TW522233B - Mobile sensor device for detecting the activity of electrochemical catalyst electrode - Google Patents

Abstract

A mobile sensor device for detecting the activity of an electrochemical catalyst electrode comprises a sheath frame, a press seat, a waterproof insulation external ring, a sponge soaked with an electrolyte solution, a support, an electric potential signal electrode, and an electric current signal electrode, etc. The invented mobile sensor device is externally connected to a measuring device. The measuring device comprises a frequency analyzer and a constant electric potential device for measuring the a.c. impedance and the cyclic volt-ampere, and uses the operation and analysis of a software to perform the measurement and analysis of the activity of an electrochemical catalyst electrode.

Description

522233 V. Description of the invention (1) The present invention relates to a kind of measurable contact electrode, and a kind of measurable electrochemical catalyst electrode ::: =: installation :, movable probe device. The activity of Sakanobe's size plate = formerly in the electrolysis or electricity mining industry, such as electricity; extremely electrochemical characteristics reflect low overvoltage characteristics: Use: The advantage is to increase production capacity and save energy, plus the plate, its impact has been Gradually replace traditional anodes, especially wrong alloy anodes, and moon catalyst plates are prone to partial or comprehensive deterioration during use, which gradually affects the quality. In order to improve process quality stability and the presence of electrode plates, it has accurate and reliable detection. Technology to master the electrochemical catalyst plate °-generally very useful for electrochemical catalyst & two: from the product quality or visual inspection to judge the electrode plate = 2 who cut the predicted amount of plate into a slice It is placed in a measuring tank to obtain its catalytic activity, but the above method cannot know the distribution of the entire catalytic plate activity, so it still needs to be improved. In addition, the electrochemical catalyst plate has a reversible surface due to the special oxide on the surface. The electrochemical catalyst characteristics of the reaction can be used to judge the electrode's electrochemical activity. However, in practical applications, especially for real-size electrodes, the biggest problem with electrochemical technology measurement is the problem of electrode settings. The right side is used to test the activity of the catalyst electrode. distributed. There are 4l2. The present invention provides a movable head device for measuring the activity of an electrochemical catalyst electrode plate, which can accurately measure the live energy directly on the electrochemical catalyst electrode plate and can measure different positions. Parts, easy to use, can get

522233 V. Description of the invention (2): Sub- # of media plate activity, and control of real electrode. In addition, the measurement of the present invention can save several simultaneous use, which can greatly reduce the cost of electrochemical invention. '... Using the anode head of the electrochemical catalyst electrode plate :: the characteristics of the reversible redox reaction of the medium', providing a kind of mobile type Engaged 2 is used to measure the electrochemical characteristics on the electrode plate to evaluate the changes in catalyst characteristics during the use of the electric two J process. The movable probe device: electrochemical reaction, position measurement, electrochemical AC impedance measurement, precise measurement area limitation, and measurement position can be selected at will. The basic structure of a general electrochemical catalyst electrode plate, as shown in Figure 1, is covered with an electrochemical catalyst metal oxide on a corrosion-resistant and conductive stable metal substrate (generally titanium), of which 100 Represents a stable " gold substrate, and 120 represents a catalytic metal-based oxide. The special oxides on the surface have the characteristics of electrocatalysts catalyzing the anode because of their reversible redox reaction (〇ER). w According to the present invention, a live probe device for measuring the activity of an electrochemical catalyst electrode plate includes a sleeve frame; a pressing seat, outside the sleeve frame, the upper part of the frame and the pressing seat are connected by a spring ; A water-blocking insulating outer ring, which is in the shape of a hollow ring, is connected to the bottom of the frame, and the inner diameter of the insulating outer ring is the same as the inner diameter of the frame, and the outer diameter is greater than the outer diameter of the frame; Impregnated electrolyte fluid = foam, which fills the hollow part of the insulating outer ring; a support part with a talent ring and a sliding holder, wherein the retaining ring is located above the pressing seat to = on the sliding rail frame ; A potential signal electrode, with a potential signal electrode ^

