Novel device for testing discharge hydrogen evolution and anode utilization rate of magnesium anode material
By designing a magnesium anode material testing device including a shell, a hydrogen collection mechanism and a sealing ring, the problems of electrolyte leakage and inaccurate measurement of hydrogen gas are solved, and the accuracy and stability of the discharge hydrogen analysis and utilization test of magnesium anode material are achieved.
Patent Information
- Application Number
- CN202421786388.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing magnesium-air battery test devices have problems such as the possibility of leakage of electrolyte, corrosion products covering the anode surface, resulting in smaller contact area, and inaccurate measurement of hydrogen gas, which affects the accuracy of the test of discharge hydrogen and utilization of the anode material.
A new type of discharge hydrogen analysis and anode utilization test device was designed for magnesium anode material, including a shell, a hydrogen collection mechanism and a sealing ring. It contacts the electrolyte through a platinum wire electrode, uses a funnel back cover to prevent hydrogen from overflowing, and detects the hydrogen amount through an acid-base buret.
The device can prevent electrolyte leakage, accurately measure the amount of hydrogen precipitated when the magnesium anode is discharged, and provides data to support the calculation of the anode utilization rate, ensuring the stability and accuracy of the test.
Smart Images
Figure CN222994385U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of magnesium-air batteries, and particularly relates to a test device for novel hydrogen evolution during discharge and anode utilization rate of a magnesium anode material. Background Art
[0002] A magnesium-air battery is a new type of chemical power source that uses oxygen in the air as the cathode active substance and metallic magnesium as the anode to undergo an oxidation-reduction reaction, thereby generating electrical energy. It has received increasing attention due to its simple structure, economy, and environmental friendliness. Its theoretical voltage can reach 3.1V, and its theoretical energy density can reach 6.8 KWh kg-1, so it has been widely used in many fields. However, due to the deficiencies of the test device during the discharge of the magnesium anode, there are problems in practical applications such as easy leakage of the electrolyte, the contact area between the anode and the electrolyte becoming smaller due to corrosion products covering the anode surface, difficult circulation of the electrolyte, inaccurate measurement of the hydrogen gas volume collected during the discharge of the magnesium-air battery anode material, and inaccurate calculation of the anode utilization rate after the test. Content of the Utility Model
[0003] In order to overcome the deficiencies existing in the prior art, the utility model provides a test device for novel hydrogen evolution during discharge and anode utilization rate of a magnesium anode material. The test device can prevent liquid leakage and accurately measure the volume of hydrogen gas evolved during the discharge of the magnesium anode, providing data support for calculating the anode utilization rate.
[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows:
[0005] A test device for novel hydrogen evolution during discharge and anode utilization rate of a magnesium anode material includes a base, a housing arranged on the base, and a hydrogen gas collection mechanism arranged on the housing for collecting the generated hydrogen gas. Among them,
[0006] A platinum wire electrode is arranged at the upper end of the housing. The platinum wire electrode is installed on the housing, and the lower end of the platinum wire electrode extends into the housing and contacts the electrolyte in the housing.
[0007] A fixing hole is arranged at the bottom of the housing. A metal sample to be tested is installed in the fixing hole, and a sealing ring is arranged between the metal sample to be tested and the fixing hole.
[0008] The hydrogen gas collection mechanism includes a support arranged in the housing and a funnel arranged on the support. Among them, there are multiple groups of supports, and the multiple groups of supports are arranged along the circumferential direction of the fixing hole; the funnel is buckled on the support.
[0009] Preferably, it further includes a detection mechanism for detecting the amount of hydrogen collected by the hydrogen collection mechanism; the detection mechanism includes an acid-base burette installed on the housing, the lower end of the acid-base burette communicates with the lower orifice of the funnel, and a liquid column is sucked in the acid-base burette.
[0010] Preferably, the size of the housing is 115mm x 115mm x 120mm; the funnel has a tube length of 75mm, an upper orifice diameter of φ75mm, and a lower orifice diameter of φ7.5mm; the acid-base burette has a specification of 50ml.
