Gel battery capable of long-term storage based on accordion structure and preparation method thereof

Abstract

The present invention provides a long-term storage gel battery based on an accordion structure and its preparation method. The battery comprises a high-salinity gel electrolyte, a cation-selective gel electrolyte, a low-salinity gel electrolyte, an anion-selective gel electrolyte, a paraffin separator, and graphite electrodes. The combination of these modules reduces the complexities of gel battery preparation and enables the long-term storage of the prepared gel battery.

Description

Technical Field

[0001] The present invention relates to the field of gel batteries, in particular to a long-term storage gel battery based on an accordion structure and a preparation method thereof. Background Art

[0002] In recent years, with the development of new energy storage technologies, gel batteries have attracted widespread attention due to their improved safety, maintenance-free operation, high and low temperature resistance, low self-discharge rate, and environmental friendliness. However, the current gel battery production process is cumbersome, and storage after production remains problematic.

[0003] To address these challenges, the present invention provides a long-term storage gel battery based on an accordion structure and its preparation method. The battery comprises a high-salinity gel electrolyte, a cation-selective gel electrolyte, a low-salinity gel electrolyte, an anion-selective gel electrolyte, a paraffin separator, and graphite electrodes. The combination of these modules alleviates the complexities of gel battery preparation while enabling the long-term storage of the prepared gel battery. Summary of the Invention

[0004] The object of the present invention is to provide a method for manufacturing a gel battery that can be easily prepared and has a structure that can achieve long-term storage of the battery.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A long-term storage gel battery based on an accordion structure and a preparation method thereof are characterized in that the battery comprises a high-salinity gel electrolyte (1), a cation-selective gel electrolyte (2), a low-salinity gel electrolyte (3), an anion-selective gel electrolyte (4), a paraffin separator (5), and a graphite electrode (6); the graphite electrodes are arranged on both sides of the hydrogel electrolyte, the paraffin separator is arranged between the high-salinity gel electrolyte (1) and the cation-selective gel electrolyte (2), between the cation-selective gel electrolyte (2) and the low-salinity gel electrolyte (3), and between the low-salinity gel electrolyte (3) and the anion-selective gel electrolyte (4); the gel electrolyte and the paraffin separator are both injected into a strip of absorbent paper in a liquid state to form a shape.

[0007] The battery is prepared by the following method:

[0008] Step 1: Cut absorbent paper into strips 9.5 cm long and 2 cm wide.

[0009] Step 2: Use a coverslip to leave a 5 mm gap 2 cm from the paper strip, drip wax liquid into it, and repeat three times for one paper strip.

[0010] Step 3: Prepare a high-salinity hydrogel precursor solution, a low-salinity hydrogel precursor solution, a cation-selective hydrogel precursor solution, and an anion-selective hydrogel precursor solution respectively.

[0011] Step 4: Inject gel into four areas on the paper strip in the order of high salinity, cation selectivity, low salinity, and anion selectivity, at 50 μL per square centimeter.

[0012] Step 5: Curing with two 16W, 365mm UV lamps with mineral sealed UV display lamps, 20mm apart.

[0013] Step 6: Bend the solidified paper gel 150° along each wax mark. When folding, make sure that the folding directions of adjacent modules are opposite, forming a Z shape, and there is no contact between adjacent modules.

[0014] Furthermore, preferably, the high-salinity gel electrolyte (1) comprises calcium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

[0015] Furthermore, preferably, the cation selective gel electrolyte (2) comprises 2-acrylamide-2-methylpropane sulfonic acid (AMPS), acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

[0016] Furthermore, preferably, the low-salinity gel electrolyte (3) comprises calcium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

[0017] Furthermore, preferably, the anion selective gel electrolyte (4) comprises (3-acrylamidopropyl)trimethylammonium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

[0018] Furthermore, preferably, the paraffin partition area (5) comprises paraffin.

[0019] Furthermore, as a preference, the graphite electrode (6) comprises a graphite felt sheet with a thickness of 3 mm, on which is attached a piece of absorbent paper of the same size as the paper gel battery, a potassium hexacyanoferrate / potassium hexacyanoferrate / potassium chloride solution is added to the paper, and one side of the graphite felt with the paper sheet contacts the outermost layer of the paper gel battery pack.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a long-term storage gel battery based on an accordion structure and its preparation method. The battery comprises a high-salinity gel electrolyte, a cation-selective gel electrolyte, a low-salinity gel electrolyte, an anion-selective gel electrolyte, a paraffin separator, and graphite electrodes. The combination of these modules reduces the complexities of gel battery preparation and enables the long-term storage of the prepared gel battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a long-term storage gel battery based on an accordion structure;

[0023] Figure 2 This is a flow chart for the preparation of long-term storage gel batteries based on an accordion structure;

[0024] Among them, there are high-salinity gel electrolyte (1), cation-selective gel electrolyte (2), low-salinity gel electrolyte (3), anion-selective gel electrolyte (4), paraffin separator (5), and graphite electrode (6). DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings. However, it should be understood that the accompanying drawings are provided only to help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any form.

