To exploit an efficient supercapacitor, improving the comprehensive properties of electrode materials has become an important goal. In this work, NiCo 2 S 4 nanosheets were successfully combined with highly conductive carboxylated carbon nanotubes (CNT-h-COOH) by electrochemical deposition, forming an interconnected porous network of NiCo 2 S 4 nanosheets/CNT composite on the nickel foam. The results showed that the deposition potential and time played important roles to influence the morphology and electrochemical performance of NiCo 2 S 4 nanosheets/CNT composite. It turned out that the NiCo 2 S 4 / CNT composite prepared by depositing at a −0.9 V for 10 min presented excellent specific capacity at 1 A g −1 (2498.12 F g −1 ), outstanding rate characteristic at 100 A g −1 (compared with 1 A g −1 , the capacitance retention was 61.1%), and exceptional cycle performance at 20 A g −1 (the capacitance retention rate after 10 000 charge/discharge cycles was 96.08%). Further, the flexible asymmetric supercapacitor (ASC) with a poly(vinyl alcohol) (PVA)/KOH gel electrolyte was obtained using commercial activated carbon as the anode and the NiCo 2 S 4 /CNT composite as the cathode. The ASC showed a high specific capacity of 215.06 F g −1 at 0.25 A g −1 , an exceptional capacitance retention rate of 89.03% after 10 000 cycles, an outstanding energy density of 76.47 Wh kg −1 at 201.01 W kg −1 , and excellent flexibility. Thereby, our study demonstrated that the electrodeposited porous NiCo 2 S 4 /CNT composite possesses a broad potential application in the area of supercapacitors.

The demand of power density has promoted the application of supercapacitors, and one hot study task for supercapacitors is high-energy-density electrode materials such as transition metal oxides or sulfides. Here,...

This paper proposes the design priority of the aesthetic elements of the TV wall layout through the analysis of concepts of Aesthetics calculation. Firstly, this paper selected 9 representative TV wall layout design samples and simplified 7 main indicators among indicators proposed by Ngo through interviews. Then, the calculation result matrix of the beauty index is calculated by Matlab, and then the subjective evaluation method is used to obtain the weight of each beauty index of the subjective evaluation method. Then, combined with the entropy method, the result is obtained in the mathematical calculation. According to the subjective evaluation method, the weights were artificially revised, and finally the weights of the seven aesthetics indicators for the layout design of the TV wall were obtained, and the priorities of the aesthetic development were sorted. Finally, verified the reliability of the mathematical modeling results through the establishment of a five-point Likert scale method. This paper establishes the design priority of the elements of TV walls layout and provides some design guidance for TV walls.