JPS62226580A - Redox flow battery - Google Patents
Redox flow batteryInfo
- Publication number
- JPS62226580A JPS62226580A JP61069108A JP6910886A JPS62226580A JP S62226580 A JPS62226580 A JP S62226580A JP 61069108 A JP61069108 A JP 61069108A JP 6910886 A JP6910886 A JP 6910886A JP S62226580 A JPS62226580 A JP S62226580A
- Authority
- JP
- Japan
- Prior art keywords
- flow battery
- redox flow
- negative electrode
- positive electrode
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims description 17
- 229920001477 hydrophilic polymer Polymers 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 238000007600 charging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000007773 negative electrode material Substances 0.000 claims 1
- 239000007774 positive electrode material Substances 0.000 claims 1
- 238000002474 experimental method Methods 0.000 description 5
- 239000003014 ion exchange membrane Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005341 cation exchange Methods 0.000 description 3
- 238000010277 constant-current charging Methods 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000010220 ion permeability Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0289—Means for holding the electrolyte
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、電解液を正極側および負極側に供給し酸化
還元反応により充放電するレドックスフロー電池に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a redox flow battery that supplies an electrolytic solution to a positive electrode side and a negative electrode side and charges and discharges the battery through an oxidation-reduction reaction.
［従来の技術］
特公昭６０−２５１６３号には、電力貯蔵用２次電池と
してのレドックスフロー電池が開示されている。この種
のレドックスフロー電池では、隔膜により電極セルを正
極側と負極側に分離し、正極側には正極液を負極側には
負極液を供給し酸化還元反応により充放電を行なってい
る。隔膜としては、一般にイオン選択機能の大きなイオ
ン交換膜が用いられている。[Prior Art] Japanese Patent Publication No. 60-25163 discloses a redox flow battery as a secondary battery for power storage. In this type of redox flow battery, an electrode cell is separated into a positive electrode side and a negative electrode side by a diaphragm, a positive electrode liquid is supplied to the positive electrode side, and a negative electrode liquid is supplied to the negative electrode side, and charging and discharging are performed by an oxidation-reduction reaction. As the diaphragm, an ion exchange membrane with a large ion selection function is generally used.
［発明が解決しようとする問題点］
しかしながら、このようなイオン交換膜を隔膜として用
いると、その電気抵抗が大きいために、セル内部の電気
抵抗が増大しレドックスフロー電池全体としての充放電
エネルギ効率が低くなるという問題点があった。[Problems to be Solved by the Invention] However, when such an ion exchange membrane is used as a diaphragm, its high electrical resistance increases the electrical resistance inside the cell, reducing the charge/discharge energy efficiency of the redox flow battery as a whole. There was a problem that the value was low.
それゆえに、この発明の目的は、充放電エネルギ効率の
改善されたレドックスフロー電池を提供することにある
。Therefore, an object of the present invention is to provide a redox flow battery with improved charge/discharge energy efficiency.
［問題点を解決するための手段〕
この発明のレドックスフロー電池においては、正極と負
極との間に、水酸基を有する親水性ポリマーからなる隔
膜を設け、該隔膜により正極側と負極側に分離し、正極
側には正極液を負極側には負極液を供給し充放電を行な
っている。[Means for Solving the Problems] In the redox flow battery of the present invention, a diaphragm made of a hydrophilic polymer having a hydroxyl group is provided between the positive electrode and the negative electrode, and the diaphragm separates the positive electrode side and the negative electrode side. A positive electrode liquid is supplied to the positive electrode side and a negative electrode liquid is supplied to the negative electrode side for charging and discharging.
［作用］
この発明で用いられる隔膜は、水酸基を有する親水性ポ
リマーから構成されているため、正極液および負極液に
対し親和性を有し、従来使用されているイオン交換膜に
比ベイオン透過性に優れている。したがって、その電気
抵抗は小さく、セル内部の電気抵抗を低下させることが
できる。[Function] Since the diaphragm used in this invention is composed of a hydrophilic polymer having hydroxyl groups, it has an affinity for the positive and negative electrode liquids, and has a relative ion permeability compared to conventionally used ion exchange membranes. Excellent. Therefore, its electrical resistance is small, and the electrical resistance inside the cell can be reduced.
