CN102299348A - Porous electrode structure of redox flow battery and preparation method thereof - Google Patents
Porous electrode structure of redox flow battery and preparation method thereof Download PDFInfo
- Publication number
- CN102299348A CN102299348A CN2010102101121A CN201010210112A CN102299348A CN 102299348 A CN102299348 A CN 102299348A CN 2010102101121 A CN2010102101121 A CN 2010102101121A CN 201010210112 A CN201010210112 A CN 201010210112A CN 102299348 A CN102299348 A CN 102299348A
- Authority
- CN
- China
- Prior art keywords
- electrode
- porous
- porous electrode
- battery
- electrode structure
- 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
Images
Classifications
-
- 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
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
The invention relates to a porous electrode structure of a redox flow battery and a preparation method thereof. A strip-shaped, triangular, trapezoidal or special-shaped region, the density of which is more than and/or less than the average density of a porous electrode, is arranged in the porous electrode. The porous electrode is designed into a structure with a convex or concave surface. After the porous electrode is compressed, local compression ratios of the electrode are different. The part with the higher compression ratio is relatively difficult for liquid to flow through because of high relative density, macro-pore, small fluid and high resistance while the part with the lower compression ratio is easy for liquid to flow through because of low relative density, micro-pore, large fluid and low resistance. According to the structure disclosed by the invention, the fluid distribution in the battery is optimized, therefore, the energy conversion efficiency of the battery is increased; and the service life of the battery is prolonged.
Description
Technical field
The present invention relates to redox flow batteries, specifically porous electrode structure of a kind of flow battery and preparation method thereof.
Background technology
Along with high speed development of national economy, the contradiction between the energy, resource, the environment seems and becomes increasingly conspicuous that country proposes development solar energy, wind power generation is main renewable and clean energy resource, builds the mode of economic development of sustainable development.But solar energy, wind energy produce marked change along with changing its energy output round the clock, and the electric energy that is difficult to keep stable is exported, and the apparatus for storing electrical energy of needs and certain scale matches, and constitutes complete electric power system, guarantees continual and steady supply of electrical energy.Therefore advantages such as the redox flow batteries system has electrical power storage and efficient transformation function, and battery capacity can improve along with the increase of fluid reservoir volume, and long service life, operation and maintenance expense are low all have good development prospect in a lot of fields.
The electrolyte of redox flow batteries maldistribution occurs easily when inside battery flows, easily form the dead angle that no electrolyte flows through, and makes this partial polarization have a strong impact on cell conversion efficiency, even can have influence on battery useful life.
Summary of the invention
The present invention relates to porous electrode structure of a kind of redox flow batteries that can improve the battery charging and discharging performance and preparation method thereof; This design preparation is simple, with low cost.
For achieving the above object, the technical solution used in the present invention:
A kind of porous electrode structure of flow battery, described porous electrode inside be provided with density greater than and/or less than the bar shaped of porous electrode averag density, triangle, trapezoidal or special-shaped zone; In inner parallel flow field, serpentine flow, interdigital shape flow field or the special-shaped flow field of forming of porous electrode.
Density greater than and/or be the 5%-55% of electrode averag density less than the absolute value of porous electrode averag density zone and the density contrast of porous electrode averag density.
The preparation of described electrode structure: cut out bar shaped, triangle, trapezoidal or special-shaped groove in porous material surface, make porous material surface form the projection surface texture alternate with depression;
During the flow battery assembling, porous material compression back is owing to the difference of compression ratio, and each regional pore size of electrode differs, and forms the electrolyte flow field, makes it electrolyte is distributed by the resistance that changes fluid.
The thickness compression ratio scope of porous material is between 40%-90%, and the difference of the thickness compression ratio that each is interregional is at 5%-55%; Described porous material is graphite felt or carbon felt.
The compression ratio of electrode part has difference after compression, the part that compression ratio is bigger flows through being not easy owing to the little fluid resistance ambassador's liquid phase of relative density macrovoid, and the less part of compression ratio is because the big fluid resistance in relative density fine pore makes liquid relatively easily pass through for a short time.Thereby make electrode have the function optimization battery conversion efficiency of distributing fluids by the resistance that changes electrode partial compression rate change electrode local convection body.
