CN104372374A - Cathode catalyst and cathode structure of membrane electrode electrolysis ozone generator - Google Patents
Cathode catalyst and cathode structure of membrane electrode electrolysis ozone generator Download PDFInfo
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- CN104372374A CN104372374A CN201410671508.4A CN201410671508A CN104372374A CN 104372374 A CN104372374 A CN 104372374A CN 201410671508 A CN201410671508 A CN 201410671508A CN 104372374 A CN104372374 A CN 104372374A
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Abstract
The invention discloses a cathode catalyst and a cathode structure of a membrane electrode electrolysis ozone generator. Iron alloy containing Mo, Cr and Ni is used as the cathode catalyst, and furthermore, the iron alloy is directly used as the cathode structure of the membrane electrode after being manufactured into an iron alloy screen mesh. Compared with the prior art, acid-proof and cheap iron alloy serves as the catalyst as well as a microporous current-carrying plate, the process of uniting the cathode catalyst and the microporous current-carrying plate as one is a great innovation of the field technology whether from texture or from structure, the cathode catalyst has obvious advantage that the cathode catalysis effect is good, the cathode structure is simple, the cost is greatly lowered, and the economic benefit is obvious.
Description
Technical field
The present invention relates to a kind of cathod catalyst and cathode construction of membrane electrode electrolysis ozone generator, belong to electrochemical field.
Background technology
Ozone application more and more enters field widely, and membrane electrode electrolysis ozone generator adopts pure water to make raw material, and brine electrolysis generates hydrogen, oxygen and ozone.Because raw material is pure water, so electrolysis resultant is pure hydrogen, oxygen and ozone, can not have the objectionable impurities of such as oxynitride class, this peculiar advantage of membrane electrode electrolysis ozone generator is paid attention to, and its Application Areas strengthens gradually.
The core of electrolysis ozone generator is membrane electrode, and the structure of membrane electrode comprises: ion-exchange membrane 1, the cathod catalyst 2 being placed in ion-exchange membrane 1 both sides respectively, anode catalyst 3 and micropore conducting plates 4(have support catalyst or the function as support of the catalyst).Cathod catalyst 2 and micropore conducting plates 4 form cathode construction, and anode catalyst 3 and micropore conducting plates 4 form anode construction (see Fig. 1).
The cathod catalyst of existing electrolysis ozone generator membrane electrode adopts platinum, palladium, rhodium precious metal simple substance usually, and micropore conducting plates adopts titanium microwell plate usually, and cathod catalyst and titanium microwell plate form cathode construction, have kinds of processes making method in prior art:
Such as one: side platinum, palladium, rhodium precious metal simple substance being plated to titanium microwell plate with the method for electroless plating, form membrane electrode cathode structure.
Such as two: platinum, palladium, rhodium precious metal chemical complex in the side of titanium microwell plate, form membrane electrode cathode structure with sintering method sintering.
Such as three: by charcoal absorption platinum, palladium, rhodium, then be rolled into cathod catalyst independence diaphragm with tetrafluoroethylene bonding active carbon powder, coordinate with titanium microwell plate and constituting membrane electrode cathode construction is installed.
The preparation process of cathod catalyst independence diaphragm is as follows: the adsorptive power of Activation Activity carbon molecule, and------compound is reduced out platinum monometallic---making the catalyst fines (carbon carries platinum) of carbon supported noble metal platinum---is rolled into diaphragm as caking agent by activated carbon powder adhesion by polytetrafluoro emulsion to the compound of activated carbon molecular adsorption noble metal platinum.
Cathod catalyst in above-described cathode construction and micropore conducting plates are two kinds of different materials, are by processing methodes such as chemistry, electrochemistry, physics, make the two be bonded cathode construction.
The shortcoming of the above several cathode construction has two aspects: the cathod catalyst platinum one, usually adopted, palladium, rhodium precious metal are expensive; Two, manufacturing process complicated, produce in not easily guaranteed quality.The shortcoming of these two aspects causes membrane electrode cost to remain high, and has a strong impact on the commercialization process of membrane electrode electrolysis ozone generator.
Summary of the invention
Object of the present invention is intended to overcome the shortcoming existed in prior art, provides a kind of structure simple, the cathod catalyst of the membrane electrode electrolysis ozone generator of inexpensive and cathode construction.
Technical scheme of the present invention is: a kind of cathod catalyst of membrane electrode electrolysis ozone generator, and feature is, cathod catalyst is the iron alloy containing Mo, Cr, Ni.
Further, the alloying constituent content of described cathod catalyst is:
Mo 2-3%, Cr 16-18%, Ni 10-14%, S≤0.03%, Si≤1%, Mn≤2%, C≤0.03%, P≤0.035%, all the other are Fe.
A kind of membrane electrode electrolysis ozone generator cathode construction, feature is, described cathode construction is the iron alloy net be made up of the iron alloy containing Mo, Cr, Ni, and this iron alloy mesh order number is that 300-600 order is best.
