阅读说明：本技术 汗液激发的分段式电池、制备方法及用途 (Sectional type battery excited by sweat, preparation method and application ) 是由 鲁志松 肖刚 乔琰 于 2021-06-03 设计创作，主要内容包括：本发明涉及功能纺织品加工技术领域,特别涉及一种汗液激发的分段式电池、制备方法及用途,该电池包括亲水性线材、该亲水性线材上设有至少一个电池单元,所述电池单元包括依次设置于该亲水性线材上的正极段、电解质盐桥段及金属负极段。与现有技术相比,本发明以柔性纤维为电池的支撑基底,灵活构建分段式汗液激活的电池,制备方法简便,价格便宜,能清洗并重复利用,通过纤维编织的方式实现电池的串并联阵列,可制备输出性能更高的柔性可穿戴能源织物,柔性纤维/织物能承受多种复杂的机械变形,具有良好的空气渗透性和保暖性,纺织原料类型多样,图案设计灵活本发明成本低廉,方便快捷、方法简单,利于大规模生产,在柔性可穿戴自供能方面具有很大的潜在应用。(The invention relates to the technical field of functional textile processing, in particular to a sweat-excited sectional type battery, a preparation method and application. Compared with the prior art, the sectional type sweat activated battery is flexibly constructed by taking the flexible fibers as the supporting substrate of the battery, the preparation method is simple and convenient, the price is low, the battery can be cleaned and recycled, the series-parallel connection array of the battery is realized in a fiber weaving mode, the flexible wearable energy fabric with higher output performance can be prepared, the flexible fibers/fabric can bear various complex mechanical deformations, the flexible wearable energy fabric has good air permeability and heat retention, the types of textile raw materials are various, the pattern design is flexible, the cost is low, the method is convenient and fast, the method is simple, the large-scale production is facilitated, and the flexible wearable energy activated battery has great potential application in the aspect of flexible wearable self-energy supply.)

1. A sweat activated segmented battery characterized by: the battery unit comprises a hydrophilic wire and at least one battery unit arranged on the hydrophilic wire, wherein the battery unit comprises a positive pole section, an electrolyte salt bridge section and a metal negative pole section which are sequentially arranged on the hydrophilic wire.

2. The sweat-activated segmented battery of claim 1 wherein: the hydrophilic wire is natural fiber, artificial fiber or synthetic fiber.

3. A sweat activated segmented battery as claimed in claim 1 or 2 wherein: the positive electrode section is formed by attaching a conductive material to the hydrophilic wire.

4. The sweat-activated segmented battery of claim 3 wherein: the conductive material is one or more of carbon nano material, conductive polymer and metal nano material.

5. The sweat-activated segmented battery of claim 1 wherein: the metal negative pole section is formed by wrapping a metal foil on the hydrophilic wire.

6. A method of manufacturing a sweat activated segmented battery as claimed in claims 1-5 comprising the steps of:

s1, preparing a conductive liquid: uniformly dispersing a conductive material in deionized water to form a conductive liquid;

s2, preparing a hydrophobic partition area: dropping hydrophobic material on the hydrophilic wire at intervals, wherein the hydrophobic material forms a hydrophobic blocking point on the wire, and the hydrophilic wire is divided into a positive hydrophilic area and a negative hydrophilic area;

s3, preparing a positive electrode: dropwise adding a conductive liquid into the positive hydrophilic region, drying, and drying at room temperature to obtain a positive section;

s4, preparing a negative electrode: wrapping a metal foil on the negative hydrophilic area of the hydrophilic wire to prepare a metal negative section;

s5, preparing an electrolyte salt bridge: and removing the hydrophobic material on the hydrophilic wire, and forming an electrolyte salt bridge between the metal negative pole section and the metal positive pole section.

7. The method of making a sweat activated segmented battery as claimed in claim 6, where the length of the electrolyte salt bridge in S5 is 0.1-10 cm.

8. The method of manufacturing a sweat activated segmented battery as claimed in claim 6, wherein: the hydrophobic material is one or more of paraffin, polyvinylidene fluoride, chlorinated paraffin and stearic acid.

9. Use of a sweat activated segmented battery characterized by: the sweat activated segmented battery of claims 1-5 woven as warp or weft into a sweat activated electricity generating fabric.

Technical Field

The invention relates to the technical field of functional textile processing, in particular to a sweat-excited sectional type battery, a preparation method and application.

Background

Textiles are considered a second type of human skin. With the advent of the information age, textiles should combine functions, intelligence, and informatization to promote rapid development and wide application of next-generation wearable electronic products and artificial intelligence oriented systems. Wherein the energy source can be seen as flowing blood, keeping each component in the wearable system functioning properly.

