透明硫化镍/石墨烯复合对电极用于高效染料敏化太阳能电池
摘要
<p indent="0mm">The efficient harnessing of solar energy on a large scale is imperative for addressing the challenges posed by the energy crisis and global warming. Dye-sensitized solar cells (DSSCs) represent a promising technology for converting solar energy into electricity. Within DSSC devices, the counter electrodes (CEs) play a pivotal role by facilitating the collection of electrons from external circuits and catalyzing the reduction of iodine in the electrolyte. Presently, platinum (Pt) stands out as the optimal electrode material, attributed to its superior conductivity, electrocatalytic activity, and stability. However, the prohibitive cost of Pt constitutes a significant impediment to the widespread commercialization of dye-sensitized solar cells. Consequently, the imperative lies in the development of cost-effective electrode materials. Furthermore, conventional DSSC devices have utilized opaque CE materials, resulting in a lack of transparency in the devices. This lack of transparency poses challenges for their application in tandem cells or as architectural decorative glass. The incorporation of highly transparent CEs is essential for enhancing the versatility of DSSC devices, enabling their application in tandem cells or as architectural decorative glass. Notably, the efficiency of DSSCs with transparent CEs can be further optimized through dual-sided illumination. Among various Pt-free CE materials, nickel sulfide has demonstrated remarkable electrocatalytic activity and stability, rendering it a widely utilized CE in DSSCs. However, there is a scarcity of reports on transparent nickel sulfide CEs and their application in double-sided DSSCs. Common methods for preparing transparent electrodes include solvothermal, electrochemical deposition, atomic layer deposition, and spin-coating. The spin-coating method, distinguished by its cost-effectiveness and simplicity, is particularly advantageous. In our research, a straightforward drip-coating technique