Multilayer homogeneous microporous proton exchange composite membrane
By designing a multilayer homogeneous microporous proton exchange composite membrane, the problem of poor proton exchange membrane quality was solved, improving the performance and stability of the fuel cell and achieving efficient proton conduction and long-life membrane operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BOHONG FUNENG HYDROGEN ENERGY TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-15
AI Technical Summary
Currently, the quality of proton exchange membranes is poor, which cannot effectively improve the performance of fuel cells.
A multilayer homogeneous microporous proton exchange composite membrane is designed, comprising a substrate, a reinforcing layer, a proton transport layer, a methanol barrier layer, an optimization layer, and a protective layer. The combination of these layers improves the stability and functionality of the composite membrane.
It improves the performance and stability of fuel cells, enhances proton conductivity, prevents methanol molecules from passing through, extends service life, and keeps the membrane clean and in good operating condition.
Smart Images
Figure CN224248624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel cell technology, and in particular to a multilayer homogeneous microporous proton exchange composite membrane. Background Technology
[0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel and oxidant into electrical energy through an electrochemical reaction. The working principle of a fuel cell is based on an electrochemical redox reaction.
[0003] As a core component of fuel cells, the proton exchange membrane ensures the performance of fuel cells. However, the quality of current proton exchange membranes is relatively poor, which cannot effectively improve the performance of fuel cells. To address this issue, we propose a multilayer homogeneous microporous proton exchange composite membrane. Utility Model Content
[0004] The purpose of this invention is to provide a multilayer homogeneous microporous proton exchange composite membrane to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A multilayer homogeneous microporous proton exchange composite membrane includes a composite membrane body, wherein a substrate is provided inside the composite membrane body, and a reinforcing layer is provided on the outer surface of the substrate.
[0007] In a further embodiment, the outer surface of the reinforcing layer is provided with a proton transport layer.
[0008] In a further embodiment, the outer surface of the proton transport layer is provided with a methanol barrier layer, and the outer surface of the methanol barrier layer is provided with an optimization layer.
[0009] In a further embodiment, the outer surface of the optimization layer is provided with a protective layer.
[0010] In a further embodiment, the outer surface of the composite membrane body is coated with a first coating.
[0011] In a further embodiment, a second coating is sprayed onto the outer surface of the first coating.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This device uses a substrate and a reinforcing layer as the supporting structure for the composite membrane, improving its performance and providing stable support and effective protection. Through the cooperation of the proton transport layer, methanol barrier layer, and optimization layer, the proton transport layer ensures the electrochemical reaction to proceed while preventing interference from other substances, thus improving the performance and stability of the fuel cell. The methanol barrier layer prevents methanol molecules from passing through, improving the energy conversion efficiency and stability of the battery. The optimization layer improves the membrane performance and regulates the interlayer interactions, thereby enabling the composite membrane to have high practicality. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of a multilayer homogeneous microporous proton exchange composite membrane.
[0015] Figure 2 This is a cross-sectional view of the first coating of a multilayer homogeneous microporous proton exchange composite membrane.
[0016] Figure 3 A multilayer homogeneous microporous proton exchange composite membrane Figure 2 Schematic diagram of the structure at point A in the middle.
[0017] Figure 4 A multilayer homogeneous microporous proton exchange composite membrane Figure 2 Schematic diagram of the structure at point B.
[0018] In the figure: 1. Composite membrane body; 2. Substrate; 3. Reinforcing layer; 4. Proton transport layer; 5. Methanol barrier layer; 6. Optimization layer; 7. Protective layer; 8. First coating layer; 9. Second coating layer. Detailed Implementation
[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-4 In this utility model, a multilayer homogeneous microporous proton exchange composite membrane includes a composite membrane body 1, a substrate 2 is provided inside the composite membrane body 1, and a reinforcing layer 3 is provided on the outer surface of the substrate 2. The substrate 2 and the reinforcing layer 3 can improve the performance of the composite membrane, thereby achieving stable support and effective protection for the composite membrane.
