WO2017052328A1 - 레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 이를 포함하레독스 흐름 전지의 전극 - Google Patents
레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 이를 포함하레독스 흐름 전지의 전극 Download PDFInfo
- Publication number
- WO2017052328A1 WO2017052328A1 PCT/KR2016/010761 KR2016010761W WO2017052328A1 WO 2017052328 A1 WO2017052328 A1 WO 2017052328A1 KR 2016010761 W KR2016010761 W KR 2016010761W WO 2017052328 A1 WO2017052328 A1 WO 2017052328A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- redox flow
- flow battery
- slurry composition
- electrode
- weight
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/96—Carbon-based electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a slurry composition for producing an electrode of a redox flow battery and an electrode of a redox flow battery including the same.
- Redox f low bat tery' refers to an oxidation / reduction cell capable of converting chemical energy of an active substance directly into electrical energy as a secondary battery.
- an electrolyte solution containing an active material causing an oxidation / reduction reaction circulates between a counter electrode and a storage tank, and layer discharge proceeds.
- a unit cell fractionated into a separator wherein the unit cell comprises an electrode, an electrolyte, and a separator.
- the redox flow battery is a system in which the active material (active mater al) in the electrolyte is oxidized / reduced and layer discharged, so that the battery output and the electrolyte tank can be separated, allowing the output and capacity to be freely designed.
- the electrodes also have the advantage of being durable because they use inert electrodes and operate at silver.
- the performance of the redox flow battery is largely affected by the type of active material in the electrolyte, the type of separator and the type of electrode.
- the combination of the active material that causes the oxidation / reduction reaction is generally called a redox couple.
- the separator has high selectivity for ions, low electrical resistance, and requires chemical stability and mechanical strength.
- the electrode of the redox flow battery is an inactive electrode, the electrode itself does not chemically react, and serves to provide a migration path of the oxidation / reduction reaction.
- the electrode is manufactured by coating a carbon compound having a large reaction area on the conductive plastic sheet in order to maximize the redox reaction.
- the carbon compound powder may not be uniformly applied, and the thermocompression process is performed to fix the carbon compound powder, thereby improving the productivity of the final product. This could be lowered, and there was a limit that the thermally compressed carbon compound powder could later be peeled off and the performance of the battery could be lowered.
- the sheet used for forming the electrode is in most cases non-polar, there is a problem that the adhesion between the non-polar substrate and the carbon compound powder may fall off, so as to reduce the durability of the redox flow battery Cause. Accordingly, there is a need for development of a slurry composition capable of producing an electrode having excellent adhesion with a nonpolar substrate and high conductivity.
- the present invention is to provide a slurry composition for producing an electrode of a redox flow battery.
- the present invention is to provide an electrode of a redox flow battery prepared by the slurry composition.
- the present invention provides a slurry composition for producing an electrode of a redox flow battery comprising activated carbon, a conductive carbon and a solid containing polypropylene-graft-male anhydride, and a hydrophobic solvent.
- the term 'redox f low bat tery' refers to an oxidation / reduction cell capable of converting chemical energy of an active material directly into electrical energy.
- the combination of the active materials causing the oxidation / reduction reaction is generally called a redox couple, and in the present invention, redox such as Fe / Cr, V / V, V / Br, Zn / Br, and Zn / Ce Flow cells can be used.
- the slurry composition according to the present invention is for producing an electrode of such a redox flow battery, and includes activated carbon and conductive carbon as main materials constituting the electrode.
- the activated carbon used in the present invention is a carbon compound having pores of about 1 nm to 2 nra, and the activated carbon has a large area where the electrode and the electrolyte can be reacted by internal pores to increase the oxidation / reduction rate.
- the specific surface area of the activated carbon is 700 to 2200 m7g, and the average particle diameter is 2 to 80 mi. When the specific surface area is less than 700 m7g, the reaction area is small, so that the efficiency is low when applied to a redox flow battery.
- the conductive carbon used in the present invention is the main component of the electrode produced from the slurry composition according to the present invention.
- the conductive carbon one or more selected from the group consisting of carbon black, graphite, carbon fiber, and carbon nanotubes may be used.
- the conductive carbon includes all carbon black, graphite, carbon fiber and carbon nanotubes. More preferably, the above.
- the conductive carbon may include 6 to 10 parts by weight of carbon blocks, 4 to 10 parts by weight of graphite, 4 to 6 parts by weight of carbon fibers, and 1 to 5 parts by weight of carbon nano-lives.
