CN212366032U

CN212366032U - Laminar transient zinc ion battery

Info

Publication number: CN212366032U
Application number: CN202021515223.9U
Authority: CN
Inventors: 周俊杰; 罗明辅; 曹金超; 田伟; 张润豪
Original assignee: New Material Institute of Shandong Academy of Sciences
Current assignee: New Material Institute of Shandong Academy of Sciences
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-01-15
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a slice transient state zinc ion battery, including outer two the same silk fibroin packaging film and inside cavities along sealed, place the battery subject portion in the cavity, the battery subject portion is from last to being mass flow body, anodal film, electrolyte film, negative pole film and silk fibroin basement down in proper order, and the mass flow body includes silk fibroin film and the gold grained layer on it, and the mass flow body passes through the opposite side and the anodal film bonding of the relative silk fibroin film of gold grained layer and fixes, and the size homogeneous phase of each membrane is the same in the battery subject portion. The utility model discloses utilize multiple lamellar subassembly combination to form novel lamellar transient state zinc ion battery, its preparation simple process, reasonable in design, cost of manufacture are low, can be in the controllable degradation of internal whole when providing good electrochemical performance, can be applied to in medical research and the clinical treatment, have extremely strong economic benefits and social.

Description

Laminar transient zinc ion battery

Technical Field

The utility model relates to a solid-state battery technical field, concretely relates to slice transient state zinc ion battery.

Background

Currently, various electronic devices are full of human civilization. With the development of technology and the enhancement of environmental awareness, the conventional electronic devices have been unable to meet the current demands. Therefore, emerging products such as transient electronic devices have entered human lives and have played an increasingly important role in medical, communication and defense. Transient electronic devices are a significant advance over current electronic devices, consisting primarily of degradable polymer substrates/packaging materials, transient interconnects and semiconductors. After the transient electronic device performs the designated function, the assembly may be fully degraded at a controlled rate, in part or according to the needs of the user. Transient electronic devices combine advanced transient materials with conventional electronic processing techniques to achieve the same performance as conventional electronic devices without generating additional electronic waste. In addition, those implantable transient medical electronics devices have wide application in clinical diagnosis and therapy. However, conventional medical electronics still need to be surgically removed after completing their task. This cumbersome procedure can cause secondary trauma to the patient, increase patient pain, and present a risk of wound infection and various chronic inflammations. Emerging transient medical devices are implantable, biodegradable, and thus can be easily removed from a patient without the need for re-surgery. More importantly, the biocompatibility of the transient electronics is also superior to that of traditional implantable medical electronics because the degradation products of the transient electronics are non-toxic and can degrade in the patient after diagnosis and treatment is completed. Although biodegradable materials (silk proteins, soluble metals, polymers, etc.) have been extensively studied and have been used in various biosensors, semiconductor functional devices and degradable medical devices, significant challenges remain in developing transient energy devices. Two main reasons are the choice of material for the implantable energy device. This greatly limits the choice of materials due to the requirement for energy devices with good degradation and high energy storage capacity. Another aspect is the biocompatibility and toxicity of the implantable energy device before and after degradation. In particular, heavy metal ions, polymers, organic electrolytes and other toxic substances generated after the degradation of conventional electrode materials can greatly endanger the life and health of patients.

The existing transient zinc ion battery on the market at present is complex in structure, and due to unreasonable design, the transient zinc ion battery cannot be well used after being implanted into a body, so that the transient zinc ion battery with simple structure and reasonable design is urgently needed to solve the problems and meet the use requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned prior art, provide a slice transient state zinc ion battery, simple structure, reasonable in design have extremely strong economic benefits and are fit for carrying out large-scale production.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a laminar transient state zinc ion battery, includes two the same silk fibroin packaging film of outer edge seal and inside cavity thereof, place battery main part in the cavity, battery main part is from last to being down for mass flow body, anodal film, electrolyte film, negative pole film and silk fibroin base in proper order, and the length and width of each structure is 1.5cm in the battery main part.

