A method and system for analyzing capacitance effect ratio of hybrid supercapacitor

Abstract

The present invention discloses a method and system for analyzing the capacitance effect ratio of a hybrid supercapacitor, which relates to the technical field of power systems, including: preparing hybrid supercapacitor samples with different battery-type electrode mass ratios; determining the total mass of the positive electrode of the hybrid supercapacitor and the mass ratio of its components; performing electrochemical tests on the hybrid supercapacitor samples using cyclic voltammetry; and calculating and analyzing the capacitance effect ratio based on the test results. The capacitance effect ratio analysis method of the hybrid supercapacitor provided by the present invention effectively distinguishes the capacitance effect ratio in the external characteristics of the supercapacitor and the lithium battery according to the different working characteristics of the supercapacitor, thereby ensuring that the capacitance effect in the real working environment can be truly simulated. The optimal control ratio of the composite positive electrode component materials of the hybrid supercapacitor is obtained to solve the problem of long time consumption and poor effect caused by the use of empirical values ​​in the actual production process in the past.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a capacitance effect ratio analysis method and system for a hybrid supercapacitor. Background Art

[0002] Lithium-ion hybrid capacitors have the advantages of both lithium-ion batteries and supercapacitors, and have broad application prospects in the field of electrochemical energy storage. Although the industrialization of lithium-ion hybrid capacitors has made certain progress in the basic and process aspects such as device structure design, electrode material screening, pre-lithium embedding process and electrolyte-electrode interface in recent years, there is still no suitable method for the regulation and performance evaluation of the composite positive electrode materials of lithium-ion battery-type hybrid supercapacitors with internal parallel structure.

[0003] For double-layer supercapacitors, their external characteristics are no different from conventional capacitors, and their capacitance effect accounts for nearly 100%; for lithium batteries, their external characteristics are mainly reflected in the energy storage characteristics near the platform voltage, and their capacitance effect accounts for almost negligible proportion. Hybrid supercapacitors are an energy storage device between supercapacitors and lithium batteries. Analyzing the proportion of their capacitance effect is a requirement to distinguish them from double-layer capacitors and lithium batteries. Currently, there is no reasonable evaluation method to analyze the proportion of capacitance effect in the working characteristics of hybrid supercapacitors. In actual production, the regulation of hybrid supercapacitor composite positive electrode materials often adopts the empirical value method, which is time-consuming and has poor results. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is that in the prior art, for lithium-ion hybrid supercapacitors with an internal parallel structure, there is a lack of an effective quantitative method for accurately evaluating the specific contribution ratio of battery-type electrodes and capacitor-type electrodes in the overall capacitance effect. This defect makes it impossible to systematically optimize the electrode composition ratio during the ratio control process of the composite positive electrode material, making it difficult to significantly improve the performance of the supercapacitor and give full play to its application potential.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for analyzing the capacitance effect ratio of a hybrid supercapacitor, comprising:

[0007] Prepare hybrid supercapacitor samples with different mass proportions of battery-type electrodes and capacitor-type electrodes in the positive electrode; measure the mass of the positive electrode, the mass of the battery-type electrode, the mass proportion of the battery-type electrode and the mass proportion of the capacitor-type electrode of the hybrid supercapacitor samples; perform electrochemical tests on the hybrid supercapacitor samples using cyclic voltammetry to obtain a cyclic voltammetry characteristic diagram; calculate the capacitance effect proportion based on the data of the cyclic voltammetry characteristic diagram and perform capacitance effect proportion analysis; the capacitance effect proportion analysis includes, for different battery-type electrode mass proportions in the hybrid supercapacitor, prepare corresponding hybrid supercapacitor samples and perform the cyclic voltammetry test to obtain the corresponding capacitance effect proportion; draw a relationship curve between the capacitance effect proportion and the battery-type electrode mass proportion in the hybrid supercapacitor with the battery-type electrode mass proportion as the horizontal coordinate and the capacitance effect proportion as the vertical coordinate; calculate the integral area on the drawn relationship curve and solve for the extreme value point of the integral area ; When the mass proportion of battery type electrode is When , the control ratio of the hybrid supercapacitor composite positive electrode material is optimal.

[0008] As a preferred solution of the capacitance effect ratio analysis method of the hybrid supercapacitor described in the present invention, the electrochemical test includes using at least one scanning rate to perform the test and obtain a cyclic voltammetric characteristic diagram.

