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Electrode material with intermediate Ti4O7 coating

A titanium oxide and intermediate coating technology, applied in the field of electrode materials, can solve the problems of electrode performance decline and internal resistance increase, and achieve the effects of increasing current density, preventing corrosion and improving bonding state.

Inactive Publication Date: 2015-11-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes how we can improve the properties of different types of composites used in various applications such as hydrogen production or fuel cells by optimizing their composition and structures. By doing this, they will be able to make better products with less expensive components while maintaining good efficiency.

Problems solved by technology

The technical problem addressed in this patented paper relates to improving the quality control and efficiency of hydrogen production processes due to increased emissions caused by various sources such as electricity generation plants and other industries. This can result in reduced lifecycle costs associated with maintenance work and potential damage to sensitive components like sensors. To address these issues, there exists a challenge: reducing the resistive properties of existing elec trochlorothermal reactor systems while maintaining their effectiveness over longer periods of operation under harsh environments without causing corrosion or degradations.

Method used

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  • Electrode material with intermediate Ti4O7 coating
  • Electrode material with intermediate Ti4O7 coating
  • Electrode material with intermediate Ti4O7 coating

Examples

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Embodiment 1

[0023] The electrode material with titanium oxide intermediate coating described in this embodiment is coated with an intermediate layer of titanium oxide (TiO) on the outer surface of the base metal plate 1 (pure titanium plate, thickness: 4 o 7 ) 2 and a surface-active coating 3 prepared (eg figure 1 shown), the thickness of the middle layer of titanium dioxide 2 is 0.5mm, and the surface active coating 3 is a highly active and cheap metal oxide coating of 0.5mm. Its main components and mass percentages are 70% lead dioxide, manganese dioxide 28.5%, and rare earth oxides are 1.5%.

[0024] The polarization curve of the electrode material described in this example is negatively shifted compared with the traditional Ti base, the polarization potential drops by 125mV (when the current density is 0.2A), and the current density increases by 132mA (when the polarization potential is 2.2V), as figure 2 As shown in Figure 1 # - Polarization curves of cheap metal oxide coatings p...

Embodiment 2

[0026] The electrode material having a titanium oxide intermediate coating described in this embodiment is coated with an intermediate layer of titanium oxide (Ti 4 o 7 ) 2 and a surface-active coating 3 prepared (eg figure 1 shown), the thickness of the middle layer of titanium dioxide 2 is 1mm, and the surface active coating 3 is a 0.8mm high-activity cheap metal oxide coating. Its main components and mass percentages are 85% lead dioxide and 10% manganese dioxide %, rare earth oxide is 5%.

[0027] The polarization curve of the electrode material described in this example is negatively shifted compared with the traditional Ti base, the polarization potential drops by 188mV (when the current density is 0.2A), and the current density increases by 230mA (when the polarization potential is 2.2V), as figure 2 As shown in Figure 1 # - Polarization curves of cheap metal oxide coatings prepared by traditional pure titanium-based electroplating, 2 # - Polarization curves of che...

Embodiment 3

[0029]The electrode material with a titanium oxide intermediate coating described in this embodiment is coated with an intermediate layer of titanium oxide (TiO) on the outer surface of the base metal plate 1 (pure titanium plate, thickness: 4 o 7 ) 2 and a surface-active coating 3 prepared (eg figure 1 shown), the thickness of the middle layer of titanium dioxide 2 is 1.5mm, and the surface active coating 3 is a rare metal oxide coating with a thickness of 15 μm prepared by thermal decomposition method, and its main component and mass percentage are ruthenium dioxide 12 %, Tantalum Dioxide 8%, Tin Dioxide 40%, Titanium Dioxide 50%.

[0030] The polarization curve of the electrode material described in this example is negatively shifted compared with the traditional Ti base, the polarization potential drops by 70mV (when the current density is 0.05A), and the current density increases by 40mA (when the polarization potential is 1.2V), as image 3 As shown in Figure 1 # - Po...

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Abstract

The invention discloses an electrode material with an intermediate Ti4O7 coating and belongs to the technical fields of hydrometallurgy and electrochemistry metallurgy. Titanium, aluminum and a titanium alloy or an aluminum alloy are taken as the inner core structure of an electrode, the surface of the electrode is coated with Ti4O7 which has excellent chemical performance such as low electrical resistivity, high activity, good electrochemical corrosion resistance and the like, so that the electricity conduction performance of the electrode is improved and an inner core material is protected; then a high-activity low-price metal oxide coating is prepared with an electroplating method or a high-activity rare metal oxide coating is prepared with a thermal decomposition method on the surface of the electrode. Current distribution of the electrode material is uniform, the purity of an electro-deposition product is high, the polarization potential of the composite electrode of the intermediate Ti4O7 coating is reduced by 70-188 mV than that of a traditional ti-based electrode, the current density is increased by 40-230 mA, the catalytic activity of the electrode is improved, the electrode potential is reduced in the practical use process, and energy conservation and consumption reduction are realized.

Description

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Claims

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Application Information

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Owner KUNMING UNIV OF SCI & TECH
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