Method for electrically depositing nanometer platinum powder from ionic liquid

The invention relates to a method for electrically depositing nanometer platinum powder from ionic liquid. The method includes the steps that firstly, platinum slat (K2PtC16 and K2PtC14) is dissolved in the room-temperature ionic liquid to serve as electrolyte; and then, electrical deposition is conducted in a constant-current manner at a low temperature ranging from 25 DEG C to 65 DEG C so that nanometer platinum powder can be obtained on the surface of a negative electrode, wherein all the operations are conducted in a glove box under the protection of inert gas. The ionic liquid is [EMIm]OTF, [EMIm]TA, [EMIm]TFSI, [BMIm] OTF, [BDMIm]BF4 and [EMim] PF6 specifically, and has the beneficial effects of being low in normal-temperature viscosity and high in electric conductivity. The adopted electrolyte is simple in composition, easy to control and capable of being recycled; and meanwhile the method has the beneficial effects that the device cost is low and the product quality is stable.

本发明涉及一种从离子液体中电沉积纳米铂粉的方法。该方法包括以下步骤：首先，将铂盐（K₂PtCl₆和K₂PtCl₄）溶解在室温离子液体中作为电解液；然后，在25℃至65℃的低温下以恒流方式进行电沉积，从而在负极表面获得纳米铂粉，其中所有操作均在惰性气体保护下的手套箱中进行。所述离子液体具体为[EMIm]OTF、[EMIm]TA、[EMIm]TFSI、[BMIm]OTF、[BDMIm]BF₄和[EMim]PF₆，具有常温粘度低和电导率高的有益效果。所采用的电解液成分简单、易于控制且可回收；同时该方法具有设备成本低和产品质量稳定的有益效果。