522233 V. Description of the invention (3) and a potential signal line, the potential signal electrode is located inside the impregnated electrolyte, and the potential signal line is externally connected to a measuring instrument; and a = cotton, where the In the electrical frame, the potential signal electrode body surrounds the electrode electrode and is located at the sleeve connection. Among them, the thunder 呷 觫 φ 3> foam electrolyte foam core: The wire electrode is also connected to the measuring instrument. Tian μ measuring activity of the active probe device on the electrode plate to measure the activity of the electrochemical catalyst electrode plate f = electrochemical catalyst plate, the electrochemical characteristics of the surface will be connected to the measuring instrument = And the current signal electrode is detected through the ::: line to the board's activity. The electrochemical catalyst electrode used in the above measurement to measure the activity of the electrode plate of the electrochemical catalyst uses solid-state electricity. =; = At the center of the head axis of the hair. The current signal is: the probe material. The current signal electrode is uniformly distributed around the measurement area. Desensitize the signal impregnation: between the middle electrode of the movable probe device with active electrode plate and between the signal electrode and the gate pole of the current signal electrode, the cotton is acid and alkali resistant Sex, for three 1 ά H. The electrolytic solution suitable for the present invention is made of acid gel. The electrolyte provides a reaction, and = the viscosity is not easy to lose, and the contact area with the electrode is maintained. The above electrolytic solution is not limited to the use of rhyme, and can be selected according to different reaction types. Page 6 0178-71J7TWF; 90024; Phoebe.ptd 522233 V. Description of the invention (4) Acid electrolyte. For electrode 2, the water-blocking insulating outer ring is a rubber insulating gasket, which is used to limit the projection range of the receiving and output signals between the electrode and the electrode plate, and the rubber gasket ^ ^ ^ prevents the electrolyte from diffusing outward, In addition, the rubber gasket is an elastic shell, which is protected from contact damage. Pole 22 This frame is used to accommodate the potential signal electrode and current signal. Electrical insulation: Electric foam :: foam and water blocking insulation outer ring, the frame is made of ^. In addition, the frame is also provided to supplement the electrolysis. Liquid guide hole. The water-insulated base is completely covered on the frame and is connected to the resistance pole thermal pad at the bottom. The combination of gravity and air pressure control strengthens the probe to closely contact with the pole plate and its periphery. Measure the live M s = side and sigh with a scale for test 1 positioning. And the whole is electrically set =-: = several sets are set on the -sliding rail, and it is also connected to: 5 :: active probe device of cyclic electrode plate and cyclic voltammetry 'and implemented through operation and analysis software: 1 The electrode rails used in this disassembly are subject to the external frequency, and the wires are isolated to prevent the flow of the electrode. Ϊ́: ϊ: Say that the measuring plate wire is black. The wire is k color. The reference electrode lead is. In addition, according to the present invention, the activity of the electrochemical catalyst plate is measured by the above-mentioned measuring wind type probe device, as shown in FIG. 6. First, the steps of performing the electrochemical catalyst electrode cloth are as follows: 'After positioning the probe device and rail bracket for measuring activity', "locate the inside point", move the probe to the position of the measurement point. Set page 7 0178-7117IW; 90024; Phoebe.ptd 522233 Description of the invention (5) ίΞϊί! ㈣ 'Then supplement the electrolyte to make the potential electrode and current electrode analysis cell electrochemical characteristics *, the obtained data is Points' can be used to make an activity distribution map. In the above steps, the measurement of the electrification ;: 匕 后 ’彳 changes the position of the probe to other predicted quantities and then repeats the :: j: person to obtain the activity distribution of the entire plate. In addition, in addition to the active probe device of the m-electrode plate of the present invention, in addition to the above alone = Bu: as shown in Figure 12, several probes can be set up on a single frame for simultaneous measurement of different positions, It can greatly save the time for measuring and setting t continuous size plates. Next, please refer to Figs. 2 to 5 to show the probe according to the present invention. Figure 2 shows the electrode plate (dsa), the actual electron transfer resistance is reduced, and thus the electrochemical reaction is reduced. In the case where = 0 is the anode, it is low. Figure 3 shows the relationship between the cyclic voltammetry of the current on the plate and the potential. When the overpotential of the catalyst chemical reaction rises, as shown in curve B, and curve two; J can be a normal plate. In Figure 4, the overpotential of the same constant current OER reaction rises when the force is applied during use. As shown in these 5A and 5B diagrams, the electrochemical catalyst plate activity can also be judged by the AC resistance °. When the degradation of the electrode reduces the catalyst characteristics, the electrochemical crossover 2: rises, as shown in Figure 5B, the value of the X axis increases to about 135. Conversely, when the activity of the second plate is normal, as shown in Figure 5A, where The value of the x-axis is below the field °. In the present invention, the above data analysis is used to measure the activity of the electrochemical catalyst plate. In order to make the above-mentioned objects, features and advantages of the present invention more understandable,