The invention has the advantages that:
A) electrolyte is mobile comparatively smooth and easy at inside battery, can optimize fluid and distribute the raising battery conversion efficiency.
B) implement simply, with low cost.
C) this structural design optimization the cell fluid distribution, thereby improve energy content of battery conversion efficiency, prolong battery useful life.
Description of drawings
Fig. 1 has the porous material surface structural representation of strip bulge for embodiment 1;
Fig. 2 has the porous material surface structural representation of snakelike depression for embodiment 2;
Fig. 3 has the protruding porous material surface structural representation of abnormity for embodiment 3.
Embodiment
Embodiment 1
Porous material surface is cut, as shown in Figure 1, make porous material surface form strip bulge;
The long 10cm of porous material, wide 8cm, body thickness 1cm.The fluid of parallel 4 row's projectioies distributes bar on the porous material.Fluid distributes the long 8cm of bar, wide 0.8cm, high 0.5cm.Distribute bar stripe pitch 0.96cm.With porous electrode and pole plate, barrier film, electrolyte etc. are assembled into all-vanadium flow battery and in assembling process porous electrode thickness are compressed to 9mm.40mA/cm
2The test battery energy conversion efficiency is 80% to compare battery efficiency than the undressed all-vanadium flow battery of electrode surface and increased by 1% under the condition.
Embodiment 2
The long 10cm of porous material, wide 8cm, body thickness 1cm.Porous material surface is cut, as shown in Figure 2, make porous material surface form snakelike depression.With porous electrode and pole plate, barrier film, electrolyte etc. are assembled into all-vanadium flow battery and in assembling process porous electrode thickness are compressed to 9mm.40mA/cm
2The test battery energy conversion efficiency is that 79.6% all-vanadium flow battery more undressed than electrode surface compared battery efficiency and increased by 0.05% under the condition.
Embodiment 3
The long 10cm of porous material, wide 8cm, body thickness 1cm.Porous material surface is cut, as shown in Figure 3, make porous material surface form the abnormity projection.With porous electrode and pole plate, barrier film, electrolyte etc. are assembled into all-vanadium flow battery and in assembling process porous electrode thickness are compressed to 9mm.40mA/cm
2The test battery energy conversion efficiency is 79.7% to compare battery efficiency than the undressed all-vanadium flow battery of electrode surface and increased by 0.06% under the condition.
Claims (7)
1. the porous electrode structure of a flow battery is characterized in that:
Described porous electrode inside be provided with density greater than and/or less than the bar shaped of porous electrode averag density, triangle, trapezoidal or special-shaped zone.
2. electrode structure as claimed in claim 1 is characterized in that: inner each the areal concentration difference of porous electrode, and in inner parallel flow field, serpentine flow, interdigital shape flow field or the special-shaped flow field of forming of porous electrode.
3. electrode structure as claimed in claim 1 is characterized in that: density greater than and/or be the 5%-55% of electrode averag density less than the absolute value of porous electrode averag density zone and the density contrast of porous electrode averag density.
4. the preparation method of the described electrode structure of claim 1 is characterized in that:
Cut out bar shaped, triangle, trapezoidal or special-shaped groove or projection in porous material surface, make porous material surface form the projection surface texture alternate with depression;
During the flow battery assembling, porous material compression back is owing to the difference of compression ratio, and each regional pore size of electrode differs, and forms the electrolyte flow field, makes it electrolyte is distributed by the resistance that changes fluid.
5. as the preparation method of electrode structure as described in the claim 4, it is characterized in that: the thickness compression ratio scope of porous material is between 40%-90%, and the difference of the thickness compression ratio that each is interregional is at 5%-55%.
6. as the preparation method of electrode structure as described in the claim 4, it is characterized in that: described porous material is graphite felt, carbon felt or compound conductive plastic electrode.
