Preparation method of Co<0.85>Se electrocatalytic material and application of Co<0.85>Se electrocatalytic material in sensitive battery taking porphyrin as dye

Abstract

The invention discloses a preparation method of a Co<0.85>Se electrocatalytic material and application of the Co<0.85>Se electrocatalytic material in a sensitive battery taking porphyrin as a dye. Thepreparation method of the Co<0.85>Se electrocatalytic material comprises the following steps of (1) weighing selenium powder and cobalt chloride hexahydrate by an electronic analytical balance, and placing the selenium powder and the cobalt chloride hexahydrate in a small beaker; (2) adding primary water into the small beaker so that the weighed compound is dissolved, adding hydrazine hydrate, placing a magnet, and placing the small beaker on a magnetic heating agitator for stirring; (3) pouring a solution in the small beaker after stirring into a reaction kettle, and placing the reaction kettle in a drying box for reaction; and (4) cooling to a room temperature after reaction is stopped, reducing pressure and filtering, alternatively washing with the primary water and ethyl alcohol, anddrying the obtained solid in a vacuum drying box. The prepared Co<0.85>Se electrocatalytic material has favorable electrocatalytic activity and stability on I3<-> in an electrolyte.

Description

technical field [0001] The present invention relates to electrodes for sensitized batteries. More specifically, involving Co 0.85 Preparation method of Se electrocatalytic material and its application in sensitized battery with porphyrin as dye. Background technique [0002] The counter electrode is an important part of dye-sensitized solar cells (DSSCs), which is mainly responsible for collecting external circuit electrons and transferring electrons to the counter electrode / electrolyte interface, while catalyzing the reduction reaction of the oxidized electrolyte. Currently, Pt is still a common counter electrode in DSSCs. However, since Pt is a noble metal material, it is expensive, which will restrict the large-scale industrialization of DSSCs. Therefore, it is of great significance to find counter electrode materials with abundant raw materials and low prices that can replace Pt. [0003] In recent years, some inorganic chemical materials have been applied to DSSCs a...

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Problems solved by technology

However, since Pt is a noble metal material, it is expensive, which will restrict the large-scale industrialization of DSSCs.

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