[0009] As a preferred solution of the capacitance effect ratio analysis method of the hybrid supercapacitor described in the present invention, wherein: the scanning rate does not exceed 10mV / s.

[0010] As a preferred solution of the capacitance effect ratio analysis method of the hybrid supercapacitor described in the present invention, wherein: the calculation of the capacitance effect ratio includes extracting the voltage value corresponding to the maximum current on each set of cyclic voltammetric characteristic diagrams; calculating the average voltage value; extracting the current value corresponding to the average voltage value at different scanning rates; performing linear fitting on the current value to obtain the fitting coefficient of the capacitance electrode contribution value and battery type electrode contribution value fitting coefficient ; Calculate the proportion of capacitance effect .

[0011] As a preferred solution of the capacitance effect ratio analysis method of the hybrid supercapacitor of the present invention, wherein: the linear fitting is expressed as,

[0012] ,

[0013] in, is the average value of the voltage corresponding to the maximum current in each set of cyclic voltammetric characteristics diagram, is the rated current of the hybrid supercapacitor, is the scanning rate.

[0014] Another object of the present invention is to provide a capacitance effect ratio analysis system for a hybrid supercapacitor, which can solve the problem of regulation and performance evaluation of composite positive electrode materials of lithium-ion battery-type supercapacitors with an internal parallel structure by constructing a capacitance effect ratio analysis system for a hybrid supercapacitor.

[0015] To solve the above technical problems, the present invention provides the following technical solutions: a capacitance effect ratio analysis system for a hybrid supercapacitor, comprising: a mass measurement module for determining the total mass of the positive electrode of the hybrid supercapacitor and the mass ratio of its components; a sample preparation module for preparing hybrid supercapacitor samples with different battery-type electrode mass ratios; a cycle test module for performing electrochemical testing on the hybrid supercapacitor samples using cyclic voltammetry; and a data analysis module for calculating and analyzing the capacitance effect ratio based on the test results.

[0016] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the capacitance effect ratio analysis method of the hybrid supercapacitor as described above are implemented.

[0017] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the capacitance effect ratio analysis method of the hybrid supercapacitor as described above.

[0018] Beneficial effects of the present invention: The capacitance effect ratio analysis method of the hybrid supercapacitor provided by the present invention, firstly, accurately distinguishes and determines the specific ratio of capacitance effect of the two in the overall electrochemical performance according to the difference in electrochemical working characteristics between supercapacitors and lithium batteries, thereby ensuring that the analysis method can truly reflect the capacitance effect performance in the actual working environment. Secondly, through the method of the present invention, the optimal mass ratio of battery-type electrodes and capacitor-type electrodes in the composite positive electrode material of the hybrid supercapacitor can be accurately determined to achieve scientific regulation of the material ratio. It effectively overcomes the problems of long time consumption and unstable effect caused by relying on empirical values ​​for material ratio in the traditional production process, and improves the accuracy and optimization efficiency of material ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 An overall flow chart of a capacitance effect ratio analysis method for a hybrid supercapacitor provided by an embodiment of the present invention.

[0021] Figure 2 A CV curve diagram of a capacitance effect ratio analysis method for a hybrid supercapacitor provided by an embodiment of the present invention.

[0022] Figure 3 A schematic diagram of a fitting formula for a capacitance effect ratio analysis method of a hybrid supercapacitor provided in one embodiment of the present invention.

[0023] Figure 4 A graph showing changes in the capacitance effect ratio of a hybrid supercapacitor according to an embodiment of the present invention.

[0024] Figure 5 An optimal control ratio diagram of composite positive electrode component materials of a hybrid supercapacitor for a capacitance effect ratio analysis method of a hybrid supercapacitor provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Example 1

[0028] Reference Figure 1-Figure 5 , as an embodiment of the present invention, provides a capacitance effect ratio analysis method of a hybrid supercapacitor, comprising:

[0029] Step S1: preparing hybrid supercapacitor samples with different mass proportions of battery-type electrodes and capacitor-type electrodes in the positive electrode.

[0030] Step S2: measuring the mass of the positive electrode, the mass of the battery-type electrode, the mass ratio of the battery-type electrode and the mass ratio of the capacitor-type electrode of the hybrid supercapacitor sample.

[0031] Measure the total mass of the positive electrode of the hybrid supercapacitor and the mass contribution of its components.