7. as compound conductive plastic electrode as described in the claim 6, it is characterized in that: electrode material is made up of conductive filler and plastics thing, and conductive filler is carbon dust, graphite powder or graphite fibre, and the plastics thing is polyethylene or polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102101121A CN102299348A (en) | 2010-06-25 | 2010-06-25 | Porous electrode structure of redox flow battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102101121A CN102299348A (en) | 2010-06-25 | 2010-06-25 | Porous electrode structure of redox flow battery and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102299348A true CN102299348A (en) | 2011-12-28 |
Family
ID=45359616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102101121A Pending CN102299348A (en) | 2010-06-25 | 2010-06-25 | Porous electrode structure of redox flow battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102299348A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332589A (en) * | 2011-07-29 | 2012-01-25 | 珠海锂源动力科技有限公司 | Electrode used on redox flow battery |
| CN102709571A (en) * | 2012-06-29 | 2012-10-03 | 中国东方电气集团有限公司 | Porous electrode, and flow battery, battery stack, and battery system containing porous electrodes |
| CN104518227A (en) * | 2013-09-29 | 2015-04-15 | 中国科学院大连化学物理研究所 | Current collector for flow cells |
| CN105762369A (en) * | 2014-12-16 | 2016-07-13 | 中国科学院大连化学物理研究所 | All-vanadium flow battery porous carbon fiber felt electrode material and preparation and application thereof |
| CN108155389A (en) * | 2017-11-29 | 2018-06-12 | 辽宁科技大学 | It is a kind of from the flow channel type flow battery preparation method of graphite felt electrode material |
| CN110867594A (en) * | 2018-08-27 | 2020-03-06 | 大连融科储能装备有限公司 | Flow field structure of flow battery |
| CN111224144A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Flow battery pile structure and application thereof |
| CN112042027A (en) * | 2018-02-28 | 2020-12-04 | 西门子股份公司 | Redox flow battery having at least one cell and electrode element, and method for producing a guide structure for an electrode element of a redox flow battery |
| CN112086653A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt structure for flow battery and flow battery using same |
| CN112086654A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
| CN112201803A (en) * | 2020-09-30 | 2021-01-08 | 香港科技大学 | Convection enhanced snake-shaped flow channel for flow battery |
| CN114551911A (en) * | 2020-11-25 | 2022-05-27 | 中国科学院大连化学物理研究所 | Preparation and application of negative electrode structure for zinc-based flow battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6475661B1 (en) * | 1998-01-28 | 2002-11-05 | Squirrel Holdings Ltd | Redox flow battery system and cell stack |
| CN101325252A (en) * | 2007-06-15 | 2008-12-17 | 清华大学 | Double pole plate for fluid flow battery |
| CN101719556A (en) * | 2009-11-24 | 2010-06-02 | 攀枝花新钢钒股份有限公司 | Pile structure of redox flow battery |
-
2010
- 2010-06-25 CN CN2010102101121A patent/CN102299348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6475661B1 (en) * | 1998-01-28 | 2002-11-05 | Squirrel Holdings Ltd | Redox flow battery system and cell stack |
| CN101325252A (en) * | 2007-06-15 | 2008-12-17 | 清华大学 | Double pole plate for fluid flow battery |
| CN101719556A (en) * | 2009-11-24 | 2010-06-02 | 攀枝花新钢钒股份有限公司 | Pile structure of redox flow battery |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332589B (en) * | 2011-07-29 | 2014-05-28 | 珠海锂源新能源科技有限公司 | Electrode used on redox flow battery |
| CN102332589A (en) * | 2011-07-29 | 2012-01-25 | 珠海锂源动力科技有限公司 | Electrode used on redox flow battery |
| CN102709571A (en) * | 2012-06-29 | 2012-10-03 | 中国东方电气集团有限公司 | Porous electrode, and flow battery, battery stack, and battery system containing porous electrodes |
| CN104518227A (en) * | 2013-09-29 | 2015-04-15 | 中国科学院大连化学物理研究所 | Current collector for flow cells |
| CN105762369A (en) * | 2014-12-16 | 2016-07-13 | 中国科学院大连化学物理研究所 | All-vanadium flow battery porous carbon fiber felt electrode material and preparation and application thereof |
| CN108155389A (en) * | 2017-11-29 | 2018-06-12 | 辽宁科技大学 | It is a kind of from the flow channel type flow battery preparation method of graphite felt electrode material |
| CN108155389B (en) * | 2017-11-29 | 2020-05-12 | 辽宁科技大学 | Preparation method of graphite felt electrode material for self-flow-channel flow battery |
| CN112042027A (en) * | 2018-02-28 | 2020-12-04 | 西门子股份公司 | Redox flow battery having at least one cell and electrode element, and method for producing a guide structure for an electrode element of a redox flow battery |