Membrane electrode cathode catalyzer of the present invention adopts the iron alloy containing Mo, Cr, Ni, and it breaches the routine techniques of existing electrolysis ozone generator membrane electrode cathode catalyzer.Carried out long running experiment to the membrane electrode electrolysis ozone generator adopting the iron alloy containing Mo, Cr, Ni as cathod catalyst, result proves: the iron alloy catalyst effect containing Mo, Cr, Ni is equal to the catalytic effect of platinum, palladium, rhodium precious metal cathod catalyst.
The present invention adopts the iron alloy containing Mo, Cr, Ni as cathod catalyst, further, this iron alloy is made the cathode construction directly as membrane electrode after iron alloy silk screen, namely, the cathode construction of electrolysis ozone generator membrane electrode of the present invention is exactly the acidproof iron alloy net of one deck, and this iron alloy net is cathod catalyst, plays the effect of catalyzer, this iron alloy net act as again micropore conducting plates simultaneously, can water-permeable and air permeable.
Compared with the prior art, the present invention have chosen acidproof, the cheap iron alloy containing Mo, Cr, Ni, adopt this iron alloy net directly as the cathode construction of electrolysis ozone generator membrane electrode, cathod catalyst and micropore conducting plates are united two into one, and are all that one of art technology is innovated greatly material or in structure.Its remarkable advantage is that cathode catalysis is effective, and cathode construction is very simple, and cost significantly reduces, total cost be only existing platinum, palladium, rhodium cathod catalyst total cost 1/tens, economic benefit is very remarkable.And obviously, the acidproof iron alloy silk screen of one deck is compared with the membrane electrode cathode structure of prior art, and its structure is simple, and intensity is higher, not easily breaks, and there is not catalyzer obscission, more withstand voltage, ventilative, good water permeability.
The present invention greatly facilitates the industrialization process of membrane electrode electrolysis ozone generator, significant to applying of membrane electrode electrolysis ozone generator.
Below in conjunction with drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
The film electrode structure schematic diagram of the electrolysis ozone generator of Fig. 1---prior art;
The film electrode structure schematic diagram of Fig. 2---electrolysis ozone generator of the present invention.
The explanation of accompanying drawing drawing
1 ion-exchange membrane, 2 cathod catalysts, 3 anode catalysts, 4 micropore conducting platess.
Embodiment
Embodiment 1, the cathod catalyst of membrane electrode electrolysis ozone generator of the present invention is the iron alloy containing Mo, Cr, Ni, and the component content of its iron alloy is:
Mo 2-2.5% Cr 16-16.5% Ni 10-12% S≤0.02% Si≤0.5% Mn≤1% C≤0.02% P≤0.02% all the other be Fe.
Embodiment 2, the cathod catalyst of membrane electrode electrolysis ozone generator of the present invention is the iron alloy containing Mo, Cr, Ni, and the component content of its iron alloy is:
Mo 2.5-3% Cr 16.5-17% Ni 11-13% S≤0.03% Si≤1% Mn≤1.5% C≤0.03% P≤0.03% all the other be Fe.
Embodiment 3, the cathod catalyst of membrane electrode electrolysis ozone generator of the present invention is the iron alloy containing Mo, Cr, Ni, and the component content of its iron alloy is:
Mo 2-3% Cr 16-18% Ni 10-14% S≤0.03% Si≤1% Mn≤2% C≤0.03% P≤0.035% all the other be Fe.
Shown in figure 2, by the film electrode structure of above-mentioned iron alloy as the electrolysis ozone generator of cathod catalyst, be the iron alloy silk screen 2(be woven into by the iron alloy silk of above-described embodiment be also cathod catalyst 2), do not need through other chemistry any, electrochemical reprocessing, cut out to the shape needed for membrane electrode, then the direct side being overlayed on ion-exchange membrane 1.In enforcement, the mesh order number of iron alloy net is best at 300-600 order.
Claims (4)
1. a cathod catalyst for membrane electrode electrolysis ozone generator, is characterized in that, cathod catalyst is the iron alloy containing Mo, Cr, Ni.
2. the cathod catalyst of membrane electrode electrolysis ozone generator according to claim 1, is characterized in that, the alloying constituent content of described cathod catalyst is:
Mo 2-3%, Cr 16-18%, Ni 10-14%, S≤0.03%, Si≤1%, Mn≤2%, C≤0.03%, P≤0.035%, all the other are Fe.
3. a membrane electrode electrolysis ozone generator cathode construction, is characterized in that, described cathode construction is the iron alloy net be made up of the iron alloy containing Mo, Cr, Ni.
