CN108615885A - A kind of graphite felt treatment process - Google Patents
A kind of graphite felt treatment process Download PDFInfo
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- CN108615885A CN108615885A CN201810289518.XA CN201810289518A CN108615885A CN 108615885 A CN108615885 A CN 108615885A CN 201810289518 A CN201810289518 A CN 201810289518A CN 108615885 A CN108615885 A CN 108615885A
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- Prior art keywords
- graphite felt
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- treatment
- temperature
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Classifications
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- 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
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/365—Zinc-halogen accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/38—Construction or manufacture
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind for the treatment of process of graphite felt, include the following steps：(1) organics removal；Graphite felt is placed in 500 900 DEG C of temperature and is annealed 5 15 minutes；(2) general impurity is removed；By step (1), treated that graphite felt is placed in No.1 liquid (SC 1), handles 5 10 minutes at a temperature of 70 80 DEG C, is then cleaned 5 10 minutes with deionized water again；Next No. two liquid (SC 2) are used, handles 5 10 minutes at a temperature of 70 80 DEG C, is then cleaned 5 10 minutes with deionized water again.(3) trace metal impurities of the difficult removal of removal；It will be placed in micro-wave oven and handle 5 15 minutes through step (2) processed graphite felt.Technical scheme of the present invention has the following technical effects：Treatment process is simple, and graphite felt that treated eliminates organic impurities, metal impurities etc., making of the graphite felt that treated for zinc bromine or zinc iodine battery.
Description
Technical field
The present invention relates to a kind for the treatment of process of graphite felt, belong to Materials Science and Engineering field.
Background technology
To improve current density, zinc series cell (such as zinc-bromine bettery or zinc iodine battery) often utilizes graphite felt (also known as charcoal felt
Or carbon felt) structure makes electrode, on the one hand can improve the specific surface area of electrode in this way, it is also certain auxiliary to preventing dendrite from rising
Help effect.
Graphite felt mainly has carbon fiber composition in fact, and keel are mainly glass (silica), with polyacrylonitrile-radical stone mill
For standing and (being also known as carbon felt), area weight 500g/m2And 1000g/m2, vertical and horizontal intensity (N/mm2) it is respectively 0.12,0.16
With 0.10,0.12, extension at break is respectively 3%, 4% and 18%, 16%, and resistivity (Ω mm) is respectively 4~6,3.5~5.5 and 7
~9,6~8, thermal coefficient is respectively 0.06W/ (mK) (25 DEG C), and specific surface area is equal>1.5m2/ g, ash content are smaller than 0.3%, contain
Sulfur content is all<0.03%.But due to including some impurity such as metal impurities, organic impurities etc. in common graphite felt, these
The presence of impurity will generate adverse effect to the performance of battery, so when making zinc series cell using graphite felt, it is necessary to right
Graphite felt, which carries out processing, to be used.
Invention content
The purpose of the invention is to provide a kind for the treatment of process of graphite felt, to solve the above problem of the prior art.
The purpose of the present invention can be achieved through the following technical solutions.
A kind for the treatment of process of graphite felt, includes the following steps：
(1) organics removal；Graphite felt is placed in 500-900 DEG C of temperature and is annealed 5-15 minutes；
(2) general impurity is removed；By step (1), treated that graphite felt is placed in No.1 liquid (SC-1), in 70-80 DEG C of temperature
Degree lower processing 5-10 minutes, is then cleaned 5-10 minutes with deionized water again；Next No. two liquid (SC-2) are used, in 70-80
It handles 5-10 minutes at a temperature of DEG C, is then cleaned 5-10 minutes with deionized water again.
(3) trace metal impurities of the difficult removal of removal；It will be placed in micro-wave oven and handle through step (2) processed graphite felt
5-15 minutes.
The No.1 formula of liquid is NH by volume3·H2O：H2O2：H2The ratio of O is 1:2:5；No. two liquid are matched
Side is HCl by volume:H2O2:H2The ratio of O is 1:2:8.
The No.1 formula of liquid is NH by volume3·H2O：H2O2：H2The ratio of O is 1:1:4, described No. two liquid are matched
Side is by volume 1:1:6.
In step (3), the power of the micro-wave oven is at least 700W, and the time is no less than 3 minutes.
The graphite felt handled by above-mentioned technical process can be used as electrode material in principle, be used for zinc bromine or zinc iodine battery
Making.
Technical scheme of the present invention has the following technical effects：Treatment process is simple, and treated, and graphite felt has eliminated
Machine object impurity, metal impurities etc., making of the graphite felt that treated for zinc bromine or zinc iodine battery.
Specific implementation mode
With reference to the specific embodiment technical characterstic that the present invention is further explained.
The embodiment of the present invention uses the treatment process of following graphite felt：
(1) organics removal；Graphite felt is placed in 500-900 DEG C of temperature and is annealed 5-15 minutes；
(2) general impurity is removed；By step (1), treated that graphite felt is placed in No.1 liquid (SC-1), in 70-80 DEG C of temperature
Then lower processing 5-10 minutes is cleaned 5-10 minutes with deionized water again；Next No. two liquid (SC-2) are used, at 70-80 DEG C
At a temperature of handle 5-10 minutes, then cleaned 5-10 minutes with deionized water again.
(3) trace metal impurities of the difficult removal of removal；It will be placed in micro-wave oven and handle through step (2) processed graphite felt
5-15 minutes.
When the formula using No.1 liquid is NH by volume3·H2O：H2O2：H2The ratio of O is 1:2:When 5, then No. two liquid choosings
It is HCl by volume with formula:H2O2:H2The ratio of O is 1:2:8.
When the use of No.1 formula of liquid being NH by volume3·H2O：H2O2：H2The ratio of O is 1:1:When 4, then No. two formula of liquid
It is by volume 1:1:6.