[0032] The measurement consists in determining the positive electrode mass as , where the mass of the battery-type electrode is , then the mass proportion of battery type electrodes is , the mass ratio of the capacitive electrode is 1-r.

[0033] Step S3: Performing electrochemical testing on the hybrid supercapacitor sample using cyclic voltammetry to obtain a cyclic voltammetry characteristic diagram.

[0034] The electrochemical test includes testing using at least one scan rate to obtain a cyclic voltammetric characteristic diagram.

[0035] In a preferred embodiment of the present invention, there are five scanning rates, different scanning rates They are =1mV / s, =2.25mV / s, =4mV / s, =6.25mV / s, =9mV / s, and the scanning rate does not exceed 10mV / s. These five frequencies are the preferred frequency points of the method of this embodiment, and in the later data analysis, The data is distributed in an arithmetic progression, which makes it more accurate when fitting the data linearly.

[0036] Step S4: Calculate the capacitance effect ratio based on the data of the cyclic voltammetry characteristic diagram and perform capacitance effect ratio analysis.

[0037] Calculating the capacitance effect ratio includes:

[0038] Step S4.1: extracting the voltage value corresponding to the maximum current on each set of cyclic voltammetric characteristic diagrams;

[0039] Step S4.2: Calculate the average voltage value;

[0040] Step S4.3: extracting the current value corresponding to the average voltage value at different scanning rates;

[0041] Step S4.4: Perform linear fitting on the current value to obtain the fitting coefficient of the capacitive electrode contribution value and battery type electrode contribution value fitting coefficient , expressed as,

[0042] ,

[0043] in, is the average value of the voltage corresponding to the maximum current in each set of cyclic voltammetric characteristics diagram, is the rated current of the hybrid supercapacitor, is the scan rate. Calculate the capacitance effect ratio The fitting of the experimental data here only involves the linear fitting of one-dimensional data, and the least squares method is used for fitting.

[0044] Step S4.5: performing capacitance effect ratio analysis, including, for different battery-type electrode mass ratios in the hybrid supercapacitor, preparing corresponding hybrid supercapacitor samples and performing cyclic voltammetry tests to obtain corresponding capacitance effect ratios;

[0045] Step S4.6: With the battery-type electrode mass ratio as the horizontal coordinate and the capacitance effect ratio as the vertical coordinate, a curve of the relationship between the capacitance effect ratio and the battery-type electrode mass ratio in the hybrid supercapacitor is drawn;

[0046] Step S4.7: Calculate the integral area on the drawn relationship curve and find the extreme point of the integral area ; When the mass proportion of battery type electrode is When the hybrid supercapacitor obtains the largest marginal effect of capacitance improvement by sacrificing energy density, the hybrid supercapacitor has the largest marginal effect of capacitance improvement by sacrificing energy density. When the mass proportion of battery-type electrodes is less than When the hybrid supercapacitor obtains the capacitance effect by sacrificing energy density, the marginal effect decreases; when the mass proportion of the battery-type electrode is greater than When the hybrid supercapacitor obtains the marginal effect of capacitance improvement by sacrificing energy density, the hybrid supercapacitor obtains the marginal effect of capacitance improvement by sacrificing energy density; therefore, when the mass proportion of battery-type electrodes is When , the control ratio of the hybrid supercapacitor composite positive electrode material is optimal.

[0047] It should be noted that at the extreme point, the composite positive electrode material of the hybrid supercapacitor uses less battery-type electrode material, which reduces the cost of rare metal materials while achieving a greater increase in energy density and a smaller loss in capacitance effect, thus ensuring that the hybrid supercapacitor has a higher cost-effectiveness.

[0048] The scheme of the present invention, starting from the application perspective of hybrid supercapacitors, separates the capacitance effect from its external electrical characteristics, thereby obtaining a quantitative evaluation method for the capacitance effect in hybrid supercapacitors, and further obtaining the optimal ratio of the composite positive electrode material of hybrid supercapacitors on this basis. The scheme of the present invention has practical significance in guiding actual production, provides a novel perspective from the user's perspective, and proposes a guiding idea of ​​maximizing demand for the manufacture of hybrid supercapacitors. At the emerging stage of hybrid supercapacitor development, it has positive significance in promoting the development of the industry.

