Bimetal selenide ZnSe/CoSe<2> electrode material as well as preparation method and application of bimetal selenide ZnSe/CoSe<2> electrode material
An electrode material and selenide technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of unsatisfactory electrochemical activity of electrode materials, achieve excellent cycle stability, optimize electrochemical performance, and solve the problem of The effect of poor reproducibility of electrochemical performance
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Embodiment 1
[0025] 1. Double metal selenide ZnSe / CoSe 2 Preparation of electrode material (preparation process such as figure 1 shown):
[0026] (1) Foamed nickel pretreatment: the base foamed nickel is ultrasonically cleaned with acetone, 3mol / L hydrochloric acid solution, deionized water and absolute ethanol successively to remove the nickel oxide layer on the surface to obtain the treated foamed nickel;
[0027] (2) Preparation of precursor: the treated foamed nickel and 0.025mol / L Zn(NO 3 ) 2 ·6H 2 O, 0.05mol / L Co(NO 3 ) 2 ·6H 2 O, 0.05mol / L urea, 0.1mol / L NH 4 The mixed solution of F and deionized water is placed in an autoclave, and then the autoclave is heated in an oven at 130°C for 5 hours for hydrothermal reaction, cooled to room temperature, washed with deionized water and ethanol in sequence, and dried to obtain the foamed nickel ZnSe / CoSe on 2 Precursor, that is, ZCS precursor;
[0028] (3) Selenization: The ZCS precursor and selenium powder were placed in a tube fu...
Embodiment 2
[0045] (1) Foamed nickel pretreatment: the base foamed nickel is cleaned successively with acetone, 3mol / L hydrochloric acid solution, deionized water and ethanol ultrasonically to remove the nickel oxide layer on the surface to obtain the treated foamed nickel;
[0046] (2) Preparation of precursor: the treated foamed nickel and 0.025mol / L Zn(NO 3 ) 2 ·6H 2 O, 0.05mol / L Co(NO 3 ) 2 ·6H 2 O, 0.05mol / L urea, 0.1mol / L NH 4 The mixed solution of F and deionized water is placed in an autoclave, and then the autoclave is heated in an oven at 140°C for 5 hours for hydrothermal reaction, cooled to room temperature, ultrasonically washed with deionized water and ethanol in turn, and dried to obtain foamed nickel ZnSe / CoSe on 2 Precursor, that is, ZCS precursor;
[0047] (3) Selenization: put the ZCS precursor and selenium powder in a tube furnace at a mass ratio of 1:1, and calcine and selenize at 300°C for 4 hours in an argon atmosphere to obtain the bimetallic selenide ZnSe / C...
Embodiment 3
[0049] (1) Foamed nickel pretreatment: the base foamed nickel is cleaned successively with acetone, 3mol / L hydrochloric acid solution, deionized water and ethanol ultrasonically to remove the nickel oxide layer on the surface to obtain the treated foamed nickel;
[0050] (2) Preparation of precursor: the treated foamed nickel and 0.025mol / L Zn(NO 3 ) 2 ·6H 2 O, 0.05mol / L Co(NO 3 ) 2 ·6H 2 O, 0.05mol / L urea, 0.1mol / L NH 4 The mixed solution of F and deionized water was placed in an autoclave, and then the autoclave was heated in an oven at 150°C for 5 hours for hydrothermal reaction, cooled to room temperature, washed with deionized water and ethanol in sequence, and dried to obtain the foamed nickel ZnSe / CoSe on 2 Precursor, that is, ZCS precursor;
[0051] (3) Selenization: put the ZCS precursor and selenium powder in a tube furnace at a mass ratio of 1:1, and calcine and selenize at 300°C for 4 hours in an argon atmosphere to obtain the bimetallic selenide ZnSe / CoSe ...
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