[0023] The outer surface of the reinforcing layer 3 is provided with a proton transport layer 4. The proton transport layer 4 is generally made of a material with good proton conductivity. The proton transport layer 4 has the effects of efficient proton conduction, selective permeation and selective permeation, ensuring that the composite membrane has a high proton conductivity, meeting the high efficiency requirements of proton conduction in applications such as fuel cells, and helping to maintain the ion balance and reaction selectivity inside the fuel cell. The proton transport layer 4 can withstand a certain stress to prevent the membrane from cracking or deforming, thereby ensuring the reliability and service life of the composite membrane body 1 in practical applications.
[0024] The outer surface of the proton transport layer 4 is provided with a methanol barrier layer 5, and the outer surface of the methanol barrier layer 5 is provided with an optimization layer 6. The methanol barrier layer 5 can improve the performance and efficiency of the fuel cell and maintain the output voltage and power of the cell, extend the service life of the cell, and further improve the proton conduction performance. The optimization layer 6 may contain some special additives or have a unique microstructure, which can promote proton conduction and enhance the chemical stability of the membrane. The additives in the optimization layer 6 can resist these adverse factors, prevent the degradation and performance decline of the membrane material, and extend the service life of the composite membrane.
[0025] The outer surface of the optimization layer 6 is provided with a protective layer 7 to block particulate impurities. This can effectively prevent external dust, particles and other impurities from entering the interior of the composite membrane, thus avoiding these impurities from clogging the microporous structure of the membrane and affecting the performance of proton transport and other functional layers. This helps to maintain the cleanliness and good operating condition of the composite membrane.
[0026] The outer surface of the composite membrane body 1 is coated with a first coating 8, and the outer surface of the first coating 8 is coated with a second coating 9. As the first layer that comes into contact with the outside world, the first coating 8 can form a good interface bond with the substrate 2. It can fill the small defects and pores on the surface of the substrate 2, making the surface smoother, thereby enhancing the adhesion between the subsequent coatings or other functional layers and the substrate 2, and improving the stability and reliability of the entire composite membrane structure.
[0027] The working principle of this utility model is as follows:
[0028] First, the structure composed of substrate 2 and reinforcing layer 3 can serve as a support structure for the composite membrane, providing stable support and effective protection. Then, the combination of proton transport layer 4, methanol barrier layer 5, and optimization layer 6 ensures that the electrochemical reaction can proceed while preventing interference from other substances, thus improving the performance and stability of the fuel cell. Methanol barrier layer 5 prevents methanol molecules from passing through, improving the energy conversion efficiency and stability of the battery. Optimization layer 6 improves the membrane performance and regulates interlayer interactions, thereby enhancing the performance of the composite membrane.
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A multilayer homogeneous microporous proton exchange composite membrane, characterized in that: It includes a composite membrane body (1), the interior of which is provided with a substrate (2), and the outer surface of the substrate (2) is provided with a reinforcing layer (3).
2. The multilayer homogeneous microporous proton exchange composite membrane according to claim 1, characterized in that: The outer surface of the reinforcing layer (3) is provided with a proton transport layer (4).
3. The multilayer homogeneous microporous proton exchange composite membrane according to claim 1, characterized in that: The outer surface of the proton transport layer (4) is provided with a methanol barrier layer (5), and the outer surface of the methanol barrier layer (5) is provided with an optimization layer (6).
4. The multilayer homogeneous microporous proton exchange composite membrane according to claim 1, characterized in that, The outer surface of the optimization layer (6) is provided with a protective layer (7).
5. The multilayer homogeneous microporous proton exchange composite membrane according to claim 1, characterized in that: The outer surface of the composite membrane body (1) is coated with a first coating layer (8).
6. The multilayer homogeneous microporous proton exchange composite membrane according to claim 1, characterized in that: The outer surface of the first coating (8) is coated with a second coating (9).