[0049] Example 2

[0050] According to an embodiment of the present invention, a capacitance effect ratio analysis system of a hybrid supercapacitor is provided, comprising:

[0051] A mass determination module for determining the total mass of the positive electrode of the hybrid supercapacitor and the mass proportions of its components;

[0052] A sample preparation module, used to prepare hybrid supercapacitor samples with different battery-type electrode mass ratios;

[0053] a cyclic testing module, used for performing electrochemical testing on the hybrid supercapacitor sample by cyclic voltammetry; and

[0054] The data analysis module is used to calculate and analyze the capacitance effect ratio based on the test results.

[0055] Example 3

[0056] An embodiment of the present invention is different from the first two embodiments in that:

[0057] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0058] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0059] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0060] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0061] Example 4

[0062] Reference Figure 1-Figure 5 , as an embodiment of the present invention, provides a capacitance effect ratio analysis method of a hybrid supercapacitor, comprising:

[0063] Hybrid supercapacitor samples with different battery-type electrode mass ratios were prepared.

[0064] In this embodiment, a group of hybrid supercapacitors with different battery-type electrode mass ratios are prepared.

[0065] Measure the total mass of the positive electrode of the hybrid supercapacitor and the mass contribution of its components.

[0066] The measurement of this embodiment includes: the mass of the positive electrode of the hybrid supercapacitor is , where the mass of the battery-type electrode is , then the mass proportion of battery type electrodes is , the mass ratio of the capacitive electrode is 1-r.

[0067] In an optional embodiment, ten hybrid supercapacitors are prepared with battery-type electrode mass ratios of 0.1, 0.2, 0.3...0.9, and 0.99, respectively.

[0068] The hybrid supercapacitor sample is electrochemically tested by cyclic voltammetry to obtain a cyclic voltammetry characteristic diagram.

[0069] This embodiment uses cyclic voltammetry to test the hybrid supercapacitor at different scan rates.

[0070] In an optional embodiment, a cyclic voltammetry test is performed on a hybrid supercapacitor with a battery-type electrode mass ratio of 0.5.

[0071] Cyclic voltammetry test with different scan rates They are =1mV / s, =2.25mV / s, =4mV / s, =6.25mV / s, =9mV / s; so that It presents a uniform distribution, which is convenient for fitting the subsequent test data.

[0072] During the cyclic voltammetry test, the current values ​​at different voltages are recorded to obtain the cyclic voltammetry characteristic diagram of the hybrid supercapacitor, referred to as the CV diagram.

[0073] At different scanning rates, a set of CV curves was obtained, and a total of five sets of CV curves were obtained.

[0074] The capacitance effect ratio is calculated based on the data of the cyclic voltammetry characteristic diagram and the capacitance effect ratio analysis is performed.

[0075] In this embodiment, on each set of CV curves, the voltage value U corresponding to the maximum current in the CV data is extracted, and a total of five sets of voltages are obtained, which are respectively , , , and .

[0076] make ,

[0077] For a scan rate of =1mV / s to obtain the CV curve of the cyclic voltammetry test, such as Figure 2 As shown, different types of supercapacitors have different operating voltage ranges, and the maximum and minimum voltages in the coordinate diagram will also be different. In the figure, the voltage value corresponding to the maximum current is 2.9V, then .

[0078] Similarly, we can get =2.25mV / s, =4mV / s, =6.25mV / s, =9mV / s The voltage value at four scanning frequencies is , , , , so we can get .

[0079] Under the above five different scanning frequencies, the corresponding voltage in the extracted CV data is Current value , where n=1,2,3,4,5;

[0080] for and Perform a linear fit, such as Figure 3 As shown, the fitting formula is obtained:

[0081] ,

[0082] in, is the average value of the voltage corresponding to the maximum current of the five groups of CV curves, is the rated current of the hybrid supercapacitor, is the scanning rate, is the contribution value of the capacitive electrode in the hybrid supercapacitor, Contribution value of battery-type electrodes in hybrid supercapacitors.

[0083] Can get , .

[0084] The contribution of the capacitive electrode in the hybrid supercapacitor can be obtained as , the battery type electrode contribution is , then the capacitance effect accounts for .

[0085] Repeat the above method for the mass ratio of battery type electrodes When is different value, cyclic voltammetry test is carried out respectively to obtain the e value corresponding to r.

