CN108649281B - Liquid metal flexible battery and wearable equipment thereof - Google Patents
Liquid metal flexible battery and wearable equipment thereof Download PDFInfo
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- CN108649281B CN108649281B CN201810392895.6A CN201810392895A CN108649281B CN 108649281 B CN108649281 B CN 108649281B CN 201810392895 A CN201810392895 A CN 201810392895A CN 108649281 B CN108649281 B CN 108649281B
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- liquid metal
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- air electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/38—Construction or manufacture
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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
- Y02E60/10—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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to the field of batteries, and discloses a liquid metal flexible battery which comprises: the packaging structure comprises a positive electrode lug, a negative electrode lug, a flexible air electrode, liquid metal, electrolyte solution and a packaging body, wherein the packaging body and the flexible air electrode form a packaging space, the liquid metal and the electrolyte solution are packaged in the packaging space, one end of the positive electrode lug is connected with the flexible air electrode, and one end of the negative electrode lug is in contact with the liquid metal. The liquid metal flexible battery provided by the invention has good flexibility, and the discharge of the battery cannot be influenced by bending and twisting to a certain degree; the battery has small volume, is light and flexible, and is convenient to carry; the liquid metal flexible battery is widely applied to intelligent watches, intelligent navigation shoes, music T-shirts and the like.
Description
Technical Field
The invention relates to the field of batteries, in particular to a liquid metal flexible battery and wearable equipment thereof.
Background
Flexible electronics can be summarized as a new electronic technology for manufacturing organic/inorganic material electronic devices on flexible/ductile plastic or thin metal substrates, and has wide application prospects in the fields of information, energy, medical treatment, national defense and the like, such as flexible electronic displays, organic light emitting diodes, printing, thin-film solar panels, surface pasting for electronics and the like, due to unique flexibility/ductility, high efficiency and low cost manufacturing processes.
Flexible electronic technology has likely brought about a revolution in electronic technology, has attracted widespread attention and has rapidly developed around the world. The American journal of science and electronic technology lists the progress of organic electronic technology as one of ten scientific and technological achievements in the world in 2000, and parallels with important findings of human genome draft, biological cloning technology and the like. American scientists allen black, allen macdermide and japanese scientist white english trees have won the nobel chemical prize in 2000 due to their pioneering work in the field of conductive polymers.
Major research plans aiming at flexible electronics are made in developed countries in the western world, such as the FDCASU plan in the United states, the TRADIM plan in Japan, the Poly Apply and SHIFT plan in the seventh framework plan of the European Union, and the development expenditure of billions of Euro is invested in only the seventh framework plan of the European Union, so that basic research on the aspects of flexible displays, material/design/manufacture/reliability of polymer electronics, batch manufacturing of flexible electronic devices and the like is supported.
However, there is a common problem with existing flexible batteries for use in wearable devices: the battery has short endurance time. The battery of most wearable smart machine, normal live time is about 24h, and some more functions's equipment, power consumption can be bigger to the user must charge twice daily just can normally use, and can not buckle.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a liquid metal flexible battery and wearable equipment thereof, and solves the problems of low battery endurance and inflexibility in the prior art.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a liquid metal flexible battery, comprising: anodal utmost point ear, negative pole utmost point ear, flexible air electrode, liquid metal, electrolyte solution and packaging body constitute the encapsulation space, will liquid metal and electrolyte solution encapsulate inside the encapsulation space, anodal utmost point ear one end with flexible air electrode connects, the one end of negative pole utmost point ear with the contact of liquid metal.
The packaging structure comprises a packaging body and a flexible air electrode, and is characterized by further comprising a buckling part, wherein the buckling part is arranged at two ends of the packaging body and the flexible air electrode and used for buckling and fixing the packaging body and the flexible air electrode together.
The liquid metal is one of gallium-based liquid metal alloy, indium-based liquid metal alloy and tin-based liquid metal alloy.
The current collector also comprises a wire, wherein the wire is connected with the anode tab and the cathode tab and used for leading out current.
Wherein, the wire is a copper wire.
Wherein, the flexible air electrode comprises a waterproof layer at the inner side and a breathable layer at the outer side.
The electrolyte solution is an alkaline solution, and the packaging body is made of alkali-resistant plastic.
Wherein the packaging body is a polyethylene terephthalate film.
The lithium battery further comprises a nickel screen, the nickel screen is packaged in the packaging space and is in contact with the liquid metal and the electrolyte solution, and the negative electrode tab is connected with the liquid metal through the nickel screen.
