Facile one-step growth of nickel sulfide nano-architecture as binder less electrodes for efficient supercapacitor applications

• Published in: Materials science in semiconductor processing 2022-05, Vol.142, p.106524, Article 106524
• Main Authors: Shaikh, Sajeeda, Rabinal, M.K.
• Format: Article
• Language: English
• Subjects: And power density; Chemical bath deposition; Energy density; Nickel sulfide; Pseudocapacitor; Specific capacitance
• ISSN: 1369-8001; 1873-4081
• DOI: 10.1016/j.mssp.2022.106524

Active nanostructures decorated on a conducting substrate with good electrical conductivity and controlled porosity are essentially required for supercapacitors. The way to enhance the energy and power densities is by creating catalytically active electrodes of a large surface area that are made by binder-less incorporation of hierarchical nanostructures on the electrode surface. Any technique that produces such electrodes must be simple, low cost, and easily scalable for mass production. Here a facile one-step synthesis is reported to grow nickel sulfide nano-architectures on Ni foam at room temperature as supercapacitor electrodes, the studied devices show a high capability rate and excellent cyclability (tested for more than 4000 charge/discharge cycles) with a high specific capacitance of 1442 Fg-1. The designed electrodes offer a faster ion and electron transfer, a larger surface area, and a high degree of structural integrity. Hence, such electrodes form an efficient supercapacitor and hence are important for energy storage applications. [Display omitted]