[0086] A curve is drawn with r as the horizontal coordinate and e as the vertical coordinate. From the curve, we can obtain the change in the proportion of the capacitance effect brought about by the hybrid supercapacitor when the mass proportion of the battery-type electrode is different, such as Figure 4 shown.

[0087] On the resulting er coordinate graph, i.e. the curve described above, calculate the integrated area , and solve to obtain the extreme point of the integral area By using computer-aided methods, according to the concave and convex characteristics of the curve, the extreme points are obtained by iterative approximation. , which means that the mass proportion of the battery type electrode is When the optimal ratio of the composite positive electrode materials of the hybrid supercapacitor is obtained, Figure 5 shown.

[0088] By calculating the integral area , and obtain the extreme points of the integral area by solving its derivative, for example, Figure 5 As shown, the value of the horizontal axis lead is 0.75, which means that when the battery-type electrode accounts for 75% of the hybrid supercapacitor composite positive electrode material, the hybrid supercapacitor can maintain the maximum energy density while maintaining the maximum capacitance effect. This embodiment determines through experiments that when When , it is the optimal control ratio of the composite positive electrode components of the hybrid supercapacitor. At this time, the hybrid supercapacitor maintains the maximum energy density while maintaining the maximum capacitance effect ratio.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for analyzing the capacitance effect ratio of a hybrid supercapacitor, characterized in that: include: Preparation of hybrid supercapacitor samples with different mass proportions of battery-type electrodes and capacitor-type electrodes in the positive electrode; Measure the mass of the positive electrode, the mass of the battery-type electrode, the mass proportion of the battery-type electrode, and the mass proportion of the capacitor-type electrode of the hybrid supercapacitor sample; Performing electrochemical testing on the hybrid supercapacitor sample by cyclic voltammetry to obtain a cyclic voltammetry characteristic diagram; Calculate the capacitance effect ratio based on the data of the cyclic voltammetry characteristic diagram and perform capacitance effect ratio analysis; The capacitance effect ratio analysis includes: For different battery-type electrode mass proportions in the hybrid supercapacitor, corresponding hybrid supercapacitor samples are prepared and the cyclic voltammetry test is performed to obtain the corresponding capacitance effect proportions; With the battery-type electrode mass ratio as the horizontal axis and the capacitance effect ratio as the vertical axis, a curve of the relationship between the capacitance effect ratio and the battery-type electrode mass ratio in the hybrid supercapacitor is drawn; On the drawn relationship curve, calculate the integral area and solve for the extreme point r0 of the integral area; When the mass proportion of the battery-type electrode is r0, the control ratio of the hybrid supercapacitor composite positive electrode material is optimal; The calculation of the capacitance effect ratio includes: Extract the voltage value corresponding to the maximum current on each set of cyclic voltammetric characteristic diagrams; Calculate the average voltage value; At different scanning rates, the current value corresponding to the average voltage value is extracted; Performing linear fitting on the current value to obtain a capacitance type electrode contribution value fitting coefficient k1 and a battery type electrode contribution value fitting coefficient k2; Calculate the capacitance effect ratio e=k1 / (k1+k2); The linear fit is expressed as, Among them, U0 is the average value of the voltage value corresponding to the maximum current in each set of cyclic voltammetric characteristics, I N is the rated current of the hybrid supercapacitor, and ν is the scan rate.

2. The method for analyzing the capacitance effect ratio of a hybrid supercapacitor according to claim 1, characterized in that: The electrochemical test includes: The test is performed using at least one scan rate to obtain a cyclic voltammetry characteristic diagram.

3. The capacitance effect ratio analysis method of the hybrid supercapacitor according to claim 2, characterized in that: The scanning rate does not exceed 10 mV / s.

4. A system using the capacitance effect ratio analysis method of a hybrid supercapacitor as claimed in any one of claims 1 to 3, characterized in that: include: A mass determination module for determining the total mass of the positive electrode of the hybrid supercapacitor and the mass proportions of its components; A sample preparation module, used to prepare hybrid supercapacitor samples with different battery-type electrode mass ratios; A cyclic testing module, used for performing electrochemical testing on the hybrid supercapacitor sample by cyclic voltammetry; as well as, The data analysis module is used to calculate and analyze the capacitance effect ratio based on the test results.

5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the capacitance effect ratio analysis method of the hybrid supercapacitor according to any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the capacitance effect ratio analysis method of the hybrid supercapacitor according to any one of claims 1 to 3 are implemented.

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