CN105990043A - Preparation method of efficient porous thin film electrode used for capacitive deionization - Google Patents
Preparation method of efficient porous thin film electrode used for capacitive deionization Download PDFInfo
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- CN105990043A CN105990043A CN201510092463.XA CN201510092463A CN105990043A CN 105990043 A CN105990043 A CN 105990043A CN 201510092463 A CN201510092463 A CN 201510092463A CN 105990043 A CN105990043 A CN 105990043A
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Abstract
The invention discloses a preparation method of an efficient porous thin film electrode used for capacitive deionization. The preparation method comprises the steps of: mixing a bonder with charring materials having a high specific surface area to obtain a highly-dispersed conductive slurry; painting the conductive slurry on a conductive substrate evenly; and drying the conductive substrate to obtain the efficient porous thin film electrode which can be used for capacitive deionization. The efficient porous thin film electrode provided by the invention has the advantages of being simple in preparation technology, low in cost, green and environmentally friendly, being capable of batched production, having controllable size of the obtained efficient porous thin film electrode, being high in ion adsorption efficiency when applied to capacitive deionization equipment, low in resistance, low in power consumption, high in stability, fast in effect speed, being able to be recycled and reused, and the like.
Description
Technical field
The invention belongs to the preparing technical field of capacitive deionization electrode, be specifically related to the preparation method of a kind of high-efficiency multiple membrane electrode.
Background technology
Capacitive deionization technology (Capacitive Deionization, CDI) is a kind of new type water purification techniques of rising in recent years.Its operation principle, based on electrochemical double-layer capacitor theory, makes the charged particle in water towards opposite polarity electrode transfer mainly by two interpolar electric field force effects, by the absorption of electrode surface, concentrates and be enriched with, thus realize water purification.When electrode surface absorption reaches saturated, remove extra electric field or by electrode antipole, the ion of electrode surface absorption comes back in solution, it is achieved electrode regeneration.For more current main flow waste water advanced purifying technology, CDI technology mainly has: 1) energy consumption is low；2) electrode regeneration process is simple；3) electrode cycle utilization rate is high；4) water quality treatment adjustable extent is wide；5) secondary pollution is few, saves resource；5) advantages such as raw material sources are wide, low cost.Correlation technique is listed in " industry key common technology development guide (2013) " by Ministry of Industry and Information, and the technological progress to promoting recycled water industry has great importance.
The development of capacitive deionization technology and the technical difficult points promoted concentrate on design and the optimization of its electrode material.One preferable CDI electrode has some speciality following: 1) high-specific surface area, in order to accept ionic adsorption to greatest extent；2) high conductivity so that ion can form good electric adsorption desorption conversion with electrode surface；3) rational pore size and network distribution, in order to ion is free to enter and abjection electrode, ensures the peak use rate of material simultaneously；4) good surface wettability, in order to electrode surface and aqueous solution can be fully contacted, it is achieved ion is in the quick exchange at electrode/electrolyte interface.
Summary of the invention
It is an object of the invention to: with reference to preferable CDI electrode material speciality, a kind of method preparing high-efficiency multiple membrane electrode being applied to capacitive deionization.It is high that described method can obtain ionic adsorption efficiency, low in energy consumption, the excellent electrode material of good stability.
The technical solution of the present invention is that it comprises the following steps:
(1) it is the electrically conductive graphite of 85 ~ 99% by mass fraction, conductive black, activated carbon, Graphene, acetylene black and the most any several mixing thereof are the politef of 1 ~ 15% with mass fraction, Kynoar, polyvinyl alcohol, hydroxylated cellulose, chitosan, sodium alginate and the most any several mixing thereof are scattered in water, methanol, ethanol, ethylene glycol, N, in N '-dimethyl Methanamide, N-Methyl pyrrolidone and the most any several mixed solvent, prepares the high dispersive electrocondution slurry that concentration is 1 ~ 100mg/mL；
(2) by curtain coating, silk screen printing, blade coating, extrusion process, electrocondution slurry being coated the titanium plate that thickness is 50 ~ 2000 μm, stainless (steel) wire, graphite paper, activity carbon cloth, in nickel foam conductive substrates；
(3) coated electrode being placed in the drying baker of 30 ~ 200 DEG C drying, drying time is 20 ~ 1440 minutes, and dried thickness of electrode is 50 ~ 2000 μm.
