Graphene modified metal oxide anode material and preparation process thereof

A technology of graphene modification and anode materials, which is applied in the field of electrochemistry to achieve the effects of improving electrolysis efficiency, improving stability and service life, and slowing down passivation speed

Inactive Publication Date: 2021-12-14
SUNRUI MARINE ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are no reports in the literature and patent reports on oxide anode coatings that are suitable for ballast water management systems under low-temperature and low-salinity seawater conditions and have high electrolysis efficiency and long life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] The industrial titanium plate TA1 substrate is selected, after sandblasting, alkali washing, etching, washing with deionized water, and then storing in ethanol solution for later use.

[0027] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0028] Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and their atomic percentages are respectively Ru: 15-30%, Ir: 20- 60%, Sn: 12-30%, Sb: 15-30%, then add a small amount of hydrochloric acid, and finally add graphene G, the content is 1-10g / L, stir evenly with a stirrer, and the metal ion concentration is 0.15mol / L.

[0029] (2) Brushing and sintering of the coating:

[0030] a) Apply the coating solution evenly on the titanium plate, then dry it in an oven at 100°C for 10 minutes, and then sinter at 520°C for 15 minutes, then take it out and cool it in air.

[0031] b) Repeat step a in turn, repeat 10 times, so that the loadin...

example 2

[0034] The industrial titanium plate TA1 substrate is selected, after sandblasting, alkali washing, etching, washing with deionized water, and then storing in ethanol solution for later use.

[0035] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0036]Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and their atomic percentages are respectively Ru: 15-30%, Ir: 20- 60%, Sn: 12-30%, Sb: 15-30%, then add a small amount of hydrochloric acid, and finally add graphene G, the content is 1-10g / L, stir evenly with a stirrer, and the metal ion concentration is 0.15mol / L.

[0037] (2) Brushing and sintering of the coating:

[0038] a) Apply the active coating solution evenly on the titanium plate, then dry it in an oven at 100°C for 10 minutes, and then sinter at 520°C for 15 minutes, then take it out and air-cool it.

[0039] b) Repeat step a in turn, repeat 10 times, so that the loa...

example 3

[0042] The industrial titanium plate TA1 substrate is selected, after sandblasting, alkali washing, etching, washing with deionized water, and then storing in ethanol solution for later use.

[0043] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0044] Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and the atomic percentages thereof are respectively Ir: 20% to 60%, Ru: 15% to 30%, Sn: 12-30%, Sb: 15-30%, then add a small amount of hydrochloric acid, and finally add graphene G, the content is 1-10g / L, stir evenly with a stirrer, and the metal ion concentration is 0.15mol / L.

[0045] (2) Brushing and sintering of the coating:

[0046] a) Apply the coating solution evenly on the titanium plate, then dry it in an oven at 100°C for 10 minutes, and then sinter at 520°C for 15 minutes, then take it out and cool it in air.

[0047] b) Repeat step a in turn, repeat 10 times, so th...

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PUM

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Abstract

The invention relates to a graphene modified metal oxide anode material and a preparation process thereof. A titanium substrate is coated with an active coating, the active coating comprises RuO2, IrO2, SnO2, Sb2O3 and graphene, the coating liquid of the active coating comprises 15-30% of Ru, 20-60% of Ir, 12-30% of Sn and 15-30% of Sb, the graphene content is 1-10 g / L, the total metal ion concentration of the coating liquid is 0.15 mol / L, and the coating loading amount is greater than or equal to 10 g / m<2>. The electrolytic efficiency of the anode coating in seawater at the low temperature of 5 DEG C is higher than 70%. The electrolytic chlorine production efficiency of 10-20 PSU of low-temperature seawater is larger than or equal to 85%, and the enhanced electrolysis life is larger than or equal to 480 h. In addition, graphene is added into the coating, so that the binding force between the coating and the matrix is improved, the passivation speed of the titanium matrix is slowed down, the stability of the coating is improved, and the service life of the coating is prolonged.

Description

[0001] This application is a divisional application with an application date of December 1, 2017, an application number of 201711247614.X, and an invention title of "Graphene Modified Metal Oxide Anode Material and Preparation Process". technical field [0002] The invention relates to a metal oxide anode material suitable for electrolytic chlorine production in a low-temperature and low-salinity seawater environment and a preparation process. The metal oxide anode prepared by it can be applied to ship ballast water management systems and power plant electrolytic chlorine production An antifouling system belongs to the field of electrochemistry. Background technique [0003] Ocean-going ships have to continuously carry out seawater ballast and discharge during voyage, which leads to the mutual transmission of marine organisms in different sea areas, resulting in biological invasion. In response to the above situation, in 2004 the International Maritime Organization (IMO) pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/052C25B11/093C25B1/26C23C18/12C23F1/26
CPCC23C18/1216C23C18/1241C23F1/26C25B1/26C25B11/093C25B11/052
Inventor 王廷勇付洪田许实王辉王海涛王洪仁
Owner SUNRUI MARINE ENVIRONMENT ENG
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