[0011] Preferably, there are four groups of the supports, and the included angle between two adjacent groups of supports is 90 degrees.
[0012] Preferably, the diameter of the support is 5mm and the height is 5mm.
[0013] Preferably, the inner diameter of the fixing hole is 14mm.
[0014] Preferably, the electrolyte is a neutral aqueous solution of sodium chloride.
[0015] Preferably, a foam board is provided on the housing, and the acid-base burette and the platinum wire electrode are both installed on the foam board.
[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0017] 1. The test device for the novel hydrogen evolution by discharge and anode utilization rate of the magnesium anode material of the present invention can prevent liquid leakage and accurately measure the volume of hydrogen gas evolved during the discharge of the magnesium anode, providing data support for calculating the anode utilization rate.
[0018] 2. By reversely covering the funnel on the support of the test device for the novel hydrogen evolution by discharge and anode utilization rate of the magnesium anode material of the present invention, the electrolyte can enter the inside of the funnel to contact the metal sample to be tested, allowing the dissolved magnesium ions and hydroxide ions to escape, thereby ensuring the stable progress of the discharge test of the anode material; in addition, reversely covering the funnel on the support inside the housing enables the electrolyte to be effectively updated and circulated in real time, so that the situation of a sharp increase in the pH value of the local electrolyte does not occur.
[0019] 3. The test device for the novel hydrogen evolution by discharge and anode utilization rate of the magnesium anode material of the present invention measures the hydrogen evolution amount during the anode discharge process by the water displacement method, and reversely covering the funnel can effectively prevent hydrogen gas from overflowing outside the funnel.
[0020] 4. The test device for the novel hydrogen evolution during discharge and anode utilization rate of the magnesium anode material of the present utility model installs the metal sample to be tested in the fixed hole and seals it with a sealing ring. This can not only ensure that the metal sample to be tested does not move during the reaction, but also ensure that the electrolyte in the shell does not leak. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural view of the test device for the novel hydrogen evolution during discharge and anode utilization rate of the magnesium anode material of the present utility model.
[0022] Figure 2 is a sectional view (removing the acid-base burette) of the test device for the novel hydrogen evolution during discharge and anode utilization rate of the magnesium anode material of the present utility model.
[0023] In the figure: 1 - acid-base burette, 2 - funnel, 3 - foam board, 4 - shell, 5 - screw, 6 - base, 7 - metal sample, 8 - sealing ring, 9 - metal wire, 10 - platinum wire electrode, 11 - support. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The present utility model will be further described in detail below in conjunction with the embodiments and the drawings, but the embodiments of the present utility model are not limited thereto.
[0025] See Figure 1 - Figure 2, the test device for the novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model includes a base 6, a housing 4 provided on the base 6, and a hydrogen collection mechanism provided on the housing 4 for collecting the generated hydrogen. Among them, a platinum wire electrode 10 (the platinum wire electrode 10 serves as the cathode) is provided at the upper end of the housing 4. The platinum wire electrode 10 is installed on the housing 4, and the lower end of the platinum wire electrode 10 extends into the housing 4 and contacts the electrolyte in the housing 4; a fixing hole is provided at the bottom of the housing 4, the inner diameter of the fixing hole is 14 mm, and the metal sample 7 to be tested is installed in the fixing hole. The housing 4 is fixed on the base 6 by screws 5 to prevent the metal sample 7 to be tested from moving; and a sealing ring 8 is provided between the metal sample 7 to be tested and the fixing hole. By using the sealing ring 8 for sealing, the electrolyte in the housing 4 is prevented from leaking; the hydrogen collection mechanism includes a support 11 provided in the housing 4 and a funnel 2 provided on the support 11. Among them, there are four groups of the supports 11, and the four groups of supports 11 are arranged along the circumferential direction of the fixing hole, that is, the included angle between two adjacent groups of supports 11 is 90 degrees; the diameter of each group of supports 11 is 5 mm and the height is 5 mm; the funnel 2 is buckled on the support 11. The purpose is to allow the electrolyte to enter the funnel 2 to react with the metal sample 7 to be tested, so that the dissolved magnesium ions and hydroxide ions come out. At the same time, in this embodiment, the drainage method is used to measure the hydrogen evolution amount of the anode (that is, the metal sample 7 to be tested) during the discharge process, and the funnel 2 being buckled can effectively prevent the hydrogen from overflowing.