The invention have the advantage that a kind of method providing high-efficiency multiple membrane electrode being applied to capacitive deionization, with porous, electrically conductive material with carbon element as raw material, ensure that the bigger specific surface area of electrode and excellent absorption property, the coating process utilizing industry available obtains large-area membrane electrode, it is achieved thereby that the simple and technology for preparing electrode of continuous uniform.Green high-efficient membrane electrode size prepared by the method is controlled, and high for capacitive deionization equipment intermediate ion adsorption efficiency, resistance is little, low in energy consumption, good stability, and effect speed is fast, repeatable recycling.
Detailed description of the invention
Further illustrate the technical solution of the present invention below in conjunction with specific embodiment, these embodiments are not to be construed as the restriction to technical scheme.
Example 1:
(1) 0.9g electrically conductive graphite and 0.1g politef are scattered in 1000ml N, in N '-dimethyl Methanamide, prepare 1mg/ml conductive carbon pastes；
(2) conductive carbon pastes uses extrusion process coat at 100 the μm stainless steel-based end, after natural drying, obtains carbon pastes gel film；
(3) obtaining thickness after being dried 30 minutes in 200 DEG C of drying baker by gel film is 520 μm, and sheet resistance is 60 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 13 F/g.
Example 2:
(1) 0.85g conductive black and 0.15g polyvinyl alcohol are scattered in 10ml N-Methyl pyrrolidone, prepare 500mg/ml conductive carbon pastes；
(2) conductive carbon pastes is coated in 1000 μm foam nickel base by extrusion process, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 1440 minutes in 160 DEG C of drying baker by gel film is 1100 μm, and sheet resistance is 0.1 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 20 F/g.
Example 3:
(1) 0.88g Graphene and 0.12g chitosan are scattered in 100ml methanol, prepare 10mg/ml conductive carbon pastes；
(2) conductive carbon pastes is coated in 100 μm graphite paper substrates by silk-screen printing technique, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 360 minutes in 100 DEG C of drying baker by gel film is 500 μm, and sheet resistance is 10 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 100 F/g.
Example 4:
(1) 0.95g activated carbon and 0.05g Kynoar are scattered in 20ml ethanol, prepare 50mg/ml conductive carbon pastes；
(2) conductive carbon pastes uses casting technique coat in 1000 μm foam nickel base, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 30 minutes in 200 DEG C of drying baker by gel film is 1500 μm, and sheet resistance is 0.1 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 20 F/g.
Example 5:
(1) 0.92g conductive black is scattered in 400ml water with 0.04g electrically conductive graphite and 0.04g sodium alginate, prepares 2.5mg/ml conductive carbon pastes；
(2) conductive carbon pastes uses doctor blade process coat on 800 μm corrosion resistant plates, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 360 minutes in 80 DEG C of drying baker by gel film is 1200 μm, and sheet resistance is 1 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 5 F/g.
Example 6:
(1) 0.2g acetylene black is scattered in 200ml ethylene glycol with 0.03g Kynoar and 0.12g politef with 0.65g electrically conductive graphite, prepares the conductive carbon pastes that concentration is 5mg/ml；
(2) conductive carbon pastes employing is screen printed onto in 300 μm titanium plate substrates, after natural drying, obtains carbon pastes gel film；
(3) obtaining thickness after being dried 240 minutes in 60 DEG C of drying baker by gel film is 700 μm, and sheet resistance is 40 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 8 F/g.
Example 7:
(1) 0.25g conductive black is scattered in 50ml water with 0.03g Kynoar and 0.07g polyvinyl alcohol with 0.65g electrically conductive graphite, prepares the conductive carbon pastes that concentration is 20mg/ml；
(2) conductive carbon pastes uses casting technique coat on 500 μm porous carbon cloths, after natural drying, obtains carbon pastes gel film；
(3) obtaining thickness after being dried 500 minutes in 180 DEG C of drying baker by gel film is 600 μm, and sheet resistance is 30 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 40 F/g.
Example 8:
(1) 0.93 g conductive black is scattered in 200ml water and 50ml methanol solution with 0.02g polyvinyl alcohol and 0.05g chitosan, prepares the conductive carbon pastes that concentration is 4mg/ml；
(2) conductive carbon pastes is scratched in 100 μm foam nickel base, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 50 minutes in 150 DEG C of drying baker by gel film is 500 μm, and sheet resistance is 3 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 25 F/g.