Wen special mentions the best practice:, also examples, and the accompanying drawings, for detailed explanation, as shown in the figure. Brief description Figure 1 shows the display belt. Figure 2 shows the basic structure of the Z chemical catalyst plate. Figure 3 is a graph showing the overpotential of the S electrochemical catalyst plate. Figure 4 is a graph showing the cyclic voltammetry of the electrochemical catalyst plate. Department diagram. 5. The relationship between the potential of the nonelectrochemical catalyst plate and the reaction time. '、 The electrochemical AC impedance chart showing the electrochemical catalyst electrode plate. Figure 6 shows the figure + Figure 7 shows the operation steps of the electrochemical catalyst electrode plate. The relationship between the accurate limitation of the measurement area and the AC impedance value. Figure 8—Plane h. 4 The position of the measurement of the full-scale electrochemical characteristics of Example 2 Example 9 The deer-^ No. 1 (1 Same as ^. ,, 3D perspective view of the cyclic voltammetric overpotential of Example 2) 11 T is a 3D perspective view showing the AC impedance resistance of Example 2. The type probe = shows a schematic diagram of a live second-gorge exhibition for measuring the activity of an electrochemical catalyst plate of the present invention. Learn the catalytic electrode plate activity • Schematic diagram of the hk head device.

522233 V. Description of the invention (7) '20' stands for the frame, on the 21st generation thatched cage ... It is a hollow ring-shaped water block: outside the edge 2, seat f, at the bottom of the frame, Η, 16 represent impregnation Electrolytic, wide, wide, and off-surface%, the hollow part of the hollow ring connected to the outer ring of the frame 20, the foam of the buckle 1 / of the 'filled the frame and insulation ...-sliding: frame 3 = medium amount Take ^ to buckle 3 of the slide rail, and 丨 〇 矣 一 ”孑 is placed on the upper part of α Hai repeatedly press seat 2 2，12 where the potential and electricity are% green electrodes, 12A is the local current signal line, With the above device: Figure 2/2 pole J: externally connected to the measuring instrument 40. After repeated steps% h ^ abnormal electrochemical catalyst plate activity is performed, it will be tested; L electrochemical catalyst plate After locating the electrode lead at the measurement point, place the probe; ::;: =: =, connect the electrical pressure to make the probe device tightly with the electrode plate, and apply the gravity-type potential electrode, current electrode, and electrode plate shape: of; Liquid to make the entire electrochemical characteristic measurement. V When the reference electrode is generated after the current is generated, the measuring probe device is placed on the electrode plate 50, and the fan line is also connected to the measuring instrument 40. That is to say, Erxue got right; 1 handle! Position electrode, current electrode and plate. To measure and ϊ, apply a current signal to the plate. Tanaka is connected to the "f potential ^ tiger" when measuring on the plate. . Pay special attention to accuracy in order to be limited. The range of the response signal area must be limited to W days: the degree of electrochemical AC impedance and 0ER potential. "疋", the gravity applied during measurement 1 must prevent the water-insulating outer ring, and must be confined within the water-blocking absolute resistance. Measured with the probe device for measuring activity of the present invention. Bu = χ domain. Page 10 0178-7117TW; 90024; Phoebe.ptd 522233

And the display of the AC impedance resistance and its data are shown in Table 1 = 不 N = 1 The area is accurate and limited to affect the AC impedance value in Figure 7 of the curve 'far Nyquist plot; the distance between the two low points & and a lower value of the younger means solution resistance &. Comparative Example 1 The same electrode plate as the conventional example was cut, and only the front surface of the electrode plate was covered with an adhesive film to expose the same measurement position and the same measurement area, and then placed in the measurement of a general electrolyte-containing, potential electrode, and current electrode. L and R were measured in the groove, and the data are shown in Table 1 and curve i in Fig. 7. t s Comparative Example 2 The same electrode plate as in the example was measured at the same measurement position, the same measurement electrode, and the measurement slot of the current electrode. Table 1 and curve 2 in FIG. 7. ’The electrode is completely shielded with a plastic film, and the exposed area is placed in the general electrolyte containing, Rct and Rs of the electric test’ The data is shown in Table 1

Rct (ohm-cm2) Rs (ohm-cm2) Example 1 7.1 5.3 Comparative Example 1 3.5 2.7 Comparative Example 2 7.1 2.7 From Table 1, it can be found that only the exposed part is completely shielded in Example 丨 and Comparative Example 2

0178-7117TWF; 90024; Phoebe.ptd Page 11 522233 V. Description of the invention (9) —— _ OER electrochemical AC impedance measurement phase I of the measurement area; I! * ^ ^ ^ ^ ^ ^^ ^ ^ ^ ® ^ 5 Take a 90cm X 80cm electrochemical catalyst electrode with a movable probe device for measuring the activity of an electrochemical catalyst electrode plate. It is easy to set up, measure the characteristics, and perform the steps and examples. At the same time, the measurement position is as shown in Figure 8.

