A kind of zinc-doped mixed transition metal sulfide electrode material and preparation method thereof

Abstract

The invention discloses a zinc-doped mixed-type transition metal sulfide electrode material and a preparation method thereof. The preparation method is as follows: adding cobalt nitrate hexahydrate, nickel nitrate hexahydrate and urea into deionized water, and putting them in a hydrothermal kettle In the process, the carbon cloth after ultrasonic treatment with deionized water was put into hydrothermal reaction and washed and dried several times; cobalt nitrate hexahydrate and zinc nitrate hexahydrate were added to methanol solution to obtain solution A, and dimethylimidazole was added to methanol Solution B is obtained from the solution, the washed and dried product is immersed in solution A, solution B is dripped into solution A, the carbon cloth is taken out, washed and dried, and then vulcanized with thioacetamide to obtain an electrode material. The prepared electrode material has uniform nickel-cobalt sulfide particles in microscopic appearance, which are connected in series on the nickel-cobalt nanowire array like candied haws, and has high specific capacitance, excellent rate performance and cycle stability.

Description

A kind of zinc-doped mixed transition metal sulfide electrode material and preparation method thereof technical field The invention belongs to the preparation field of zinc ion battery electrode material, be specifically related to a kind of zinc-doped mixed-type transition gold A sulfide electrode material and a preparation method thereof. Background technique [0002] Due to structural diversity and strong electrochemical activity, transition metal sulfides are more efficient than oxides and hydroxides. It has higher electronic conductivity, and can be used as an electrode material to obtain high specific capacitance and energy density. It has been reported in recent years. Used as a cathode material for water-based zinc-ion batteries. Mixed transition metal sulfides such as NiCo 2 S 4 , CoFe 2 S 4 , ZnCo 2 S 4 , MnCo 2 S 4 etc., due to their complex chemical composition and the synergistic effect between two or more metal elements, usu...

AI Technical Summary

Problems solved by technology

However, the cycle and rate performance of NiCoS still need to be further improved

Images