Example 9:
(1) 0.90g conductive black and 0.10g hydroxylated cellulose are scattered in 5ml ethanol, prepare the conductive carbon pastes that concentration is 200mg/ml；
(2) conductive carbon pastes uses casting technique coat in 50 μm corrosion resistant plate substrates, after natural drying, obtains carbon pastes gel film；
(3) obtaining thickness after being dried 480 minutes in 70 DEG C of drying baker by gel film is 250 μm, and sheet resistance is 2 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 40 F/g.
Example 10:
(1) 0.4g activated carbon is scattered in 250ml N with 0.45g Graphene and 0.15g Kynoar, in N '-dimethyl Methanamide, prepares the conductive carbon pastes that concentration is 4mg/ml；
(2) conductive carbon paste is coated in 500 μm titanium plate substrates by material rotary evaporation technique, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 600 minutes in 30 DEG C of drying baker by gel film is 1000 μm, and sheet resistance is 1 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 45 F/g.
Example 11:
(1) 0.95g Graphene and 0.05g Kynoar are scattered in 100ml N-Methyl pyrrolidone, prepare 10mg/ml conductive carbon pastes；
(2) conductive carbon pastes is coated in 100 μm graphite paper substrates by silk-screen printing technique, after natural drying, obtain carbon pastes gel film；
(3) obtaining thickness after being dried 360 minutes in 40 DEG C of drying baker by gel film is 150 μm, and sheet resistance is 10 Ω/, than the high-efficiency multiple membrane electrode that electric capacity is 150 F/g.
Accompanying drawing explanation
Figure
1
It it is the micro-structure diagram of high-efficiency multiple membrane electrode
Figure
2
It it is the cyclic voltammetry curve figure of high-efficiency multiple membrane electrode
Figure
3
It is the absorption desalted of high-efficiency multiple membrane electrode
-
Desorption curve figure.
Claims (9)
1. the preparation method of the high-efficiency multiple membrane electrode being applied to capacitive deionization, it is characterized in that, described method is to be uniformly coated in conductive substrates by the carbon pastes of high dispersive, is dried the porous film electrode obtaining can apply to capacitive deionization afterwards.
2. the method for claim 1, it is characterised in that the carbon pastes of described high dispersive is obtained by a certain proportion of porous, electrically conductive material with carbon element and binding agent mix homogeneously in a solvent.
3. the method as described in claim 1 and 2, it is characterised in that described porous carbon materials includes electrically conductive graphite, conductive black, activated carbon, Graphene, acetylene black and the most several mix；Described material with carbon element accounts for 85 ~ 99%(wt of total proportion).
4. the method as described in claim 1 and 2, it is characterised in that described binding agent includes politef, Kynoar, polyvinyl alcohol, hydroxylated cellulose, chitosan, sodium alginate and the most any several mixing；The ratio of described binding agent accounts for 1 ~ 15%(wt of total proportion).
5. the method as described in claim 1 and 2, it is characterised in that described solvent includes water, methanol, ethanol, ethylene glycol, N, N '-dimethyl Methanamide, N-Methyl pyrrolidone and the mixing of the most any several solvents, described high dispersive electrocondution slurry concentration is 1 ~ 100mg/mL.
6. the method as described in claim 1 ~ 5, it is characterised in that described conductive substrates includes titanium plate, corrosion resistant plate, graphite paper, porous carbon cloth, nickel foam；Described conductive substrates material thickness is 50 ~ 2000 μm.
7. the method as described in claim 1 ~ 6, it is characterised in that described coating process includes curtain coating, silk screen printing, blade coating, die casting.
8. the method as described in claim 1 ~ 7, it is characterised in that described baking temperature is 30 ~ 200 DEG C, described drying time is 20 ~ 1440 minutes.
