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Tin antimony oxide anode material coating and preparation method thereof, titanium-based tin antimony oxide electrode for flow battery

A technology of anode materials and oxides, applied in battery electrodes, fuel cells, regenerative fuel cells, etc., can solve the problem of poor uniformity of tin antimony oxide coating, unstable performance of tin antimony oxide, failure to meet environmental protection requirements, etc. problems, achieve process stability, shorten the heat treatment cycle, and solve the effect of easy cracking

Active Publication Date: 2021-02-12
HAOFA ENVIRONMENTAL PROTECTION TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, a large number of reagents such as nitric acid and hydrochloric acid are used in the electrodeposition method, thermal decomposition method, and hot dip method, which cannot meet environmental protection requirements and are not conducive to industrial production, and the prepared tin antimony oxide coating has poor performance uniformity; while the traditional method In the sol-gel method, the hydrolysis and polymerization of metal alkoxides are mainly used to prepare metal oxide or metal hydroxide sols, and then the sols are concentrated into transparent gels with solvents, catalysts, and compounding agents. The layer is uniform, but the production cost is high, and the heat treatment process is not yet mature, and the performance of the final tin antimony oxide is unstable and the repeatability is poor

Method used

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  • Tin antimony oxide anode material coating and preparation method thereof, titanium-based tin antimony oxide electrode for flow battery
  • Tin antimony oxide anode material coating and preparation method thereof, titanium-based tin antimony oxide electrode for flow battery
  • Tin antimony oxide anode material coating and preparation method thereof, titanium-based tin antimony oxide electrode for flow battery

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Embodiment 1

[0034] A titanium-based tin-antimony oxide electrode for a liquid flow battery of the present invention comprises a titanium substrate and a tin-antimony oxide anode material coating on the surface of the titanium substrate.

[0035] The preparation method of the titanium-based yttrium barium copper oxide ceramic electrode of the present embodiment comprises the following steps:

[0036] (1) Choose a titanium plate as the titanium substrate, polish and polish it with 40, 500 and 1200 mesh sandpaper respectively, and then wash it with acetone and deionized water in turn; then put it into a 40% NaOH aqueous solution and soak it at 80°C for 2 hours , and then moved into a 15% oxalic acid solution boiling at 96°C for 2 hours. Finally, they were ultrasonically cleaned in acetone and deionized water for 8 minutes, and dried for later use.

[0037] (2) Preparation of tin antimony sol

[0038] (2.1) tin acetate is dissolved in absolute methanol, then diethylenetriamine is added, tin a...

Embodiment 2

[0049] A titanium-based tin-antimony oxide electrode for a liquid flow battery of the present invention comprises a titanium substrate and a tin-antimony oxide anode material coating on the surface of the titanium substrate.

[0050] The preparation method of the titanium-based yttrium barium copper oxide ceramic electrode of the present embodiment comprises the following steps:

[0051] (1) Choose a titanium plate as the titanium substrate, polish and polish it with 40, 500 and 1200 mesh sandpaper respectively, and then wash it with acetone and deionized water in turn; then put it into a 40% NaOH aqueous solution and soak it at 80°C for 2 hours , and then moved into a 15% oxalic acid solution boiling at 98°C for 2 hours. Finally, they were ultrasonically cleaned in acetone and deionized water for 8 minutes, and dried for later use.

[0052] (2) Preparation of tin antimony sol

[0053] (2.1) tin acetate is dissolved in anhydrous methanol, then diethylenetriamine is added, ti...

Embodiment 3

[0062] A titanium-based tin-antimony oxide electrode for a liquid flow battery of the present invention comprises a titanium substrate and a tin-antimony oxide anode material coating on the surface of the titanium substrate.

[0063] The preparation method of the titanium-based yttrium barium copper oxide ceramic electrode of the present embodiment comprises the following steps:

[0064] (1) Choose a titanium plate as the titanium substrate, polish and polish it with 40, 500 and 1200 mesh sandpaper respectively, and then wash it with acetone and deionized water in turn; then put it into a 40% NaOH aqueous solution and soak it at 80°C for 2 hours , and then moved into a 15% oxalic acid solution boiling at 98°C for 2 hours. Finally, they were ultrasonically cleaned in acetone and deionized water for 8 minutes, and dried for later use.

[0065] (2) Preparation of tin antimony sol

[0066] (2.1) tin acetate is dissolved in anhydrous methanol, then diethylenetriamine is added, ti...

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Abstract

The invention discloses a tin-antimony oxide anode material coating and a preparation method thereof, and a titanium-based tin-antimony oxide electrode of a liquid flow battery. The preparation method includes: (1) using the mixed sol containing tin salt and antimony salt as the precursor sol, forming a gel wet film on the surface of the substrate by dipping and pulling; (2) drying the gel wet film to obtain a gel dry film (3) Carrying out crystallization pretreatment to the gel dry film, until the gel dry film is converted into a tin antimony oxide film; (4) Carrying out crystallization heat treatment to the formed tin antimony oxide film to obtain tin with conductive function Antimony oxide anode material coating. The titanium-based tin-antimony oxide electrode of the liquid flow battery comprises a titanium substrate and the above-mentioned tin-antimony oxide anode material coating on the surface thereof. The method can be used for forming a large-area tin-antimony oxide film, and the obtained tin-antimony oxide film has uniform properties, high electrical conductivity and good electrochemical corrosion resistance. The preparation process is easy to control, the process is stable and repeatable, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of new energy and new materials, and relates to the preparation technology of a lead methanesulfonate liquid flow battery anode material, in particular to a tin antimony oxide anode material coating and a preparation method thereof, and a titanium-based liquid flow battery. Tin antimony oxide electrodes. Background technique [0002] Lead methanesulfonate flow battery is a new type of redox flow battery. With soluble lead(II) methanesulfonate as the matrix solution, the soluble Pb(II) is reduced to form metallic lead on the surface of the negative electrode during charging, and oxidized to form solid PbO on the surface of the positive electrode. 2 , to form a potential difference, because a single electrolyte is used, no diaphragm is needed, and only a certain distance between the positive and negative electrodes is required. In this way, the structure of the battery is simpler, and the batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/18
CPCH01M4/8657H01M4/8878H01M4/8882H01M8/188Y02E60/50
Inventor 刘政李远发赵健罗小飞
Owner HAOFA ENVIRONMENTAL PROTECTION TECH SHENZHEN CO LTD
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