[0026] like Figure 1 As shown, the present invention provides a long-term storage gel battery based on an accordion structure, which includes a high-salinity gel electrolyte (1), a cation-selective gel electrolyte (2), a low-salinity gel electrolyte (3), an anion-selective gel electrolyte (4), a paraffin separator (5), and a graphite electrode (6), characterized in that the graphite electrodes are arranged on both sides of the hydrogel electrolyte, the paraffin separator is arranged between the high-salinity gel electrolyte (1) and the cation-selective gel electrolyte (2), between the cation-selective gel electrolyte (2) and the low-salinity gel electrolyte (3), and between the low-salinity gel electrolyte (3) and the anion-selective gel electrolyte (4), and the gel electrolyte and the paraffin separator are both injected into a strip of absorbent paper in a liquid state to form a shape.

[0027] like Figure 2 As shown, it contains six steps:

[0028] Step 1: Cut absorbent paper into strips 9.5 cm long and 2 cm wide.

[0029] Step 2: Use a coverslip to leave a 5 mm gap 2 cm from the paper strip, drip wax liquid into it, and repeat three times for one paper strip.

[0030] Step 3: Prepare a high-salinity hydrogel precursor solution, a low-salinity hydrogel precursor solution, a cation-selective hydrogel precursor solution, and an anion-selective hydrogel precursor solution respectively.

[0031] Step 4: Inject gel into four areas on the paper strip in the order of high salinity, cation selectivity, low salinity, and anion selectivity, at 50 μL per square centimeter.

[0032] Step 5: Curing with two 16W, 365mm UV lamps with mineral sealed UV display lamps, 20mm apart.

[0033] Step 6: Bend the cured paper gel 150° along each wax mark. When folding, make sure that adjacent modules fold in opposite directions, forming a Z-shape, with no contact between adjacent modules.

[0034] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A long-term storage gel battery based on an accordion structure and a preparation method thereof, characterized in that: The battery comprises a high-salinity gel electrolyte (1), a cation-selective gel electrolyte (2), a low-salinity gel electrolyte (3), an anion-selective gel electrolyte (4), a paraffin separator (5), and a graphite electrode (6); the graphite electrodes are arranged on both sides of the hydrogel electrolyte, the paraffin separator is arranged between the high-salinity gel electrolyte (1) and the cation-selective gel electrolyte (2), between the cation-selective gel electrolyte (2) and the low-salinity gel electrolyte (3), and between the low-salinity gel electrolyte (3) and the anion-selective gel electrolyte (4); the gel electrolyte and the paraffin separator are both injected into a strip of absorbent paper in a liquid state to form a shape; The battery is prepared by the following method: Step 1: Cut absorbent paper into strips 9.5 cm long and 2 cm wide; Step 2: Use a coverslip to leave a 5 mm gap 2 cm from the paper strip, drop wax solution into it, and repeat three times for each paper strip; Step 3: respectively preparing a high-salinity hydrogel precursor solution, a low-salinity hydrogel precursor solution, a cation-selective hydrogel precursor solution, and an anion-selective hydrogel precursor solution; Step 4: Inject gel into four areas on the paper strip in the order of high salinity, cation selectivity, low salinity, and anion selectivity, at a rate of 50 μL per square centimeter. Step 5: Two 16-watt, 365mm UV lamps with mineral-sealed UV display lamps, 20mm apart for curing; Step 6: Bend the solidified paper gel 150° along each wax mark. When folding, make sure that adjacent modules fold in opposite directions, forming a Z shape, and that there is no contact between adjacent modules. Step 7: The graphite electrode (6) comprises a graphite felt sheet with a thickness of 3 mm, on which is attached a piece of absorbent paper of the same size as the paper gel battery, and potassium hexacyanoferrate / potassium hexacyanoferrate / potassium chloride solution is added to the paper, and the side of the graphite felt with the paper sheet is in contact with the outermost layer of the paper gel battery pack.

2. The accordion-structured long-term storage gel battery and its preparation method according to claim 1, characterized in that: The high-salinity gel electrolyte (1) comprises calcium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

3. The accordion-structured long-term storage gel battery and its preparation method according to claim 1, characterized in that: The cation selective gel electrolyte (2) comprises 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

4. The accordion-structured long-term storage gel battery and its preparation method according to claim 1, characterized in that: The low-salinity gel electrolyte (3) includes calcium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

5. The accordion-structured long-term storage gel battery and its preparation method according to claim 1, characterized in that: The anion selective gel electrolyte (4) comprises (3-acrylamidopropyl)trimethylammonium chloride, acrylamide, 40% w / v 37.5:1 acrylamide / N,N'-methylenebis(2-acrylamide) solution and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone.

6. The accordion-structured long-term storage gel battery and its preparation method according to claim 1, characterized in that: The paraffin partition (5) includes paraffin.

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