9. the method as described in claim 1 ~ 8, it is characterised in that the thickness of described green high-efficient porous carbon membrane electrode is 50 ~ 2000 μm,
Square resistance is 0.01 ~ 1000 Ω/, is 1 ~ 200F/g than electric capacity.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587287A (en) * | 2016-12-19 | 2017-04-26 | 复旦大学 | Seawater purifying device based on paper base material and preparing method of seawater purifying device |
| CN107240435A (en) * | 2017-04-18 | 2017-10-10 | 江苏东昇光伏科技有限公司 | A kind of photovoltaic cell silver paste and preparation method thereof |
| CN107706382A (en) * | 2017-09-27 | 2018-02-16 | 江苏科技大学 | A kind of sheet sodium manganese oxide and preparation method and application |
| CN109384286A (en) * | 2017-08-07 | 2019-02-26 | 常州博碳环保科技有限公司 | It is a kind of can the continuous efficient self-supporting desalination membrane electrode of large area preparation method |
| CN109422260A (en) * | 2017-08-30 | 2019-03-05 | 北京大学 | Method based on active Carbon composites preparation ultra-clean graphene |
| CN109704443A (en) * | 2019-02-26 | 2019-05-03 | 广东工业大学 | A kind of capacitive deionization adsorption electrode and preparation method thereof |
| CN112624269A (en) * | 2019-09-24 | 2021-04-09 | 中国科学院过程工程研究所 | Wastewater treatment device and wastewater treatment method |
| CN113611543A (en) * | 2021-08-13 | 2021-11-05 | 南开大学 | Carbon nanotube-doped chitosan-based activated carbon material, capacitive deionization electrode and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285706A (en) * | 2011-04-24 | 2011-12-21 | 大连理工大学 | Preparation method for integral polyacrylonitrile carbon fiber electrode for desalination |
| CN102417217A (en) * | 2011-08-19 | 2012-04-18 | 中国科学院生态环境研究中心 | Desalination method using graphene like resin composite material as electrode |
-
2015
- 2015-03-02 CN CN201510092463.XA patent/CN105990043A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285706A (en) * | 2011-04-24 | 2011-12-21 | 大连理工大学 | Preparation method for integral polyacrylonitrile carbon fiber electrode for desalination |
| CN102417217A (en) * | 2011-08-19 | 2012-04-18 | 中国科学院生态环境研究中心 | Desalination method using graphene like resin composite material as electrode |
Non-Patent Citations (1)
| Title |
|---|
| WEI HUANG等: "Desalination by capacitive deionization process using nitric acid-modified activated carbon as the electrodes", 《DESALINATION》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106587287B (en) * | 2016-12-19 | 2020-07-03 | 复旦大学 | Seawater purification device based on paper-based material and preparation method thereof |
| CN106587287A (en) * | 2016-12-19 | 2017-04-26 | 复旦大学 | Seawater purifying device based on paper base material and preparing method of seawater purifying device |
| CN107240435A (en) * | 2017-04-18 | 2017-10-10 | 江苏东昇光伏科技有限公司 | A kind of photovoltaic cell silver paste and preparation method thereof |
| CN109384286B (en) * | 2017-08-07 | 2020-10-27 | 常州博碳环保科技有限公司 | Method for preparing continuous large-area efficient self-supporting desalination membrane electrode |
| CN109384286A (en) * | 2017-08-07 | 2019-02-26 | 常州博碳环保科技有限公司 | It is a kind of can the continuous efficient self-supporting desalination membrane electrode of large area preparation method |
| CN109422260A (en) * | 2017-08-30 | 2019-03-05 | 北京大学 | Method based on active Carbon composites preparation ultra-clean graphene |
| CN109422260B (en) * | 2017-08-30 | 2020-09-04 | 北京大学 | Method for preparing ultra-clean graphene based on activated carbon compound |
| CN107706382B (en) * | 2017-09-27 | 2019-12-10 | 江苏科技大学 | Flaky sodium-manganese oxide and preparation method and application thereof |
| CN107706382A (en) * | 2017-09-27 | 2018-02-16 | 江苏科技大学 | A kind of sheet sodium manganese oxide and preparation method and application |
| CN109704443A (en) * | 2019-02-26 | 2019-05-03 | 广东工业大学 | A kind of capacitive deionization adsorption electrode and preparation method thereof |
| CN109704443B (en) * | 2019-02-26 | 2021-12-24 | 广东工业大学 | Capacitive deionization adsorption electrode and preparation method thereof |
| CN112624269A (en) * | 2019-09-24 | 2021-04-09 | 中国科学院过程工程研究所 | Wastewater treatment device and wastewater treatment method |
| CN113611543A (en) * | 2021-08-13 | 2021-11-05 | 南开大学 | Carbon nanotube-doped chitosan-based activated carbon material, capacitive deionization electrode and preparation method |
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