Moreover, perovskites can be a potential material for the electrolytes to improve the stability of batteries. Additionally, with an aim towards a sustainable future, lead-free perovskites have also emerged as an important material for battery applications as seen above.
Hence, at best some of the reported organic–inorganic lead halide perovskites are possible anode (negative electrode) conversion type electrodes, but these results have nothing to do with a multifunctional photo battery (cathode) material.
Ahmad et al. demonstrated the use of 2D lead-based perovskites, namely, (C 6 H 9 C 2 H 4 NH 3) 2 PbI 4, as a photo-active electrode material in a lithium-ion battery [ Figs. 4 (a) and 4 (b) ]. 90 The battery with the iodide perovskite showed a specific capacity up to 100 mAh g −1 at 30 mA g −1.
Perovskite materials belong to a class of crystalline compounds characterized by a specific crystal structure called the perovskite structure. The general chemical formula for perovskite compounds is ABX 3, where A and B represent different cations, and X represents an anion.
Perovskite-type batteries are linked to numerous reports on the usage of perovskite-type oxides, particularly in the context of the metal–air technology. In this battery type, oxidation of the metal occurs at the anode, while an oxygen reduction reaction happens at the air-breathing cathode during discharge.
Perovskite materials are compounds with the structure of CaTiO3 and have the general formula close or derived from ABO3. They are known for accommodating around 90% of metallic elements of the periodic table at positions A and/or B, while maintaining the characteristic perovskite structure.