaks recorded at 2925 cm −1 indicate the stretching OH bonds that are due to the interlayer water molecules and/or produced from the hydrogen bonds formed with cyanate ions [15,26,35,36]. The peak at 1617 cm −1 was due to the bending band of the water molecules [37].…”

“…DTA showed two endothermic peaks at 70 and 133 °C. It means that the water molecules are bonded in the lattice by two differ species-nitrate and cyanate anions [14,15]. In the second stage, 11.7 wt.% was lost, in cating the removal of the interlayered anions at 281 °C.…”

“…They consist of positively charged nanolayers and interlayered anions for charge balancing, but their nanolayers' compositions are different. LDHs contain a mixture of divalent and trivalent or tetravalent cations [13][14][15], while HDS have only divalent cations [16][17][18].…”

Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

“…Titanium nickelide (TiNi) alloys are well-known to exhibit various attractive properties [1], such as resistance to corrosion, biocompatibility, shape memory effect, superelasticity, excellent mechanical performance, and so on [2][3][4]. As such, they are extensively studied and applied in numerous fields of science and engineering, including even such unconventional and new for them areas as supercapacitors [5], sensors and actuators [6] and endodontic instruments [7].…”