The current collector comprises a silk fibroin film and a gold particle layer sprayed on the silk fibroin film, and is fixedly bonded with the positive electrode film through the other side of the gold particle layer relative to the silk fibroin film.

The thickness of the gold particle layer is less than 100nm, gold is used as the metal with the best natural conductivity, and the gold is sprayed on the surface layer of the silk fibroin film, so that the silk fibroin film has the excellent conductivity, the resistance is only 0.5 omega, and the gold particle layer can be used as a current collector.

The positive electrode film is a manganese dioxide-graphene film, the thickness of the positive electrode film is 0.5mm, and the manganese dioxide and the graphene are mixed, so that the electrochemical performance of the transient battery can be greatly improved, and a primary battery can be converted into a highly reversible solid-state battery.

The electrolyte film is a nanocellulose-gelatin composite aerogel film, the thickness of the nanocellulose-gelatin composite aerogel film is 1mm, a good supporting effect can be provided, and the nanocellulose-gelatin composite aerogel film is a degradable material and facilitates the complete degradation of the battery in vivo.

The negative electrode film is a zinc particle film, the diameter of zinc particle particles is 10 mu m, the thickness of the zinc particle particles is 60 mu m, the resistance range is 0.1-1 omega, and the negative electrode film is bonded and fixed through an electrolyte film on the other side of the zinc particle layer relative to the silk fibroin substrate. The zinc particles replace zinc foil to serve as the battery cathode, so that the surface area of the cathode in contact with the solid electrolyte can be increased, the battery charging and discharging efficiency is higher, and the cycle performance is better. And the zinc particles can be degraded in a liquid environment, so that the transient battery can achieve the effect of rapid degradation after the transient battery plays a role.

The silk fibroin substrate is 0.5mm in thickness, can provide a better supporting effect for the zinc particle film, and is a degradable material, so that the whole degradation of the battery in vivo is facilitated.

The silk fibroin packaging film is of a double-layer structure, the length and the width of the silk fibroin packaging film are both 2cm, the thickness of the silk fibroin packaging film is 0.5mm, the silk fibroin packaging film is prepared by pressing the silk fibroin packaging film through a thermoplastic packaging machine, and the silk fibroin packaging film has heat sealability and flexibility and can be used as a non-immunogenicity diffusion barrier of water. And the biological macromolecular material is a natural biological macromolecular material, has simple and easily obtained raw materials, has good biocompatibility, cannot cause harm to human bodies, and can be slowly degraded under the action of various proteases.

The utility model discloses utilize multiple lamellar subassembly combination to form novel lamellar transient state zinc ion battery, its preparation simple process, reasonable in design, cost of manufacture are low, can be in internal whole degradation when providing good electrochemical performance, can be applied to in medical research and the clinical treatment, have extremely strong economic benefits and social.

Drawings

FIG. 1 is a schematic view of a battery package;

FIG. 2 is a schematic view showing a structure of a main body part of a battery;

