| Organic-inorganic halide perovskites have shown remarkable progress in the field of solar energy research due to their enhanced efficiencies. However, growth of perovskite crystals is a time consuming and expensive process. To overcome these challenges, researcher came up with an idea of using inverse temperature crystallization phenomenon to grow perovskite crystals rapidly in the ambient conditions. The nucleation and growth of perovskite crystals can be accelerated by the addition of impurities and nanomaterials, such as carbon nanotubes following heterogeneous nucleation phenomenon. In this study, for the first time, we examined the effect of CNT addition on the nucleation and growth of perovskite crystals of CH3NH3PBI 3 through inverse temperature crystallization process. The Differential scanning calorimetry tests showed a decrease in the crystallization temperature with addition of CNTs. Also, increasing concentration of CNTs reduced the nucleation and growth time required. At the same time, it was assumed that the addition of CNTs would enhance the electron capturing efficiency of perovskite crystals, following which the perovskite crystals were tested for Li-ion battery electrode applications. The discharge capacity of 54.40 mAh/g was found in the first cycle, which is comparable with the specific capacity of other organic halide materials. Capacity decayed with increasing number of cycles, but crystals with CNT showed a significantly better performance compared to the electrode made one of crystals without CNT. |