The diagrams prepared by the electrochemical AC impedance are similar to those in Figure 3 and Figures 5A and 5B, and then the overall data is plotted into a three-dimensional view, shown in Figure I and Figure 10. In general, the change in activity is observed visually using = very, and the activity distribution of the catalyst plate is passed through to achieve the invention. … Solid Electrochemical Activity = Real: It can be found that the present invention can achieve the function of measuring the denier on the electrode plate, and can perform the electrochemical characteristics on a real-sized electrode plate. The dicing block is placed in a measuring slot for opening and unfolding, and grasps the active status of the entire plate and obtains the full status of == ::: == in order to maintain the smoothness of the work of the spear king. Although the present invention has been used to limit the present invention with ease, any two: the second is the same as above, but it is not intended to be used within the scope, and it can be done without departing from the scope of the spirit of the invention. Application: = movement and retouching, so the protection of Jiaming patent in the present invention shall prevail. Page 12 0178-7117TWF; 90024; Phoebe.ptd

Claims (1)

522233 6. Scope of patent application Applicable chemistry :::: Medium = movable probe device, one press seat, outside the frame; a water-resistant insulating outer ring, which is hollow and the inner diameter of the insulating outer ring = the The outer diameter of the outer ring at the bottom of the frame is larger than the outer diameter of the frame; it is the same, and the insulation-impregnated foam Γ fills the absolute support portion, I right 4 ^ 豕 the hollow part of the outer mother ; Located on the press base Qiu 4 ~ 1 4 rail wood, where the buckle pressure < the upper part to buckle to the sliding rail frame; potential alum electrode, with a potential signal electrode line, the potential signal thunder Do you think that the external coffee body and the potential signal body are directly located in the casing? And that the potential signal electrode is connected to a measuring instrument; The current alum electrode is located in the body of the casing and connected to the foam impregnated with the electrolyte, and is also externally connected to the measuring instrument. 2. Measurement as described in item 丨 of the scope of patent application • Active movable probe device, where the upper part of the casing: catalyst = spring connection. | Xingjun Zhizuo 3 · The movable type probe device for measuring electrification = sex as described in item 1 of the scope of patent application, wherein the water blocking insulation outer ring is an elastic material 4 · as described in the scope of patent application The measurement of electrochemical catalyst plates Page 13 0178-7117TWF; 90024; Phoebe.ptd / ,, patent application scope --- ^ ------ tongue-type movable probe w 5 · 如 申 向 二 硕 旋The 忒 elastic material is rubber. Active activity = Measure the electrochemical catalyst plate as described in item 1 of the range. Type plate head device, wherein the periphery of the pressing seat is also provided with a measuring electrochemical catalyst electrode plate moving rail bracket as described in item 1 of the active I2 = f profit range. Head device, wherein the retaining ring of the supporting part is connected to the measuring electrochemical catalyst electrode plate δ-type head described in item 1 of the range ii ϊ f of the active activity 7 wherein the electrolyte is an acid gel . The active electrochemical range described in item 7 of the electrochemical catalyst electrode sheet is prepared as a two-wood device, where the strong acid solution gel is composed of an acid solution and a paste chemistry. The active method is applicable to the catalyst electrode plate of Φ d. The method includes: weekly for a electricity a • connecting the electrode of the electrochemical touch probe α as described in Example 1 to the electrode lead wire; Electrochemically activate the activity of the catalyst plate b. Move the movable electrode that measures the activity of the electrochemical plate & φ to the position of the measurement point, and apply gravity to move the tester to the 'electrochemical The catalyst electrode plate is in close contact], and the C. probe is installed and C. The electrolyte is supplemented to make the entire measuring active probe device into a battery; d. The electrochemical characteristics are measured. 0178-7117TWF; 90024; Phoebe.ptd Page 14