- Commercially available examples include TimCal's SuperP, SuperC, and Ketj en's 300 J and 600J. .
- the polypropylene-graft-male anhydride used in the present invention serves as a binder of the slurry composition according to the present invention, and serves to bind the activated carbon and the conductive carbon.
- the polypropylene-graft-maleic anhydride has a structure in which male anhydride is grafted in a chain of polypropylene, and is grafted by male hydride.
- Polypropylene-graft-male Anhydride may have a weight average molecular weight of 3000 to 30000, but is not limited thereto.
- the activated carbon, the conductive carbon and the polypropylene-graft-male anhydride ⁇ are collectively referred to as 'solid content'.
- the slurry composition according to the present invention based on 100 parts by weight of the solid content, preferably 75 to 90 parts by weight of activated carbon, 5 to 15 parts by weight of conductive carbon, and 4 to 10 parts by weight of polypropylene-graft-male anhydride. Include.
- the present invention includes a hydrophobic organic solvent in addition to the solid.
- the hydrophobic organic solvent may more easily dissolve activated carbon and conductive carbon having hydrophobic properties, and may be uniformly mixed and dispersed to prepare a slurry.
- Specific examples of the hydrophobic organic solvent may include, for example, toluene and cyclo; Nucleic acid, xylene, N-methyl pyridone, dimethyl sulfoxide, dimethyl acetate, or a combination of two or more thereof.
- the slurry composition according to the present invention preferably contains 36 to 45 parts by weight of the solid content and 55 to 64 parts by weight of the hydrophobic solvent.
- the viscosity of the slurry composition according to the present invention is 1500 to 3500 cps.
- the slurry composition for electrode production of the said redox flow battery can be manufactured by forming a slurry phase by the mixing method which uses the above-mentioned component normally. Examples of the mixing method include agitation at high speed through a homogenizer or agitator, or using a screw of Di ssolver, Three rol l mi ll passing through, Bal l mi ll using the stratification of the ball, Agi tator mi ll 3 ⁇ 4 using the stratification of the particles can be used such as using an ultrasonic mixer.
- the mixing order of the above components is not particularly limited, and each component may be added or mixed in various orders to prepare a slurry composition.
- the present invention provides a method for producing an electrode of a redox flow battery comprising the step of coating the slurry composition for electrode production of the redox flow battery on a substrate.
- an electrode of a redox flow battery may be prepared by applying the slurry composition having the specific composition on a predetermined substrate, which may provide a uniform thickness and a wide reaction site in all areas.
- the slurry composition for preparing an electrode of the redox flow battery may be applied on a substrate in a thickness of 5 to 200.
- the substrate is a support of the slurry composition to be applied, and may be removed when a solid electrode is formed through a process such as drying.
- the substrates are not limited, and various conductive plastic sheets, organic substrates (such as polymer substrates), inorganic substrates (such as metal substrates), glass substrates, organic substrates such as fibers and wood, and the like can also be used.
- the coating of the slurry composition may use a variety of commonly known coating or application methods, for example, a slot die coater, a comma coater blade coater, a gravure coater, a bar coater, or a lip coater.
- the manufacturing method of the electrode of the redox flow battery may further comprise the step of drying the coated slurry composition.
- the method, apparatus or silver conditions that can be used in this drying step are also not particularly limited, and a method of heating to a predetermined heat source, venting method, drying method at room temperature or low temperature may be used in various ways.
- the method of manufacturing the electrode of the redox flow battery may further include defoaming the slurry composition.
- the present invention provides a redox flow battery including an electrode prepared using the slurry composition for electrode production of the redox flow battery.
- the redox flow battery may have a configuration of a redox flow battery commonly used in the art, except for using the electrode according to the present invention.
- the redox flow battery may include a tank in which active materials having different oxidation states are stored; A pump for circulating the active material during charging / discharging; And a unit cell fractionated into an electrode, an electrolyte, and a separator, and the unit cell may include an electrode, an electrolyte, and a porous separator manufactured according to the present invention.
- the slurry composition according to the present invention is excellent in adhesion to a nonpolar substrate and excellent in conductivity, and has the characteristics of increasing durability of a redox flow battery.
- Figure 1 shows the electrical resistance measurement method of the electrode prepared in an embodiment of ⁇ invention.
- Figure 2 shows a single cell test method of the electrode manufactured in one embodiment of the present invention.
- Figure 3 shows the single cell test results of the electrode manufactured in one embodiment of the present invention.