4. membrane electrode electrolysis ozone generator cathode construction according to claim 3, is characterized in that, described iron alloy mesh order number is 300-600 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671508.4A CN104372374A (en) | 2014-07-21 | 2014-11-21 | Cathode catalyst and cathode structure of membrane electrode electrolysis ozone generator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014103468206 | 2014-07-21 | ||
| CN201410346820.6A CN104073836A (en) | 2014-07-21 | 2014-07-21 | Cathode catalyst and cathode structure for membrane electrode electrolysis ozonator |
| CN201410671508.4A CN104372374A (en) | 2014-07-21 | 2014-11-21 | Cathode catalyst and cathode structure of membrane electrode electrolysis ozone generator |
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| CN104372374A true CN104372374A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410346820.6A Withdrawn CN104073836A (en) | 2014-07-21 | 2014-07-21 | Cathode catalyst and cathode structure for membrane electrode electrolysis ozonator |
| CN201410671508.4A Pending CN104372374A (en) | 2014-07-21 | 2014-11-21 | Cathode catalyst and cathode structure of membrane electrode electrolysis ozone generator |
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| CN201410346820.6A Withdrawn CN104073836A (en) | 2014-07-21 | 2014-07-21 | Cathode catalyst and cathode structure for membrane electrode electrolysis ozonator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411331A (en) * | 2018-02-11 | 2018-08-17 | 中氧科技（广州）有限公司 | A kind of membrane electrode assembly and preparation method thereof of low-voltage electrolysis ozone generator |
| CN108977828A (en) * | 2018-10-19 | 2018-12-11 | 胡松 | A kind of membrane electrode electrolysis ozone generator and its preparation process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104687A (en) * | 1993-11-19 | 1995-07-05 | 中国科学院化工冶金研究所 | Active low-hydrogen over-potential cathode and its manufacture |
| JP2000081498A (en) * | 1998-06-23 | 2000-03-21 | Toshiba Corp | Method and device for chemical decontaminating for structural part of radiation handling facility |
| EP1340841A1 (en) * | 2002-02-06 | 2003-09-03 | Luxon Energy Devices Corporation | Electrolytic cell for ozone generation |
| JP2008266717A (en) * | 2007-04-19 | 2008-11-06 | Kobe Steel Ltd | Electrode for ozone generation |
| CN102719846A (en) * | 2011-03-31 | 2012-10-10 | 北京化工大学 | Alkaline water electrolysis Ni-based three-dimensional network gradient alloy hydrogen evolution cathode |
| WO2012156668A1 (en) * | 2011-05-17 | 2012-11-22 | A-Zone Technologies Limited | Electrode assembly and an electrochemical cell comprising the same |
| CN102899681A (en) * | 2012-10-26 | 2013-01-30 | 华侨大学 | Porous nickel composite electrode, electroplating solution and preparation method of porous nickel composite electrode |
-
2014
- 2014-07-21 CN CN201410346820.6A patent/CN104073836A/en not_active Withdrawn
- 2014-11-21 CN CN201410671508.4A patent/CN104372374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104687A (en) * | 1993-11-19 | 1995-07-05 | 中国科学院化工冶金研究所 | Active low-hydrogen over-potential cathode and its manufacture |
| JP2000081498A (en) * | 1998-06-23 | 2000-03-21 | Toshiba Corp | Method and device for chemical decontaminating for structural part of radiation handling facility |
| EP1340841A1 (en) * | 2002-02-06 | 2003-09-03 | Luxon Energy Devices Corporation | Electrolytic cell for ozone generation |
| JP2008266717A (en) * | 2007-04-19 | 2008-11-06 | Kobe Steel Ltd | Electrode for ozone generation |
| CN102719846A (en) * | 2011-03-31 | 2012-10-10 | 北京化工大学 | Alkaline water electrolysis Ni-based three-dimensional network gradient alloy hydrogen evolution cathode |
| WO2012156668A1 (en) * | 2011-05-17 | 2012-11-22 | A-Zone Technologies Limited | Electrode assembly and an electrochemical cell comprising the same |
| CN102899681A (en) * | 2012-10-26 | 2013-01-30 | 华侨大学 | Porous nickel composite electrode, electroplating solution and preparation method of porous nickel composite electrode |
Non-Patent Citations (2)
| Title |
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| 胡伟康 等，: ""非晶态Ni-Mo-Fe合金作电解水析氢反应电极"", 《功能材料》 * |
| 韩庆 等，: ""镍合金用作电解水析氢阴极的发展现状"", 《中国有色金属学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411331A (en) * | 2018-02-11 | 2018-08-17 | 中氧科技（广州）有限公司 | A kind of membrane electrode assembly and preparation method thereof of low-voltage electrolysis ozone generator |
| CN108977828A (en) * | 2018-10-19 | 2018-12-11 | 胡松 | A kind of membrane electrode electrolysis ozone generator and its preparation process |
| CN108977828B (en) * | 2018-10-19 | 2023-11-03 | 胡松 | Membrane electrode electrolytic ozone generator and preparation process thereof |
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| Publication number | Publication date |
|---|---|
| CN104073836A (en) | 2014-10-01 |
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