また、本発明者等が既に提案している正極液と負極液と
がほぼ同一組成の電解液である１液型のレドックスフロ
ー電池では、隔膜を通しての電極活物質の混合の影響が
少ないので、特にこの発明がを効に利用される。In addition, in the one-component redox flow battery that the present inventors have already proposed, in which the positive and negative electrode liquids are electrolytes with almost the same composition, the influence of mixing of electrode active materials through the diaphragm is small. In particular, this invention can be effectively utilized.
［実施例コ
正極液および負極液として同一組成の電解液（ＣｒＣ之
、１モルとＦｅＣ迂２１モルを含んだ２Ｎ−ＨＣｆＬ水
溶液）、電極としてカーボン繊維布を用い、電極面積９
０ｍ２の小型電池で以下の実験を行なった。[Example 1] An electrolytic solution having the same composition as the positive electrode liquid and negative electrode liquid (a 2N-HCfL aqueous solution containing 1 mol of CrC and 21 mol of FeC), carbon fiber cloth as the electrode, and an electrode area of 9
The following experiment was conducted using a small battery of 0 m2.
実験１
市販の再生セルロースフィルム（膜厚５０μｍ）を用い
、室温にて電流密度４０ｍＡ／ｃｍ２で定電流充放電を
行なった。得られたエネルギ効率は、陽イオン交換膜を
用いた従来の場合を１００とすると、１０５％程度であ
った。Experiment 1 Using a commercially available regenerated cellulose film (film thickness: 50 μm), constant current charging and discharging was performed at room temperature at a current density of 40 mA/cm 2 . The energy efficiency obtained was about 105%, taking the conventional case using a cation exchange membrane as 100.
実験２
実験１と同様の再生セルロースフィルムを４枚重ね合わ
せて隔膜として用い、室温にて電流密度４０ｍＡ／ｃｍ
２で定電流充放電を行なった。得られたエネルギ効率は
、陽イオン交換膜を用いた従来の場合を１００とすると
、１１４％程度であった。Experiment 2 Four regenerated cellulose films similar to Experiment 1 were stacked together and used as a diaphragm, and the current density was 40 mA/cm at room temperature.
2, constant current charging and discharging was performed. The energy efficiency obtained was about 114%, taking the conventional case using a cation exchange membrane as 100.
実験３
隔膜として、エチレンビニルアルコール共重合体（エチ
レン含有量３０モル％）からなる膜（膜厚１５μｍ）を
用い、室温にて電流密度４０ｍＡ／Ｃｍ２で定電流充放
電を行なった。得られたエネルギ効率は、陽イオン交換
膜を用いた従来の場合を１００とすると、１２０％程度
であった。Experiment 3 A membrane (film thickness: 15 μm) made of ethylene vinyl alcohol copolymer (ethylene content: 30 mol %) was used as the diaphragm, and constant current charging and discharging was performed at room temperature at a current density of 40 mA/Cm 2 . The energy efficiency obtained was about 120%, taking the conventional case using a cation exchange membrane as 100.
以上の実験例から、この発明のレドックスフロー電池は
１、従来のイオン交換膜を隔膜として用いたレドックス
フロー電池に比べ、充放電エネルギ効率の向上すること
が確認された。From the above experimental examples, it was confirmed that the redox flow battery of the present invention has improved charge/discharge energy efficiency compared to a redox flow battery using a conventional ion exchange membrane as a diaphragm.
なお、親水性ポリマーとしてセルロース系ポリマーを用
いる場合には、隔膜の厚みを１００μｍ以上にするこに
より、より優れたこの発明の効果が得られる。また、親
水性ポリマーとしてエチレンビニルアルコール共重合体
を用いる場合には、適度な親水性を付与するため、エチ
レン含有量が４４モル％以下のものを用いることが好ま
しい。In addition, when using a cellulose polymer as the hydrophilic polymer, more excellent effects of the present invention can be obtained by setting the thickness of the diaphragm to 100 μm or more. Further, when using an ethylene vinyl alcohol copolymer as the hydrophilic polymer, it is preferable to use one having an ethylene content of 44 mol% or less in order to impart appropriate hydrophilicity.
この実施例では、水酸基を有する親水性ポリマーとして
、セルロース系ポリマーおよびエチレンビニルアルコー
ル共重合体を例示して用いたが、この発明はこれらの親
水性ポリマーに限定されるものではない。In this example, a cellulose polymer and an ethylene vinyl alcohol copolymer were used as examples of hydrophilic polymers having hydroxyl groups, but the present invention is not limited to these hydrophilic polymers.