Currently, the main research on the power supply of human-computer interaction devices focuses on metal-ion batteries or alkaline chemicals, which create safety hazards when used in wearable systems, and require special packaging to prevent electrolyte leakage. Recently, the collection of energy from waste generated by human activities has become a topic of academic and industrial interest, and wearable generators based on sweat have great potential to be used as alternative power sources for batteries. Sweat, urine, tissue fluid, saliva, etc. contain ions (e.g., Na)⁺，K⁺And Cl^-) Is absorbed/diffused to the surface of the working electrode, thereby participating in the electrochemical reaction. This is in sharp contrast to the corrosive and flammable aqueous (acidic or basic) or organic electrolytes that are widely used today.

The ideal flexible sweat activated cell needs to maintain electrochemical and mechanical properties during bending or folding. To date, a variety of materials have been used as substrates for sweat-activated batteries, such as epoxies, paper, and the like. To our knowledge, sweat activated battery devices that have been reported to date are primarily disposable or paper-based with poor tensile strength, presenting problems of resource waste, difficulty in recycling devices, etc.

Disclosure of Invention

In view of the above-mentioned deficiencies in the background art, the present invention provides a sweat-activated segmented battery and method.

The technical scheme adopted by the invention is as follows: a sweat activated segmented battery, the key to which is: the battery unit comprises a hydrophilic wire and at least one battery unit arranged on the hydrophilic wire, wherein the battery unit comprises a positive pole section, an electrolyte salt bridge section and a metal negative pole section which are sequentially arranged on the hydrophilic wire.

Preferably, the hydrophilic thread is natural fiber, artificial fiber, synthetic fiber.

Preferably, the positive electrode segment is formed by attaching a conductive material to the hydrophilic wire.

Preferably, the conductive material is one or more of a carbon nanomaterial, a conductive polymer and a metal nanomaterial.

Preferably, the metal negative electrode section is formed by wrapping an active metal foil on the hydrophilic wire.

The preparation method of the sweat-excited segmented battery is characterized by comprising the following steps:

s1, preparing a conductive liquid: uniformly dispersing a conductive material in deionized water to form a conductive liquid;

s2, preparing a hydrophobic partition area: dropping hydrophobic material on the hydrophilic wire at intervals, wherein the hydrophobic material forms a hydrophobic blocking point on the wire, and the hydrophilic wire is divided into a positive hydrophilic area and a negative hydrophilic area;

s3, preparing a positive electrode: dripping conductive liquid into the hydrophilic region of the positive electrode, drying, dripping a fixing agent, and drying at room temperature to obtain a positive electrode section;

s4, preparing a negative electrode: wrapping a metal foil on the negative hydrophilic area of the hydrophilic wire to prepare a metal negative section;

s5, preparing an electrolyte salt bridge: and cleaning the hydrophilic wire, removing the hydrophobic material, and forming an electrolyte salt bridge between the metal negative pole section and the positive pole section or carrying out hydrophilic modification on a hydrophobic partition area of the hydrophilic wire to form the electrolyte salt bridge between the metal negative pole section and the positive pole section.

Preferably, the length of the electrolyte salt bridge in S5 is 0.1 to 10 cm.

Preferably, the hydrophobic material is one or more of paraffin, polyvinylidene fluoride, chlorinated paraffin and stearic acid.

The application of the sweat-activated segmented battery is characterized in that: the sweat activated segmented cell is woven as warp or weft into a sweat activated electricity generating fabric.

Has the advantages that: compared with the prior art, the sectional type battery excited by sweat provided by the invention uses flexible fibers as a supporting substrate of the battery, the sectional type battery activated by sweat is flexibly constructed, the preparation method is simple and convenient, the price is low, the sectional type battery can be cleaned and recycled, the serial-parallel connection array of the battery is realized in a fiber weaving mode, the flexible wearable energy fabric with higher output performance can be prepared, the flexible fibers/fabric can bear various complex mechanical deformations, the sectional type battery excited by sweat has good air permeability and heat retention, the types of textile raw materials are various, the pattern design is flexible, the sectional type battery excited by sweat is low in cost, convenient and rapid, the method is simple, the sectional type battery excited by sweat is beneficial to large-scale production, and the sectional type battery activated by sweat has great potential application in the aspect of flexible wearable self-powered energy supply.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of example 2;

FIG. 3 is a schematic structural view of embodiment 3;