The invention also discloses a wearable device, comprising: the liquid metal flexible battery of the invention.
(III) advantageous effects
According to the liquid metal flexible battery and the wearable device thereof, the metal electrode of the traditional battery can be replaced by utilizing the metal fluidity of the liquid metal, the liquid metal has high conductivity and good flexibility, and the discharge of the battery cannot be influenced by bending and twisting to a certain degree; the battery has small volume, is light and flexible, and is convenient to carry; the battery has sufficient continuous electricity, durable discharge, environmental protection, no pollution and wide application.
Drawings
Fig. 1 is an exploded view of a liquid metal flexible battery of the present invention;
fig. 2 is a longitudinal sectional view of a liquid metal flexible battery of the present invention;
fig. 3 is a perspective view of a liquid metal flexible battery according to the present invention.
In the figure, 1, a lead; 2. a positive electrode tab; 3. a package body; 4. a nickel wire mesh; 5. a buckle component; 6. a flexible air electrode; 7. an electrolyte solution; 8. a liquid metal; 9. and a negative pole tab.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present invention discloses a liquid metal flexible battery, which is characterized by comprising: anodal utmost point ear 2, negative pole utmost point ear 9, flexible air electrode 6, liquid metal 8, electrolyte solution 7 and packaging body 3, packaging body 3 and flexible air electrode 6 constitute the encapsulation space, encapsulate liquid metal 8 and electrolyte solution 7 inside the encapsulation space, and anodal utmost point ear 2's one end is connected with flexible air electrode 6, and the one end and the contact of liquid metal 8 of negative pole utmost point ear 9.
Specifically, during the discharge of the battery, part of metal atoms in the liquid metal 8 undergo oxidation reaction to lose electrons, enter the electrolyte solution 7 in the form of metal ions, and react: m-ne-＝Mn+(ii) a Oxygen in the air is absorbed by the flexible air electrode 6 and enters the electrolyte solution 7, and the oxygen obtains electrons to perform reduction reaction: o is2+2H2O+4e-＝4OH-Thereby forming a current. Currently, the flexible air electrode 6 may employ: 1. an electrode composed of a carbon cloth or a carbon fiber woven net; 2. carbon nanotube paper, graphite paper electrode, etc. composed of carbon nanotubes (such as carbon nanotubes and graphene); 3. metal substrate such as stainless steel mesh, nickel mesh.
The positive electrode tab 2 and the negative electrode tab 9 in this embodiment are both copper tabs.
The liquid metal can be regarded as a mixture consisting of the positive ion fluid and the free electron gas, the metal electrode of the traditional battery can be replaced by utilizing the metal fluidity of the liquid metal, and the liquid metal has the characteristics of high conductivity and high flexibility and endurance of the battery. The liquid metal flexible battery provided by the invention has good flexibility, and the discharge of the battery cannot be influenced by bending and twisting to a certain degree; the battery has small volume, is light and flexible, and is convenient to carry; the battery has sufficient continuous electricity, durable discharge, environmental protection and no pollution.
The packaging structure further comprises a buckling component 5, wherein the buckling component 5 is arranged at two ends of the packaging body 3 and the flexible air electrode 6 and used for buckling and fixing the packaging body 3 and the flexible air electrode 6 together. Specifically, the clip member 5 may be a flexible rubber clip, which has a function of fixing the package and has a certain flexibility.
Wherein the liquid metal 8 is one of a gallium-based liquid metal alloy, an indium-based liquid metal alloy, and a tin-based liquid metal alloy.
The current collector further comprises a lead 1, wherein the lead 1 is connected with the positive pole lug 2 and the negative pole lug 9 and used for leading out current. Preferably, the wire 1 is a copper wire.
Wherein the flexible air electrode 6 comprises a waterproof layer on the inside and a breathable layer on the outside. Specifically, the waterproof layer is located on the inner side and is in contact with the electrolyte solution 7; the air-permeable layer is arranged on the outer side and is used for absorbing oxygen in the air and conveying the oxygen to the interior of the battery to participate in the reaction of the battery.
Wherein, the electrolyte solution 7 is an alkaline solution, and the packaging body 3 is made of alkali-resistant plastic. Specifically, a KOH (potassium hydroxide) solution or a NaOH (sodium hydroxide) solution can be used as the electrolyte solution, and the concentration of the electrolyte solution is 2mol/L to 6 mol/L. Preferably, the alkali-resistant plastic used for the package body 3 may be made of polyethylene terephthalate film.
