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Carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material for manganese electrodeposition and preparation method

An anode material and carbon fiber technology, applied in electrodes, electrolytic coatings, metal material coating processes, etc., can solve the problems of expensive titanium-based coatings, poor conductivity of electrode plates, large one-time investment, etc. The production of mud, the improvement of binding force, and the good effect of chlorine corrosion resistance

Active Publication Date: 2019-06-14
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the pure titanium plate is easily passivated at low temperature and the conductivity of the electrode plate becomes poor, it is necessary to treat the surface of the titanium plate, and the titanium-based coating is expensive, and the one-time investment is large when it is industrialized.

Method used

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  • Carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material for manganese electrodeposition and preparation method
  • Carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material for manganese electrodeposition and preparation method
  • Carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material for manganese electrodeposition and preparation method

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Embodiment 1

[0029]The carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment is made of carbon fiber substrate, Ni-Co coated on the carbon fiber substrate 3 o 4 The bottom layer, the Sn-Co-RuOx intermediate layer covering the bottom layer, and the amorphous Pb-Mn-RuOx active layer covering the Sn-Co-RuOx intermediate layer. The Ni-Co 3 o 4 The bottom layer is a composite coating, and the Co in the composite coating 3 o 4 The composition is 2.85-10wt%, and the Sn:Co:Ru molar ratio in the middle layer, that is, the Sn-Co-RuOx coating is (54-80):(18-32):(1-10); amorphous Pb-Mn - The molar ratio of Pb:Mn:Ru in the RuOx active layer is (42-70):(24-48):(2-12).

[0030] The preparation method of the carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment, the specific steps are as follows:

[0031] (1) Pretreatment of the carbon fiber matrix: firstly remove the glue, and heat the carbon fiber matrix at 400-800°C under the p...

Embodiment 2

[0037] The carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment is made of carbon fiber substrate, Ni-Co coated on the carbon fiber substrate 3 o 4 The bottom layer, the Sn-Co-RuOx intermediate layer covering the bottom layer, and the amorphous Pb-Mn-RuOx active layer covering the Sn-Co-RuOx intermediate layer. Among them, Ni-Co 3 o 4 Co in the composite coating 3 o 4 The composition is 8wt%, the Sn:Co:Ru molar ratio in the Sn-Co-RuOx coating is 60:28:10; the Pb:Mn:Ru molar ratio in the amorphous Pb-Mn-RuOx active layer is 50:36 :10.

[0038] The preparation method of the carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment, the specific steps are as follows:

[0039] (1) Pretreatment of carbon fiber matrix: firstly remove glue, heat treatment at 500°C under the protection of nitrogen, so that the active specific surface of carbon fiber increases, and at the same time avoid the broken wire damage of ...

Embodiment 3

[0046] The carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment is made of carbon fiber substrate, Ni-Co coated on the carbon fiber substrate 3 o 4 The bottom layer, the Sn-Co-RuOx intermediate layer covering the bottom layer, and the amorphous Pb-Mn-RuOx active layer covering the Sn-Co-RuOx intermediate layer. Among them Ni-Co 3 o 4 Co in the composite coating 3 o 4 The composition is 2.85wt%, the Sn:Co:Ru molar ratio in the Sn-Co-RuOx coating is 54:18:1; the Pb:Mn:Ru molar ratio in the amorphous Pb-Mn-RuOx active layer is 42: 24:12.

[0047] The preparation method of the carbon fiber-based amorphous Pb-Mn-RuO gradient anode material of the present embodiment, the specific steps are as follows:

[0048] (1) Pretreatment of the carbon fiber matrix: firstly remove the glue, and heat the carbon fiber matrix at 800°C under the protection of nitrogen to increase the active specific surface of the carbon fiber and avoid the broken filaments...

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Abstract

The invention discloses a carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material for the manganese electrodeposition and a preparation method. The anode comprises a carbon fiber substrate, aNi-Co3O4 bottom layer covering the carbon fiber substrate, a Sn-Co-RuOx middle layer covering the bottom layer, and an amorphous Pb-Mn-RuOx active layer covering the Sn-Co-RuOx middle layer. Accordingto the prepared carbon-fiber-based amorphous Pb-Mn-RuOx gradient anode material, compared with a traditional lead-based multi-element alloy, manganese electrode-position of an anion diaphragm in a chloride manganese system is achieved, on the basis of not changing the structure of a electrolytic cell, the composition of electrolyte and the operating specification, the service life of the anode isprolonged significantly, the conductivity of the anode is significantly improved, the cell voltage can be reduced by more than 20%, the current efficiency is increased by 4-8%, and the production ofthe chlorine gas can be inhibited.

Description

technical field [0001] The invention relates to the technical field of an anode material and a preparation method thereof, in particular to a preparation method of an anode material applied to an ammonium chloride system for extracting nonferrous metals. Background technique [0002] Because hydrometallurgy has the advantages of high comprehensive resource utilization rate, environmental protection process and strong adaptability to low-grade ore, the share of Cu, Zn, Ni, Mn and other non-ferrous metals extracted by wet method is gradually increasing. In the electrolysis process of non-ferrous metals, about 90% of zinc, about 30% of copper and 100% of manganese are extracted by hydrometallurgical technology. Taking wet electrolytic manganese as an example, the current efficiency of electrolytic manganese metal is low, generally only reaching about 75%, and the electric energy consumption of each ton of electrolytic manganese product is nearly 6200kW·h, which is a famous "ele...

Claims

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Application Information

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IPC IPC(8): C25C7/02C25C1/10C23C28/02C25D3/12C23C18/08C25D15/00C25D3/56C25D5/48C25D5/50
Inventor 陈步明陈胜黄惠冷和郭忠诚
Owner KUNMING UNIV OF SCI & TECH
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