FIG. 4 is a graph of the output power of the low-concentration salt solution in example 1;

FIG. 5 is a power supply performance test chart after a plurality of times of washing in example 1;

FIG. 6 is a power supply time length test chart of embodiment 2;

FIG. 7 is a graph showing the power supply performance test in different bending states of example 2;

fig. 8 is a schematic structural view of the electrically-generatable fabric of the invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1 preparation of Single segment sweat activated segmented cells on Single fiber

Dropping molten paraffin on the cotton thread at intervals, quickly solidifying the paraffin into a paraffin blocking point, and dividing the cotton thread 1 into a positive hydrophilic area and a negative hydrophilic area by the paraffin blocking point; dripping carbon ink into the positive hydrophilic area, and drying at room temperature to obtain a carbon positive section 2; wrapping the zinc foil on the cotton thread 1 of the negative hydrophilic area to prepare a zinc negative electrode section 4; after the cotton thread 1 is soaked by petroleum ether, the cotton thread is washed by water for a plurality of times until paraffin is completely removed, an electrolyte salt bridge 3 with the length of 0.1cm is formed between the zinc cathode section 4 and the carbon cathode section 2, after the cotton thread is dried, the carbon cathode section 2 and the zinc cathode section 4 are connected with energy dissipation devices by thin copper wires, and the thin copper wires are buried in the cotton thread 1.

Example 2 preparation of two-stage sweat activated segmented cell on Single fiber

Dripping PVDF (polyvinylidene fluoride) on the silk thread 1 at intervals, solidifying the PVDF into a hydrophobic blocking point, dividing the silk thread 1 into two battery units by the hydrophobic blocking point, and forming a positive hydrophilic area and a negative hydrophilic area in each battery unit; dripping a mixed aqueous solution of PEDOT (poly 3, 4-ethylenedioxythiophene) and PSS (polystyrene sulfonate) into the positive hydrophilic area, and drying at room temperature to obtain a positive section 2; wrapping the aluminum foil on the silk thread 1 of the negative hydrophilic area to prepare an aluminum negative pole section 4; soaking the silk thread 1 in a mixed organic solvent of acetone and DMF (N, N-dimethylformamide), and washing with water for multiple times until PVDF is completely removed, so that an electrolyte salt bridge 3 with the length of 10cm is formed between the aluminum cathode section 4 and the anode section 2; after drying, PVDF is dripped onto the silk thread 1 between the two battery units at intervals to form an electrolyte partition section 5, carbon fibers penetrate through the electrolyte partition section 5, two ends of each carbon fiber are respectively connected with the positive pole section 2 or the aluminum negative pole section 4 of the battery unit close to the carbon fiber, the other positive pole section 2 and the other aluminum negative pole section 4 are connected with energy dissipation devices through the carbon fibers, and the carbon fibers are buried in the silk thread 1.

Example 3 preparation of three-stage sweat activated segmented cells on Single fiber

Dropping paraffin wax on the modified chemical fiber 1 at intervals, quickly solidifying the paraffin wax into a hydrophobic blocking point, dividing the modified chemical fiber 1 into three battery units by the hydrophobic blocking point, and forming a positive hydrophilic area and a negative hydrophilic area in each battery unit; in-situ synthesizing gold nanoparticles in the positive hydrophilic region, and drying at room temperature to obtain a positive section 2; wrapping the magnesium foil on the modified chemical fiber 1 of the negative hydrophilic region to prepare a magnesium negative section 4; after the modified chemical fiber 1 is soaked in petroleum ether, the modified chemical fiber is washed for multiple times by water until paraffin in the positive hydrophilic area and the negative hydrophilic area is completely removed, an electrolyte salt bridge 3 with the length of 1cm is formed between the magnesium negative section 4 and the positive section 2, and after the modified chemical fiber is dried, the molten paraffin is dripped onto the cotton thread 1 between the two battery units at intervals to form an electrolyte partition section 5.

The power supply performance test is carried out on the invention:

(1) as can be seen in FIG. 4, after dropping 100. mu.L of 80mM sodium chloride solution at the negative electrode of the cell, the cell developed a stable open circuit voltage of 1V and the cell start-up time was 7.5 s;

(2) as can be seen in fig. 5, after the cell is washed for 20 times, the cell still has stable open-circuit voltage;

(3) as can be seen in FIG. 6, after dropping 200. mu.L of 80mM sodium chloride solution at the negative electrode of the cell, the cell can supply power to the timer for more than 1 h;

(4) as can be seen in fig. 7, the bending and stretching have less effect on the battery during discharge.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.