- Example 1
- Carbon powder 1 (carbon 1) is Calgon's Tog-LF (BET 800 mVg, average particle diameter 45-80), carbon powder 2 (carbon 2) is Timcal's SuperP, and binder is Lotte Chemical's GM5070E (PP-g-MAH ) Was used. First, 188 g of carbon powder and 2 8 g of carbon powder are added to the PDM Mixer.
- a slurry composition was prepared in the same manner as in Example 1, changing the carbon powder 1 of Example 1 to 86 g and the binder to 6 g. Examples 3-9
- Example 10 Carbon powder 1 in Example 1 was changed to YP-50KBET 1600 m7g of Kuraray Chemical, average particle 4-10), and a slurry composition was prepared according to the composition of Table 1 below. Comparative Example 1
- Example 2 Prepared in the same manner as in Example 1, but proceeded by changing the binder to PTFE and SBR.
- the ratio of PTFE and SBR was 2: 1 (w / w), and a solvent composition was prepared using distilled water instead of toluene. Specific slurry compositions are shown in Table 1 below. Comparative Example 2
- the viscosity of the slurry composition prepared in the said Example and the comparative example was measured, respectively.
- the slurry compositions prepared in Examples and Comparative Examples were coated with a doctor blade on a PP-Carbon Compos i te electrode as a substrate. Solids coated on the substrate were 5 mg / crf. Adhesion test, electrical resistance test and unit cell test were performed with the coated electrode.
- Adhesion test that after preparing the above-prepared electrode sample (30 X 45 ⁇ 2), 3 X 3 mm after cutting the coated side (a total of 150 coated side) the second interval, remaining attached to the adhesive tape, and removable Adhesion was calculated from the number of coated surfaces.
- the electrical resistance test was measured as in FIG. Specifically, after preparing the prepared electrode sample (40X160 ⁇ '), the metal bar is placed in contact with the electrode at a distance of 140 mm, 0.03 A is applied to the bar by using a multi-meter, the distance 100 mm Mult The voltage value of the electrode and the electrical resistance therefrom were measured using i-raeter.
- the unit cell test was performed as shown in FIG. 2. The test was conducted using a unit cell having a reaction area of 7 ⁇ 5 cn, and the charger / discharger 100 used Won-Atek Corporation.
- the unit cell is composed of a flow flame 130 to form a flow path to move the electrolyte based on the separator 140, an electrode 120 to move the electrons, and an end plate (llO) to maintain the shape of the unit cell. It is.
- An anode electrode was used as the PP-Carbon Composite electrode, the Cathode electrode was used to coat the slurry composition prepared in the Examples and Comparative Examples, respectively, prior to the PP-Carbon Composite electrode.
- Electrolyte solution of the electrolyte container is supplied to the unit cell through the pump, and the layer discharge and discharge was performed by applying a current of 700 mA through the charge and discharge ( 100 ).
- the charging capacity was 2.17 Ah.
- the test results are shown in Table 1 and FIG. 3.
- Example 9 75 15 10 45.3 3300 100 1.2
- Example 10 86 8 6 37.4. 1900 98 1.2 Comparative Example 1 86 8 6 36.6 2200 5 0.7 Comparative Example 2 78 12 10 38.9 2800 12 1.1
- the slurry composition according to the present invention did not have a significant difference in electrical resistance compared to the Comparative Example. However, it was confirmed that the adhesion is excellent.