| CN110867594A (en) * | 2018-08-27 | 2020-03-06 | 大连融科储能装备有限公司 | Flow field structure of flow battery |
| CN111224144A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Flow battery pile structure and application thereof |
| CN111224144B (en) * | 2018-11-26 | 2024-04-16 | 中国科学院大连化学物理研究所 | Flow battery pile structure and application thereof |
| CN112086653A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt structure for flow battery and flow battery using same |
| CN112086654A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
| CN112086654B (en) * | 2019-06-14 | 2022-04-12 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
| CN112201803A (en) * | 2020-09-30 | 2021-01-08 | 香港科技大学 | Convection enhanced snake-shaped flow channel for flow battery |
| CN114551911A (en) * | 2020-11-25 | 2022-05-27 | 中国科学院大连化学物理研究所 | Preparation and application of negative electrode structure for zinc-based flow battery |
| CN114551911B (en) * | 2020-11-25 | 2023-09-19 | 中国科学院大连化学物理研究所 | Preparation and application of negative electrode structure for zinc-based flow battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102299348A (en) | Porous electrode structure of redox flow battery and preparation method thereof | |
| Lee et al. | Self-assembled NiO/Ni (OH) 2 nanoflakes as active material for high-power and high-energy hybrid rechargeable battery | |
| Liu et al. | A flexible alkaline rechargeable Ni/Fe battery based on graphene foam/carbon nanotubes hybrid film | |
| CN103219491B (en) | Copper sulfide anode and preparation method thereof | |
| Jiao et al. | Holey three-dimensional wood-based electrode for vanadium flow batteries | |
| Shang et al. | Insight into the self-discharge suppression of electrochemical capacitors: progress and challenges | |
| US20110281169A1 (en) | Electrode for a flow battery | |
| CN107863536B (en) | Multi-scale porous electrode applied to flow battery and preparation method and application thereof | |
| CN105355457A (en) | Lithium ion capacitor and formation method thereof | |
| CN104538662B (en) | A kind of flow battery system | |
| CN109037725B (en) | Flow battery capable of improving distribution uniformity of electrolyte, electrode structure and method | |
| CN108054019A (en) | Laminated construction NiCo2S4@NixCo(1-x)(OH)2The preparation method and application of composite material | |
| CN104064370A (en) | Method for realizing energy density maximization of supercapacitor | |
| CN106981371A (en) | A kind of water system electrolyte super capacitance cell | |
| CN102136594A (en) | Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile | |
| CN103474254A (en) | Preparation method for supercapacitor electrode material containing MnCo2O4.5 | |
| CN103500838A (en) | Carbon nano-material lithium-air battery air electrode, preparation method and lithium-air battery thereof | |
| CN101894682A (en) | High-energy ultracapacitor | |
| KR101163996B1 (en) | a redox flow secondary cell having metal foam electrodes | |
| CN104282445A (en) | Cobaltosic oxide N-doped carbon nano tube composite electrode material for super capacitor and manufacturing method thereof | |
| CN104201008A (en) | Nickel oxide and nitrogen doped carbon nanotube composite electrode materials for super capacitor and production method thereof | |
| CN106532093A (en) | Quinone metal redox couple flow cell system | |
| CN106532069A (en) | Composite electrode for flow batteries and preparation method thereof | |
| KR20170031352A (en) | Method for manufacturing a renewable energy storage and utilization equipment using microbial fuel cells | |
| CN105322197A (en) | High specific surface area bipolar plate for flow battery and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN RONGKE POWER CO., LTD. Free format text: FORMER OWNER: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Effective date: 20120629 Free format text: FORMER OWNER: DALIAN RONGKE POWER CO., LTD. Effective date: 20120629 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 116023 DALIAN, LIAONING PROVINCE TO: 116025 DALIAN, LIAONING PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20120629 Address after: 116025 No. 22, XinDa street, Dalian hi tech Industrial Park, Liaoning Applicant after: Dalian Rongke Power Co., Ltd. Address before: 116023 Zhongshan Road, Liaoning, No. 457, Applicant before: Dalian Institute of Chemical Physics, Chinese Academy of Sciences Co-applicant before: Dalian Rongke Power Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111228 |