[0026] See Figure 1 - Figure 2 , in order to accurately obtain the hydrogen evolution amount, the test device for the novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model further includes a detection mechanism for detecting the amount of hydrogen collected in the hydrogen collection mechanism; among them, the detection mechanism includes an acid-base burette 1 installed on the housing 4, the lower end of the acid-base burette 1 is communicated with the lower orifice diameter of the funnel 2, and a liquid column is sucked in the acid-base burette 1.
[0027] The test device for the new discharge hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model is to solve the problem that the metal sample 7 to be tested will move during use. Therefore, the metal sample 7 to be tested is fixed by the sealing ring 8 and the base 6, and the sealing ring 8 can seal between the metal sample 7 to be tested and the fixing hole at the bottom of the housing 4, so as to better prevent the leakage of the electrolyte. In addition, in order to better collect the hydrogen generated during the discharge of the metal anode, the test device for the new discharge hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model uses the funnel 2 to be reversely covered on the four supports 11 inside the housing 4, and connects the acid-base burette 1 to the neck of the funnel 2 after passing through the foam board. By observing the reduction amount of the liquid column in the acid-base burette 1, the hydrogen evolution amount can be calculated. That is, the test device for the new discharge hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model can calculate the anode utilization rate by weighing the mass of the metal sample before and after the test, and can also indirectly calculate the weight loss of the metal particles falling off according to the discharge hydrogen evolution amount. In addition, the test device for the new discharge hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model is simple to manufacture, low in price, and high in economic benefits.
[0028] See Figure 1 - Figure 2 The housing 4 is a cuboid and is made of a heat-dissipating material. The size of the housing 4 is 115mm x 115mm x 120mm.
[0029] See Figure 1 - Figure 2 The specification of the funnel 2 is that the tube length is 75mm, the upper diameter is φ75mm, and the lower diameter is φ7.5mm.
[0030] See Figure 1 - Figure 2 The specification of the acid-base burette 1 is 50ml.
[0031] See Figure 1 - Figure 2 The sealing ring 8 is made of nylon material.
[0032] See Figure 1 - Figure 2 The electrolyte is a neutral aqueous solution of sodium chloride.
[0033] See Figure 1 - Figure 2 The usage method of the test device for the new discharge hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model is as follows:
[0034] When using the test device for novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model, it is assembled in the order of the housing 4 - the sealing ring 8 - the metal sample 7 to be tested - the base 6 from top to bottom and fixed with screws. Among them, the wire 10 passes through the middle through-hole of the base 6 and is connected to the metal sample 7 to be tested, serving as the anode; the acid-base burette 1 is inverted and passes through the foam board to be connected to the neck of the funnel 2; then four supports 11 are installed inside the housing 4, and a liquid column is sucked up with a suction balloon; then the platinum wire electrode 10 passes through the foam board and is connected to the electrolyte, serving as the cathode; the amount of hydrogen gas generated during the discharge of the metal sample 7 to be tested is reflected by the reduction of the liquid column on the acid-base burette 1. Since the housing 4 has a large capacity, a large amount of electrolyte can be filled, so the stability of the electrolyte environment during the discharge of the metal sample 7 to be tested can be ensured, thus eliminating the need to repeatedly replace the electrolyte. And the funnel 2 is reversely covered on the support 11 so that the electrolyte can enter the inside of the funnel 2 to contact the metal sample 7 to be tested, allowing the dissolved magnesium ions and the generated hydroxide ions to escape, ensuring the stable progress of the magnesium anode discharge test.
