Abstract:

Perovskite structural materials play an important role in the field luminous,catalytic and other functional materials,which is a hot spot of materials science research.Perovskite hollow structure CoSn（OH）₆ nano-powder by solvent-assisted method using SnCl₄,C₂H₆O,CoCl₂ and Na₃C₆H₅O₇ as raw material.The phase structure and surface morphology of the samples were characterized by powder X-ray diffraction （XRD）,scanning electron microscopy （SEM）,transmission electron microscope（TEM） and X-ray photoelectron spectroscopy（XPS）.The electrocatalytic performances were tested by linear sweep voltammetry（LSV）.The results showed that the perovskite hollow structure CoSn（OH）₆ powder with pure phase and 150 nm particle size was successfully produced by solvent-assisted method.CoSn（OH）₆ nano-powder has a current of 35.1 mA/cm²and its Tafel slop is 72.5 mV/dec that is expected to be used in electrochemical hydrogen evolution.

Key words: perovskite, hollow structure, CoSn（OH）₆ nano-powder