Wherein, the nickel screen 4 is packaged in the packaging space and is contacted with the liquid metal 8 and the electrolyte solution 7, and the cathode tab 9 is connected with the liquid metal 8 through the nickel screen 4. The nickel wire mesh 4 is used as a catalyst for electrode reaction, part of metal atoms in the liquid metal alloy lose electrons on the nickel wire mesh 4 to form metal ions, and the metal ions enter an electrolyte solution 7 to react: m-ne-＝Mn+. In the embodiment, the positive electrode tab 2 is connected with the flexible air electrode 6 and is used as the positive electrode of the battery; the negative pole tab 9 is connected with the nickel screen 4 and is used as a batteryAnd a negative electrode.
The liquid metal flexible battery provided by the invention has good flexibility, and the discharge of the battery cannot be influenced by bending and twisting to a certain degree; the battery has small volume, is light and flexible, and is convenient to carry; the battery has sufficient continuous electricity, durable discharge, environmental protection, no pollution and wide application.
The invention also discloses a wearable device, comprising: the liquid metal flexible battery of the invention. The liquid metal flexible battery can be applied to various wearable devices, such as intelligent watches, intelligent navigation shoes, music T-shirts and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A liquid metal flexible battery, comprising: the flexible air electrode packaging structure comprises a positive electrode tab (2), a negative electrode tab (9), a flexible air electrode (6), liquid metal (8), electrolyte solution (7) and a packaging body (3), wherein the packaging body (3) and the flexible air electrode (6) form a packaging space, the liquid metal (8) and the electrolyte solution (7) are packaged in the packaging space, one end of the positive electrode tab (2) is connected with the flexible air electrode (6), and one end of the negative electrode tab (9) is in contact with the liquid metal (8);
the packaging structure is characterized by further comprising a buckling part (5), wherein the buckling part (5) is arranged at two ends of the packaging body (3) and the flexible air electrode (6) and used for buckling and fixing the packaging body (3) and the flexible air electrode (6) together;
the electrolyte solution (7) is an alkaline solution, and the packaging body (3) is made of alkali-resistant plastic.
2. A liquid metal flexible battery according to claim 1, characterized in that the liquid metal (8) is one of a gallium-based liquid metal alloy, an indium-based liquid metal alloy, a tin-based liquid metal alloy.
3. The flexible liquid metal battery according to claim 1, further comprising a lead (1), wherein the lead (1) is connected to the positive electrode tab (2) and the negative electrode tab (9) for conducting current away.
4. A liquid metal flexible battery according to claim 3, characterized in that the lead (1) is a copper lead (1).
5. A liquid metal flexible battery according to claim 1, characterized in that the flexible air electrode (6) comprises a water-proof layer on the inside and a gas-permeable layer on the outside.
6. The liquid metal flexible battery of claim 1, wherein the package body (3) is a polyethylene terephthalate film.
7. The liquid metal flexible battery according to any one of claims 1-6, further comprising a nickel mesh (4), wherein the nickel mesh (4) is encapsulated inside the encapsulation space and is in contact with the liquid metal (8) and the electrolyte solution (7), and wherein the negative electrode tab (9) is connected to the liquid metal (8) through the nickel mesh (4).
8. A wearable device, comprising: the liquid metal flexible battery of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810392895.6A CN108649281B (en) | 2018-04-27 | 2018-04-27 | Liquid metal flexible battery and wearable equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810392895.6A CN108649281B (en) | 2018-04-27 | 2018-04-27 | Liquid metal flexible battery and wearable equipment thereof |
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| Publication Number | Publication Date |
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| CN108649281A CN108649281A (en) | 2018-10-12 |
| CN108649281B true CN108649281B (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810392895.6A Active CN108649281B (en) | 2018-04-27 | 2018-04-27 | Liquid metal flexible battery and wearable equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111416159B (en) * | 2020-03-18 | 2023-04-07 | 浙江大学 | Liquid metal battery capable of adjusting output voltage and current magnitude and direction |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150162641A1 (en) * | 2013-12-09 | 2015-06-11 | Polyplus Battery Company | Protected lithium electrodes having a liquid anolyte reservoir architecture and associated rechargeable lithium battery cells |
| JP6667508B2 (en) * | 2014-09-04 | 2020-03-18 | アモグリーンテック カンパニー リミテッド | Flexible battery, manufacturing method thereof, and auxiliary battery including flexible battery |
| CN105609899A (en) * | 2016-02-16 | 2016-05-25 | 云南科威液态金属谷研发有限公司 | Flexible liquid metal air battery and battery pack |
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