[0035] See Figure 1 - Figure 2 , the working principle of the test device for novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model is as follows:
[0036] When using the test device for novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model, hydrogen gas will be evolved on the surface of the metal sample 7 to be tested during discharge, and the amount of hydrogen gas evolved can be measured by the water displacement method. Since the mass of hydrogen gas is very light, by reversely covering the funnel 2 on the support 11, the electrolyte can enter the inside of the funnel 2 to contact the metal sample 7 to be tested, allowing the dissolved magnesium ions and the generated hydroxide ions to escape, ensuring the stable progress of the magnesium anode discharge test; the acid-base burette 1 is connected to the neck of the funnel 2, and the amount of hydrogen gas generated during the discharge of the metal to be tested is reflected by the reduction of the liquid column on the acid-base burette 1. By weighing the metal sample 7 to be tested before and after the test and through relevant calculations, the anode utilization rate can be obtained, and the weight loss due to the shedding of metal particles can be calculated based on the weight loss of hydrogen evolution during discharge. The structure of the embedded sealing ring 8 is adopted to seal the metal sample 7 to be tested with the housing 4, and the metal sample to be tested and the base 6 are fixed with screws, thereby further solving the problem of the movement of the metal sample 7 during the reaction.
[0037] The design of the test device for novel hydrogen evolution and anode utilization rate of the magnesium anode material of the present utility model can effectively prevent water and carbon dioxide in the air from entering the inside of the device. At the same time, a material with good thermal conductivity is used for the housing 4, which can increase the heat dissipation rate, make the magnesium anode discharge work more stable, and through the structure of the embedded sealing ring 8, the base 6, the material to be tested and the housing 4 are closely fitted, further preventing the leakage of the electrolyte.
[0038] The above is a preferred embodiment of the present utility model. However, the embodiments of the present utility model are not limited to the above content. Any other changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included within the protection scope of the present utility model.
Claims
1. A novel test device for discharge hydrogen evolution and anode utilization of magnesium anode material, characterized in that: The invention comprises a base, a shell arranged on the base, and a hydrogen collecting mechanism arranged on the shell for collecting the generated hydrogen, wherein: A platinum wire electrode is disposed at the upper end of the shell, the platinum wire electrode is mounted on the shell, and the lower end of the platinum wire electrode extends into the shell and contacts with the electrolyte in the shell; A fixing hole is provided at the bottom of the shell, the metal sample to be tested is installed in the fixing hole, and a sealing ring is provided between the metal sample to be tested and the fixing hole; The hydrogen collection mechanism includes a support disposed in the shell and a funnel disposed on the support; wherein the support is in multiple groups, and the multiple groups of supports are arranged along the circumferential direction of the fixing hole; the funnel is inverted on the support; It also includes a detection mechanism for detecting the amount of hydrogen collected in the hydrogen collection mechanism; the detection mechanism includes an acid-base burette installed on the shell, the acid-base burette is connected to the funnel, and a liquid column is absorbed in the acid-base burette.
2. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 1, characterized in that: The size of the shell is 115mm x 115mm x 120mm; the funnel has a tube length of 75mm, an upper diameter of φ75mm, and a lower diameter of φ7.5mm; the acid-base burette has a specification of 50-100ml.
3. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 1, characterized in that: There are four groups of supports, and the angle between two adjacent groups of supports is 90 degrees.
4. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 3, characterized in that: The support has a diameter of 5 mm and a height of 5 mm.
5. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 1, characterized in that: The inner diameter of the fixing hole is 14 mm.
6. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 1, characterized in that: The electrolyte is a neutral aqueous solution of sodium chloride.
7. The novel discharge hydrogen evolution and anode utilization testing device of magnesium anode material according to claim 1, characterized in that: A foam plate is arranged on the shell, and the acid-base burette and the platinum wire electrode are both installed on the foam plate.