wherein, 1, the silk fibroin packaging film; 2. a battery body portion; 21. silk fibroin film; 22. a gold particle layer; 23. a positive electrode film; 24. an electrolyte film; 25. a negative electrode film; 26. a silk fibroin substrate.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1-2, the lamellar transient zinc-ion battery comprises a battery main body part 2 and two identical silk fibroin packaging films 1, wherein the outer edges of the two silk fibroin packaging films 1 are sealed, a cavity is formed inside the two silk fibroin packaging films 1, and the battery main body part 2 is placed in the cavity. The silk fibroin packaging film 1 is pressed into a double-layer structure by a thermoplastic packaging machine. The battery main body part 2 is sequentially provided with a current collector, a positive electrode film 23, an electrolyte film 24, a negative electrode film 25 and a silk fibroin substrate 26 from top to bottom, and the length and the width of each structure are 1.5 cm. The current collector comprises a silk fibroin film 21 and a gold particle layer 22 sprayed on the silk fibroin film 21, wherein the thickness of the gold particle layer 22 is less than 100nm, gold is used as the metal with the best natural conductivity, the gold is sprayed on the surface layer of the silk fibroin film 21, the silk fibroin film 21 has the excellent conductivity, and the resistance is only 0.5 omega, so that the silk fibroin film can be used as the current collector, the current collector is bonded and fixed with a positive electrode film 23 through the other side of the gold particle layer 22 relative to the silk fibroin film 21, a negative electrode film 25 is a zinc particle film, the diameter of zinc particle particles is 10 mu m, the thickness of the zinc particle particles is 60 mu m, the resistance range is 0.1-1 omega, and the negative electrode film is bonded and fixed through an electrolyte film on the other side of the zinc particle layer. The zinc particles replace zinc foil to serve as the battery cathode, so that the surface area of the cathode in contact with the solid electrolyte can be increased, the battery charging and discharging efficiency is higher, and the cycle performance is better. And the zinc particles can be degraded in a liquid environment, so that the transient battery can achieve the effect of rapid degradation after the transient battery plays a role.

The length and width of each film in the cell main body part 2 were 1.5 cm. The positive electrode film 23 is a manganese dioxide-graphene film, the thickness of the positive electrode film is 0.5mm, the electrochemical performance of the transient battery can be greatly improved, and a primary battery is converted into a highly reversible solid battery; the electrolyte film is a nanocellulose-gelatin composite aerogel film, the thickness of the nanocellulose-gelatin composite aerogel film is 1mm, a good supporting effect can be provided, and the nanocellulose-gelatin composite aerogel film is a degradable material and facilitates the complete degradation of the battery in vivo.

During manufacturing, a gold particle layer 22 is sprayed on the surface of the silk fibroin film 21, the other side of the gold particle layer 22, which is opposite to the silk fibroin film 21, is indirectly fixed with the manganese dioxide-graphene film, then films of the battery main body part 2 are sequentially bonded, after the completion, the battery main body part 2 is wrapped by two silk fibroin packaging films 1, the outer edges of the silk fibroin packaging films 1 are sealed by a thermoplastic packaging machine, and the two silk fibroin packaging films are pressed into a double-layer structure, so that the whole assembly of the battery is completed.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. A laminar transient zinc ion battery comprises two same silk fibroin packaging films with sealed outer edges and an inner cavity, and is characterized in that a battery main body part is placed in the cavity, the battery main body part sequentially comprises a current collector, an anode film, an electrolyte film, a cathode film and a silk fibroin substrate from top to bottom, and the length and the width of each structure in the battery main body part are 1.5 cm.

2. The laminar transient zinc-ion battery of claim 1, wherein the current collector comprises a silk fibroin film and a gold particle layer sprayed thereon, and the current collector is bonded and fixed with the positive electrode film through the other side of the gold particle layer relative to the silk fibroin film.

3. The lamellar transient zinc-ion battery of claim 2, wherein said layer of gold particles has a thickness of less than 100 nm.

4. The laminar transient zinc ion battery of claim 1, wherein said positive electrode film is a manganese dioxide-graphene film having a thickness of 0.5 mm.

5. The laminar transient zinc ion battery of claim 1, wherein said electrolyte film is a nanocellulose-gelatin composite aerogel film having a thickness of 1 mm.

6. The laminar transient zinc ion battery according to claim 1, wherein said negative electrode film is a zinc fine particle film in which the zinc fine particle has a particle diameter of 10 μm, a thickness of 50 μm, and a resistance in the range of 0.1 to 1 Ω.

7. The lamellar transient zinc-ion battery of claim 1, wherein the silk fibroin packaging film has a double-layer structure, both length and width of 2cm and thickness of 0.5 mm.