また、実施例においては、同一組成の電解液を正極液お
よび負極液として用いる１液型のレドックスフロー電池
を用いて説明したが、この発明のレドックスフロー電池
は、正極液および負極液が別組成の電解液である２液型
レドツクスフロー電池にも利用され得るものであること
は言うまでもない。In addition, in the examples, a one-component type redox flow battery in which the electrolytic solution of the same composition is used as the positive electrode liquid and the negative electrode liquid was explained, but in the redox flow battery of the present invention, the positive electrode liquid and the negative electrode liquid have different compositions. Needless to say, it can also be used in a two-component type redox flow battery, which uses an electrolyte.
［発明の効果］
この発明のレドックスフロー電池では、隔膜として、水
酸基を有する親水性ポリマーからなる隔膜を用いている
ため、従来から使用されているイオン交換膜を隔膜とし
て用いた場合に比べ、電解液に対し親和性を有しイオン
透過性が優れている。[Effects of the Invention] Since the redox flow battery of the present invention uses a diaphragm made of a hydrophilic polymer having hydroxyl groups, electrolytic It has an affinity for liquids and has excellent ion permeability.
したがって、従来よりもセル内部の電気抵抗が小さくな
り、その結果充放電エネルギ効率が著しく改善される。Therefore, the electrical resistance inside the cell becomes smaller than before, and as a result, the charge/discharge energy efficiency is significantly improved.
Claims (6)
極液を負極に負極液を供給し、充放電を行なうレドック
スフロー電池において、 前記隔膜が水酸基を有する親水性ポリマーからなること
を特徴とする、レドックスフロー電池。(1) In a redox flow battery in which a positive electrode and a negative electrode are separated by a diaphragm, and charging and discharging are performed by supplying a positive electrode liquid to the positive electrode and a negative electrode liquid to the negative electrode, the diaphragm is made of a hydrophilic polymer having a hydroxyl group. Features a redox flow battery.
ることを特徴とする、特許請求の範囲第１項記載のレド
ックフロー電池。(2) The redoc flow battery according to claim 1, wherein the hydrophilic polymer is a cellulose polymer.
１００μｍ以上であることを特徴とする、特許請求の範
囲第２項記載のレドックスフロー電池。(3) The redox flow battery according to claim 2, wherein the diaphragm made of the cellulose polymer has a thickness of 100 μm or more.
共重合体であることを特徴とする、特許請求の範囲第１
項記載のレドックスフロー電池。(4) Claim 1, wherein the hydrophilic polymer is an ethylene vinyl alcohol copolymer.
Redox flow battery as described in section.
ン含有量が４４モル％以下であることを特徴とする、特
許請求の範囲第４項記載のレドックスフロー電池。(5) The redox flow battery according to claim 4, wherein the ethylene content of the ethylene vinyl alcohol copolymer is 44 mol% or less.
の正極活物質と負極活物質の双方を含むことを特徴とす
る、特許請求の範囲第１〜５項のいずれか１項に記載の
レドックスフロー電池。(6) The method according to any one of claims 1 to 5, wherein the positive electrode liquid and the negative electrode liquid each contain substantially equimolar amounts of both the positive electrode active material and the negative electrode active material. redox flow battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61069108A JPS62226580A (en) | 1986-03-26 | 1986-03-26 | Redox flow battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61069108A JPS62226580A (en) | 1986-03-26 | 1986-03-26 | Redox flow battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62226580A true JPS62226580A (en) | 1987-10-05 |
Family
ID=13393102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61069108A Pending JPS62226580A (en) | 1986-03-26 | 1986-03-26 | Redox flow battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62226580A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013100079A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| WO2013100083A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| WO2013100087A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| WO2013100082A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| WO2014030230A1 (en) * | 2012-08-22 | 2014-02-27 | 日新電機 株式会社 | Energy storage battery |
| WO2016006075A1 (en) * | 2014-07-10 | 2016-01-14 | 日新電機 株式会社 | Redox flow battery |
| WO2018096895A1 (en) | 2016-11-24 | 2018-05-31 | 旭化成株式会社 | Carbon foam and membrane electrode composite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122574A (en) * | 1984-07-09 | 1986-01-31 | Sumitomo Electric Ind Ltd | Cell construction |
-
1986
