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Bromine electrode for bromine hydride energy storage battery and preparation method of bromine electrode
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A technology of energy storage batteries and electrodes, which is applied in battery electrodes, fuel cells, regenerative fuel cells, etc., to achieve mass production, wide sources, and improved performance
Inactive Publication Date: 2016-06-22
XINGTAI POLYTECHNIC COLLEGE
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[0009] The purpose of the present invention is to provide a bromine electrode for hydrogen-bromine energy storage battery with low cost and simple preparation process in view of the low electrochemical activity of the bromine electrode of the existing hydrogen-bromine energy storage battery, so as to improve the performance of the hydrogen-bromine energy storage battery
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Embodiment 1
[0032] Cut the graphite felt into small pieces of 2cm×2cm, put it into deionized water for ultrasonic cleaning for 30min, pour off the cleaned water, add deionized water and continue cleaning for 30min, repeat 3 times. Then use absolute ethanol to ultrasonically clean for 30 minutes, take it out and dry it in a blast drying oven at 120°C for 2 hours before use.
[0033] Take 8mg of carbon black, 64mg of 5wt.% Nafion solution and 3ml of absolute ethanol, and ultrasonically disperse for 30min to prepare ink-like slurry. will be 4cm 2 Immerse the graphite felt in the ink-like slurry for 1 min, take it out and dry it with hot air, continue to immerse in the ink-like slurry, repeat several times until the slurry is completely used up, and then put it in a blast drying oven at 120°C for 5 hours to obtain GF. / Carbonblack bromine electrode.
Embodiment 2
[0042] Cut the carbon felt into small pieces of 2cm×2cm, put it in deionized water for ultrasonic cleaning for 30 minutes, pour off the cleaned water, add deionized water and continue cleaning for 30 minutes, repeat 3 times. Then use absolute ethanol to ultrasonically clean for 30 minutes, take it out and dry it in a blast drying oven at 120°C for 2 hours before use.
[0043] Take 8mg of carbon black, 64mg of 5wt.% Nafion solution and 3ml of absolute ethanol, and ultrasonically disperse for 30min to prepare ink-like slurry. will be 4cm 2 Immerse the carbon felt in the ink-like slurry and ultrasonically for 1min, take it out and dry it with hot air, continue to immerse in the ink-like slurry, repeat several times until the slurry is completely used up, and then put it in a blast drying oven at 120°C for 5 hours to obtain CF. / Carbonblack bromine electrode.
[0044] The preparation of the hydrogen electrode, the assembly of the single cell, and the test are the same as in Exam...
Embodiment 3
[0046] Cut the graphite felt into small pieces of 2cm×2cm, put it into deionized water for ultrasonic cleaning for 30min, pour off the cleaned water, add deionized water and continue cleaning for 30min, repeat 3 times. Then use absolute ethanol to ultrasonically clean for 30 minutes, take it out and dry it in a blast drying oven at 120°C for 2 hours before use.
[0047] Take 8mg of ordered mesoporous carbon material, 64mg of 5wt.% Nafion solution and 3ml of absolute ethanol, and ultrasonically disperse for 30min to prepare an ink-like slurry. will be 4cm 2 Immerse the graphite felt in the ink-like slurry for 1 min, take it out and dry it with hot air, continue to immerse in the ink-like slurry, repeat several times until the slurry is completely used up, and then put it in a blast drying oven at 120°C for 5 hours to obtain GF. / CNTs bromine electrode.
[0048] The preparation of the hydrogen electrode, the assembly of the single cell, and the test are the same as in Example ...
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Abstract
The invention discloses a bromineelectrode for a brominehydrideenergy storage battery and a preparation method of the bromineelectrode. The bromine electrode comprises a porous carbon material and a catalytic layer, wherein the catalytic layer is attached onto the surface of the porous carbon material, the porous carbon material is graphite felt, a carbon felt, activated carbonfiber felt of carbon cloth, the catalytic layer comprises a catalyst carbon black, ordered mesoporous carbon, doping ordered mesoporous carbon and a binding agent Nafion or PVA. The preparation process comprises the following steps of (1) placing the porous carbon material in deionized water and absolute ethyl alcohol for ultrasonic washing for 20-40 minutes, and drying the porous carbon material at 80-120 DEG C for use; (20 dispersing the catalyst and the binding agent in the solution to form uniform ink-shaped slurry; and (3) immersing the porous carbon material in the ink-shaped slurry, taking out the porous carbon material, and drying the porous carbon material to obtain the bromine electrode. The bromine electrode disclosed by the invention has the advantages of large specific area and high catalytic activity, and thus, the battery performance is effectively improved; and the carbon material with cheap cost is taken as the catalyst, and the bromine electrode is low in cost and simple in preparation process and is easy for mass production.
Description
technical field [0001] The invention relates to the field of energy storage batteries, in particular to a bromine electrode for a hydrogen-bromine energy storage battery and a preparation method thereof. Background technique [0002] With the development of the economy and the improvement of people's living standards, the demand for electric energy in the whole society is increasing. The storage of electrical energy is of great significance in power system peak regulation, military applications, and renewable energy storage. Therefore, it is particularly important to develop a low-cost, environmentally friendly, and commercially available high-power and high-efficiency energy storage technology. Hydrogen-bromine energy storage battery is a secondary energysystem that uses the oxidation-reduction reaction of hydrogen and bromine to store and convert energy. It is an efficient energy storage technology. When working, the bromine electrode electrolyte is transported into the...
Claims
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Application Information
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