WO2020181673A1 - 一种柔性的无隔膜的线型燃料电池的制备方法 - Google Patents
一种柔性的无隔膜的线型燃料电池的制备方法 Download PDFInfo
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- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
- H01M4/9025—Oxides specially used in fuel cell operating at high temperature, e.g. SOFC
- H01M4/9033—Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites
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- H01M2004/8689—Positive electrodes
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- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/30—Fuel cells in portable systems, e.g. mobile phone, laptop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the invention belongs to the technical field of linear fuel cells, and specifically relates to a method for preparing a flexible linear fuel cell without a diaphragm.
- linear energy storage system is an ideal energy storage system for wearable electronic products because the fibers and/or yarns are lightweight, flexible and woven. Therefore, great efforts have been made in the research of linear energy storage devices, including linear lithium-ion batteries, supercapacitors, and solar cells. However, due to difficulties in assembly, membranes, electrolytes, and catalysts in linear wearable fuel cells, few studies have been carried out at present.
- Fuel cell is a kind of power device with high conversion efficiency and high energy. It converts chemical energy into electrical energy through reduction and oxidation reactions on the surface of the cathode and anode. Therefore, the realization of flexible linear fuel cells is of great significance in the field of flexible wearable electronics and textiles.
- the flow fields and current collectors of traditional fuel cells are usually rigid, heavy, and inflexible, such as metal plates or graphite plates, and cannot be integrated or woven into flexible electronics or textiles.
- the membrane structure of traditional fuel cells lacks reliability and difficulty in designing linear devices. For this reason, we hope to design and manufacture a linear flexible fuel cell from the following two aspects: one is to prepare a linear flexible collector with nano-catalytic particles; the other is to explore a membrane-free single-chamber fuel cell The reaction mechanism.
- the technical problem to be solved by the present invention is to realize the linearization, miniaturization, portability and other technical problems of the fuel cell, thereby providing a flexible method for preparing a linear fuel cell without a diaphragm.
- the technical solution adopted by the present invention to solve the technical problem is to load the catalyst on the carbon nanotube yarns, and use the characteristics of hydrogen peroxide to act as a reducing agent fuel and an oxidizer, so that the cathode and anode can be in the same chamber to avoid Use a diaphragm, and at the same time use the way of covering the spacer yarn to avoid the anode and cathode short circuit.
- the method for preparing the above-mentioned flexible membrane-free linear fuel cell includes the following steps:
- step (2) Pull the carbon nanotube film from the carbon nanotube forest, stack it with different layers, and roll it into a cylindrical shape.
- the catalyst Fe 3 [Co(CN) 6 ] 2 described in step (1) Prepare a solution with a certain concentration with ethanol solution, and then evenly drop the catalyst solution onto the cylindrical carbon film, and then twist it into a uniform (CNT)@Fe 3 [Co( CN) 6 ] 2 cathode electrode yarn.
- the concentrations of the FeSO 4 ⁇ 7H 2 O and K 3 [Co(CN) 6 ] aqueous solutions are 0.2 mol/l and 0.15 mol/l, respectively.
- the mixing volume ratio is 1:1, and the magnetic stirring speed is 240 revolutions per minute.
- the vacuum low-temperature drying time is 6-10 hours, and the vacuum low-temperature drying temperature is 40°C.
- the length of the carbon nanotube film in step (2) is 15 cm, the width is 2.5 cm, and the number of layers is 10 layers.
- the concentration of the catalyst is 5 mg/ml, and the amount of the catalyst solution added dropwise is 1 ml.
- the rotation speed of the motor for twisting is 100 revolutions per minute, and the twisting time is 1 min.
- the length of the carbon nanotube film in step (3) is 15 cm, the width is 2.5 cm, and the number of layers is 10 layers.
- the concentration of the nano nickel powder is 20 mg/ml, and the dropped amount is 2 ml.
- the rotation speed of the motor for twisting is 100 revolutions per minute, and the twisting time is 1 min.
- the number of revolutions of the two synchronous motors in step (4) is 50 revolutions per minute, and the diameter of the PP monofilament is 100 microns.
- the concentration of hydrogen peroxide in step (5) is 0.03 mol/l
- the concentration of the perchloric acid solution is 0.15 mol/l
- the sodium chloride solution is 0.1 mol/l
- the mixing volume ratio of the three solutions is 1:1:1.
- the inner diameter of the silicone tube described in step (6) is 0.1 mm and the length is 10-20 cm.
- the beneficial effects of the invention are: the method is simple, the efficiency is high, and the stability is good, which is beneficial to realizing large-scale industrial production.
- the packaging of the silicone tube ensures the battery's acid and alkali resistance and safety.
- FIG. 1 SEM image of the anode electrode prepared by the present invention.
- FIG. 1 SEM image of the cathode electrode prepared by the present invention.
- Fig. 3 is a schematic diagram of a linear fuel cell prepared by the present invention.
- Fig. 4 is a device diagram of the linear fuel cell prepared by the present invention.
- FIG. 5 Performance diagram of the linear fuel cell prepared by the present invention.
- the "one embodiment” or “embodiment” referred to herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present invention.
- the appearances of "in one embodiment” in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively mutually exclusive embodiments with other embodiments.
- FeSO 4 ⁇ 7H 2 O, K 3 [Co(CN) 6 ] and NaCl the mass fraction purity is 99.99%wt
- the concentration of perchloric acid and ethanol (analytical pure AR) hydrogen peroxide is 30% wt.
- DMF stands for N-methylpyrrolidone (analytical grade AR).