- 1986-03-26 JP JP61069108A patent/JPS62226580A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122574A (en) * | 1984-07-09 | 1986-01-31 | Sumitomo Electric Ind Ltd | Cell construction |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3091600A1 (en) | 2011-12-28 | 2016-11-09 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| WO2013100083A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| WO2013100087A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| WO2013100082A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| US10256493B2 (en) | 2011-12-28 | 2019-04-09 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| KR20140098189A (en) | 2011-12-28 | 2014-08-07 | 아사히 가세이 이-매터리얼즈 가부시키가이샤 | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| US10211474B2 (en) | 2011-12-28 | 2019-02-19 | Asahi Kasei E-Materials Corporation | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| US9905875B2 (en) | 2011-12-28 | 2018-02-27 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| EP3091598A1 (en) | 2011-12-28 | 2016-11-09 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| EP3046174A1 (en) | 2011-12-28 | 2016-07-20 | Asahi Kasei E-materials Corporation | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| US9799906B2 (en) | 2011-12-28 | 2017-10-24 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary battery |
| EP3091599A1 (en) | 2011-12-28 | 2016-11-09 | Asahi Kasei Kabushiki Kaisha | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| WO2013100079A1 (en) | 2011-12-28 | 2013-07-04 | 旭化成イーマテリアルズ株式会社 | Redox flow secondary battery and electrolyte membrane for redox flow secondary batteries |
| US9680176B2 (en) | 2012-08-22 | 2017-06-13 | Nissin Electric Co., Ltd. | Energy storage battery |
| JP5920470B2 (en) * | 2012-08-22 | 2016-05-18 | 日新電機株式会社 | Power storage battery |
| WO2014030230A1 (en) * | 2012-08-22 | 2014-02-27 | 日新電機 株式会社 | Energy storage battery |
| JPWO2016006075A1 (en) * | 2014-07-10 | 2017-04-27 | 日新電機株式会社 | Redox flow battery |
| CN106463751A (en) * | 2014-07-10 | 2017-02-22 | 日新电机株式会社 | Redox flow battery |
| WO2016006075A1 (en) * | 2014-07-10 | 2016-01-14 | 日新電機 株式会社 | Redox flow battery |
| WO2018096895A1 (en) | 2016-11-24 | 2018-05-31 | 旭化成株式会社 | Carbon foam and membrane electrode composite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3505918B2 (en) | Redox flow battery | |
| US4414090A (en) | Separator membranes for redox-type electrochemical cells | |
| US5518838A (en) | Electrochemical cell having solid polymer electrolyte and asymmetric inorganic electrodes | |
| US3352720A (en) | Polymeric depolarizers | |
| US6743548B2 (en) | Silver-zinc alkaline rechargeable battery (stacking order) | |
| GB1569398A (en) | Metal halogen batteries and method of operating same | |
| EP0790658A3 (en) | Redox flow cell battery with vanadium electrolyte and a polysulfone-based semipermeable membrane | |
| US4029854A (en) | Halogen electrode | |
| JPS6035462A (en) | Electrochemical battery | |
| US4185144A (en) | Electrochemical cell with a cadmium patch electrode | |
| WO1985001155A1 (en) | Iodine cell | |
| JPS62226580A (en) | Redox flow battery | |
| JPH06260183A (en) | Diaphragm for water-solvent electrochemical device and water-solvent battery using the same | |
| US4034144A (en) | Separator for secondary alkaline batteries | |
| US5011749A (en) | Thin ribbonlike flexible rechargeable zinc/halide cell | |
| EP0077030A1 (en) | Electrochemical cell with improved separator system | |
| JPH06105615B2 (en) | Redox flow battery | |
| US4824743A (en) | Secondary battery with ion-exchange porous membrane | |
| EP0171285A2 (en) | Method of operating zinc bromide electrolyte secondary battery | |
| JPS60249266A (en) | Separator for zinc-bromine battery | |
| JPS59214173A (en) | Separator for zinc-bromine battery | |
| JPS62226581A (en) | redox flow battery | |
| KR102244179B1 (en) | Redox flow cell comprising cellulose | |
| JP7069224B2 (en) | Ion exchange separation membrane and flow battery containing it | |
| JPH08109196A (en) | Composite electrode and manufacturing method thereof |