CaTiO3 perovskite in the framework of activated carbon and its effect on enhanced electrochemical capacitance

The hierarchical porous architecture of activated carbons (ACs) from cotton stalks feed are fabricated with the use of TiO2 during activation. The sample shows high surface area and the partly graphitized carbon frameworks. The CaTiO3 perovskite is formed in certain amount, which could effectively accelerate ion and electron transport of ACs. Higher content and lower content of TiO2 catalysts cannot fit to the Ca atoms, leading to either the formation of amorphous TiO2 or less CaTiO3. The electrochemical performance was then restricted with the response of the transfer of ions and electrons.446