- the charge amount efficiency was constant as the layer discharge Cyc le proceeded, but in the case of Comparative Example 1, it was gradually lowered. As a result, it was confirmed that Example 2 shows higher durability-compared to Comparative Example 1.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2016327335A AU2016327335A1 (en) | 2015-09-25 | 2016-09-26 | Slurry composition for manufacturing redox flow battery electrode, and redox flow battery electrode comprising same |
EP16849053.0A EP3355396A4 (en) | 2015-09-25 | 2016-09-26 | DISPOSABLE COMPOSITION FOR PREPARING A REDOX FLUX BATTERY ELECTRODE AND REDOX FLUX BATTERY ELECTRODE THEREWITH |
JP2018515644A JP2018529204A (ja) | 2015-09-25 | 2016-09-26 | レドックスフロー電池の電極製造用スラリー組成物およびこれを含むレドックスフロー電池の電極 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0136917 | 2015-09-25 | ||
KR1020150136917A KR101762900B1 (ko) | 2015-09-25 | 2015-09-25 | 레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 이를 포함하는 레독스 흐름 전지의 전극 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017052328A1 true WO2017052328A1 (ko) | 2017-03-30 |
Family
ID=58386488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/010761 WO2017052328A1 (ko) | 2015-09-25 | 2016-09-26 | 레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 이를 포함하레독스 흐름 전지의 전극 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3355396A4 (ko) |
JP (1) | JP2018529204A (ko) |
KR (1) | KR101762900B1 (ko) |
AU (1) | AU2016327335A1 (ko) |
WO (1) | WO2017052328A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004323709A (ja) * | 2003-04-25 | 2004-11-18 | Toyo Ink Mfg Co Ltd | 導電性樹脂組成物およびその成形品 |
KR100834057B1 (ko) * | 2007-06-13 | 2008-06-02 | 한국타이어 주식회사 | 연료전지 분리판 사출성형용 소재, 그로부터 제조된연료전지 분리판 및 연료전지 |
KR20110016298A (ko) * | 2009-08-11 | 2011-02-17 | 금오공과대학교 산학협력단 | 우수한 내열성 및 전기전도도를 갖는 폴리프로필렌-그라프트-말레산무수물/탄소나노튜브 나노복합체 |
KR101067867B1 (ko) * | 2010-04-14 | 2011-09-27 | 전자부품연구원 | 레독스 흐름 전지용 일체화된 흑연/dsa 전극, 이의 제조방법 및 이를 포함하는 레독스 흐름 전지 |
KR20140070180A (ko) * | 2012-11-30 | 2014-06-10 | 롯데케미칼 주식회사 | 레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 레독스 흐름 전지의 전극의 제조 방법 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2472646B1 (en) * | 2009-08-27 | 2022-07-06 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Aqueous coating liquid for an electrode plate, electrode plate for an electrical storage device, method for manufacturing an electrode plate for an electrical storage device, and electrical storage device |
US20110070481A1 (en) * | 2009-09-08 | 2011-03-24 | Delta Electronics, Inc. | Protective material and energy storage module using the same |
KR20130026790A (ko) * | 2011-09-06 | 2013-03-14 | 삼성전기주식회사 | 전극 활물질 조성물, 및 이를 포함하는 전기 화학 캐패시터 |
CN104332641A (zh) * | 2014-08-28 | 2015-02-04 | 清华大学 | 复合双极板的制备方法 |
-
2015
- 2015-09-25 KR KR1020150136917A patent/KR101762900B1/ko active IP Right Grant
-
2016
- 2016-09-26 WO PCT/KR2016/010761 patent/WO2017052328A1/ko active Application Filing
- 2016-09-26 AU AU2016327335A patent/AU2016327335A1/en not_active Abandoned
- 2016-09-26 EP EP16849053.0A patent/EP3355396A4/en not_active Withdrawn
- 2016-09-26 JP JP2018515644A patent/JP2018529204A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004323709A (ja) * | 2003-04-25 | 2004-11-18 | Toyo Ink Mfg Co Ltd | 導電性樹脂組成物およびその成形品 |
KR100834057B1 (ko) * | 2007-06-13 | 2008-06-02 | 한국타이어 주식회사 | 연료전지 분리판 사출성형용 소재, 그로부터 제조된연료전지 분리판 및 연료전지 |
KR20110016298A (ko) * | 2009-08-11 | 2011-02-17 | 금오공과대학교 산학협력단 | 우수한 내열성 및 전기전도도를 갖는 폴리프로필렌-그라프트-말레산무수물/탄소나노튜브 나노복합체 |
KR101067867B1 (ko) * | 2010-04-14 | 2011-09-27 | 전자부품연구원 | 레독스 흐름 전지용 일체화된 흑연/dsa 전극, 이의 제조방법 및 이를 포함하는 레독스 흐름 전지 |
KR20140070180A (ko) * | 2012-11-30 | 2014-06-10 | 롯데케미칼 주식회사 | 레독스 흐름 전지의 전극 제조용 슬러리 조성물 및 레독스 흐름 전지의 전극의 제조 방법 |
Non-Patent Citations (1)
Title |
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See also references of EP3355396A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP3355396A1 (en) | 2018-08-01 |
KR101762900B1 (ko) | 2017-07-28 |
EP3355396A4 (en) | 2019-08-07 |
JP2018529204A (ja) | 2018-10-04 |
KR20170037389A (ko) | 2017-04-04 |
AU2016327335A1 (en) | 2018-04-12 |
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