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Graphene modified metal oxide anode material and preparation process

A graphene modification, anode material technology, applied in the field of electrochemistry, to achieve the effects of improving stability and service life, improving electrocatalytic activity, and slowing down passivation speed

Inactive Publication Date: 2018-05-01
SUNRUI MARINE ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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

[0025] 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.

[0026] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0027] Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and the atomic percentages are 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 0.15 mol / L.

[0028] (2) Brushing and sintering of the coating:

[0029] 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 air-cool it.

[0030] b) Repeat step a in turn, repeat 10 times, so that the loading amount is ≥ 10g...

example 2

[0033] 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.

[0034] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0035]Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and the atomic percentages are 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 0.15 mol / L.

[0036] (2) Brushing and sintering of the coating:

[0037] 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 it at 520°C for 15 minutes, then take it out and cool it in air.

[0038] b) Repeat step a in turn, repeat 10 times, so that the loading amo...

example 3

[0041] 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.

[0042] (1) Ru-Ir-Sn-Sb-G coating solution configuration:

[0043] Dissolve a certain amount of chloroiridic acid, ruthenium trichloride, tin tetrachloride, and antimony trichloride in n-butanol or isopropanol, and the atomic percentages are Ir: 20~60%, Ru: 15~ 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 0.15 mol / L.

[0044] (2) Brushing and sintering of the coating:

[0045] 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 air-cool it.

[0046] b) Repeat step a in turn, repeat 10 times, so that the loading amount is ≥ 10g...

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Abstract

The invention discloses graphene modified metal oxide anode material and a preparation process. The graphene modified metal oxide anode material is characterized in that an active coating coats a titanium substrate, the active coating comprises RuO2, IrO2, SnO2, Sb2O3 and graphene, and coating liquid of the active coating comprises, by weight, 10-30% of Ru, 20-60% of Ir, 10-30% of Sn, 10-30% of Sband 0.1-10g / L of the graphene, wherein the total concentration of metal ions of the coating liquid is 0.10 to 0.35mol / L and the coating loading amount is larger than or equal to 10g / m<2>. Electrolysis efficiency of the anode coating in low-temperature seawater of 5 DEG C can be higher than 70%; and electrolysis efficiency of electrolysis chlorine production in the seawater with 10-20 PSUs of thelow-temperature seawater is more than or equal to 85%, and the accelerated electrolysis life is longer than or equal to 480 hours. In addition, the graphene is added into the coating, so that the bonding force between the coating and the substrate is improved, the passivation speed of the titanium substrate is relieved, stability of the coating is improved, and the service life of the coating is prolonged.

Description

technical field [0001] 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 [0002] 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) promulgated the "International Convention on the Control and Management of Ships' Ballast Water and Sediments", which ushered in a new milestone in the prevention of marine organisms intrusion, which also raised new requirements for ship ball...

Claims

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Application Information

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IPC IPC(8): C25B11/08C25B11/10C25B1/26C23C18/12C23F1/26
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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