- step (2) Pull the carbon nanotube film out of the carbon nanotube forest with a length of 15 cm and a width of 3 cm. After 15 layers are stacked, the film is rolled into a cylindrical shape, and the catalyst described in step (1) is mixed with ethanol solution Prepare a certain 5mg/mL solution, and then measure 1ml of the catalyst solution and apply it evenly on the cylindrical carbon film, and then twist it for 2 minutes with the help of a motor at 100 revolutions per minute to make the twist evenly The (CNT)@Fe 3 [Co(CN) 6 ] 2 cathode electrode yarn.
- step (2) Pull the carbon nanotube film out of the carbon nanotube forest with a length of 15 cm and a width of 4 cm. After 15 layers are stacked, the film is rolled into a cylindrical shape, and the catalyst described in step (1) is mixed with ethanol solution Make it into a certain 5mg/mL solution, then measure 1ml of the catalyst solution and evenly drop it on the cylindrical carbon film, and then twist it for 1.5min with the help of a motor at 100 revolutions per minute. Uniform (CNT)@Fe 3 [Co(CN) 6 ] 2 cathode electrode yarn.
- Embodiment 1 is the best embodiment.
- Figures 1 and 2 we can see that our supported catalysts are evenly coated on carbon nanotube yarns.
- Figure 3 is a schematic diagram of the fuel cell we prepared. From the figure, we can see the structure of our device, Figure 4 This is the device diagram of the linear fuel cell we actually produced.
- Figure 5 is the performance diagram of the final device. From Figure 5, we can see that our linear fuel cell can provide a stable 0.89V voltage with a power density of 6.2 mW cm -2 .
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Abstract
Description
Claims (7)
- 一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,具体步骤如下:(1)称取FeSO 4·7H 2O和K 3[Co(CN) 6]试剂分别配制成水溶液,混合后在磁力搅拌下得到悬浮液,过滤留下沉淀,用去离子水洗涤沉淀,真空低温烘干得到催化剂Fe 3[Co(CN) 6] 2;(2)将碳纳米管膜从碳纳米管森林上拉出来,叠上不同的层数后,卷成圆柱状,将步骤(1)中所述的催化剂Fe 3[Co(CN) 6] 2与乙醇溶液配成一定浓度的溶液,然后将所述的催化剂溶液均匀的滴涂到圆柱状的碳膜上,然后在电机的辅助下,加捻成均匀的(CNT)@Fe 3[Co(CN) 6] 2阴极电极纱线;(3)将所述的碳纳米管膜铺在玻璃片上,然后将纳米镍粉超声分散在DMF溶液中,然后将所得分散液均匀滴涂到纳米碳膜上,在电机的辅助下,加捻制成CNT@镍颗粒阳极电极纱线;(4)等CNT@镍颗粒阳极电极纱线自然烘干后,在两个同步电机辅助下,在CNT@镍颗粒阳极电极纱线表面包覆一层聚丙烯(PP)单丝,得到CNT@镍@PP电极;(5)称取双氧水溶液,高氯酸溶液,氯化钠盐,配制成燃料电解液;(6)将所述的(CNT)@Fe 3[Co(CN) 6] 2阴极电极纱线和CNT@镍@PP电极加捻在一起,装进硅胶管中注入电解液,从而制备成柔性的线型的双氧水燃料电池。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,步骤(1)中FeSO 4·7H 2O和K 3[Co(CN) 6]水溶液的浓度分别为0.2mol/l和0.15mol/l;所述的混合体积比1:1,所述的磁力搅拌转速为240转/分钟;所述的真空低温烘干的时间为6-10小时,所述的真空低温烘干的温度为40℃。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,步骤(2)中所述的碳纳米管膜的长度为15cm,宽度为2.5cm,层数为10层;所述的催化剂的浓度为5mg/ml,所述的滴加的催化剂溶液的量为1ml;所述的电机加捻的转速为100转/分钟,所述的加捻时间为1min。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,步骤(3)中所述的碳纳米管膜的长度为15cm,宽度为2.5cm,层数为10层;所述的分散液中,纳米镍粉的浓度为20mg/ml,所滴加的量为2ml;所述的电机加捻的转速为100转/分钟,所述的加捻时间为1min。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于, 步骤(4)中所述的两个同步电机的转数为50转/分钟,所述的PP单丝的直径为100微米。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,步骤(5)中所述的双氧水的浓度为0.03mol/l,所述的高氯酸溶液的浓度0.15mol/l,所述的氯化钠溶液为0.1mol/l,所述的3种溶液的混合体积比1:1:1。
- 如权利要求1所述的一种柔性的无隔膜的线型燃料电池的制备方法,其特征在于,步骤(6)中所述的硅胶管的内径为0.1mm,长度为10-20cm。
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GB2018073.3A GB2588308B (en) | 2019-03-11 | 2019-06-18 | Method for preparing flexible membrane-free and wire-shaped fuel cell |
US17/055,610 US11069904B1 (en) | 2019-03-11 | 2019-06-18 | Method for preparing flexible membrane-free and wire-shaped fuel cell |
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CN113960140B (zh) * | 2021-09-24 | 2023-11-21 | 合肥天一生物技术研究所有限责任公司 | 一种用于血浆中维生素b1含量检测的丝网印刷电极 |
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CN114023924B (zh) * | 2021-11-01 | 2023-07-11 | 湖南立方新能源科技有限责任公司 | 一种无集流体硅基负极的制备方法及纤维锂离子电池 |
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