In step (3), the power of the micro-wave oven is at least 700W, and the time is no less than 3 minutes.
Embodiment 1
(1) organics removal；Graphite felt is placed in 500-900 DEG C of temperature and is annealed 5-15 minutes；
(2) general impurity is removed；By step (1), treated that graphite felt is placed in No.1 liquid (SC-1), in 70-80 DEG C of temperature
Then lower processing 5-10 minutes is cleaned 5-10 minutes with deionized water again；Next No. two liquid (SC-2) are used, at 70-80 DEG C
At a temperature of handle 5-10 minutes, then cleaned 5-10 minutes with deionized water again.
(3) trace metal impurities of the difficult removal of removal；It will be placed in micro-wave oven and handle through step (2) processed graphite felt
5-15 minutes.
Wherein, the formula of No.1 liquid is NH by volume3·H2O：H2O2：H2The ratio of O is 1:2:5, No. two liquid selections are matched
Side is HCl by volume:H2O2:H2The ratio of O is 1:2:8.
Using the graphite felt crossed by above-mentioned process, using 1M ZnI2 aqueous solutions as electrolyte, volume 1/ is added
10 alcohol, it (is 2 times of zinc iodide molal quantity, using cation-exchange membrane as diaphragm that a certain amount of iodine in addition, which is added, in anode.It adopts
It is protected with glass fabric, the graphite felt by this process may be constructed zinc iodine battery as electrode material.
Embodiment 2
Method is same as Example 1；
The No.1 formula of liquid of use is NH by volume3·H2O：H2O2：H2The ratio of O is 1:1:4, No. two formula of liquid be by
Volume ratio 1:1:6.
Using the graphite felt crossed by above-mentioned process, using 1M ZnI2 aqueous solutions as electrolyte, volume 1/ is added
10 alcohol, it (is 2 times of zinc iodide molal quantity, using cation-exchange membrane as diaphragm that a certain amount of iodine in addition, which is added, in anode.It adopts
It is protected with glass fabric, the graphite felt by this process may be constructed zinc iodine battery as electrode material.
Also, the circulation ability of this battery charging and discharging can also be up to thousands of times.This battery does not have overdischarge problem,
Because even after overdischarge, also it is easy to restore by current limiting pressure-limiting pattern, this is that most secondary cells are all not achieved.
Comparative example 1
Method is identical as embodiment 12；
The No.1 formula of liquid of use is NH by volume3·H2O：H2O2：H2The ratio of O is 1:1:4, No. two liquid select formula
It is HCl by volume:H2O2:H2The ratio of O is 1:2:8.
Comparative example 2
Method is same as Example 1；
The No.1 formula of liquid of use is NH by volume3·H2O：H2O2：H2The ratio of O is 1:2:5, No. two liquid select formula
It is HCl by volume:H2O2:H2The ratio of O is 1:1:6.
Using the graphite felt that process is crossed described in comparative example 1-2, with the identical conditions of embodiment 1-2, the zinc iodine of composition
The circulation ability of the charge and discharge of battery is poor.
The basic principles and main features of the present invention have been shown and described above.It should be understood by those skilled in the art that
The present invention is not limited to the above embodiments, and the above embodiments and description only illustrate the principle of the present invention,
Without departing from the spirit and scope, various changes and improvements may be made to the invention, these changes and improvements are all fallen
Enter in scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (5)
1. a kind for the treatment of process of graphite felt, it is characterised in that：Include the following steps：
(1) organics removal；Graphite felt is placed in 500-900 DEG C of temperature and is annealed 5-15 minutes；
(2) general impurity is removed；By step (1), treated that graphite felt is placed in No.1 liquid, and 5-10 is handled at a temperature of 70-80 DEG C
Minute, then cleaned 5-10 minutes with deionized water again；Next No. two liquid are used, 5-10 points are handled at a temperature of 70-80 DEG C
Then clock is cleaned 5-10 minutes with deionized water again；
(3) trace metal impurities of the difficult removal of removal；It will be placed in micro-wave oven through step (2) processed graphite felt and handle 5-15
Minute.
2. a kind for the treatment of process of graphite felt according to claim 1, it is characterised in that：The No.1 formula of liquid be by
Volume ratio NH3·H2O：H2O2：H2The ratio of O is 1:2:5；No. two formula of liquid are HCl by volume:H2O2:H2The ratio of O
Example is 1:2:8.
3. a kind for the treatment of process of graphite felt according to claim 1, it is characterised in that：The No.1 formula of liquid be by
Volume ratio NH3·H2O：H2O2：H2The ratio of O is 1:1:4, described No. two formula of liquid are by volume 1:1:6.
4. a kind for the treatment of process of graphite felt according to claim 1, it is characterised in that：In step (3), the microwave
The power of stove is at least 700W, and the time is no less than 3 minutes.
5. the treatment process of one of the arbitrary graphite felts of claim 1-4, it is characterised in that：It is handled by above-mentioned technical process
Graphite felt can be used as electrode material, the making for zinc bromine or zinc iodine battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810289518.XA CN108615885A (en) | 2018-04-03 | 2018-04-03 | A kind of graphite felt treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810289518.XA CN108615885A (en) | 2018-04-03 | 2018-04-03 | A kind of graphite felt treatment process |
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| CN108615885A true CN108615885A (en) | 2018-10-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378487A (en) * | 2018-10-09 | 2019-02-22 | 华东师范大学 | Treatment method of graphite felt electrode material in zinc iodide battery |
| CN109546165A (en) * | 2018-12-13 | 2019-03-29 | 南开大学 | A kind of preparation method and application of zinc iodine solution galvanic battery carbon felt combination electrode material |
| CN112038593A (en) * | 2020-08-06 | 2020-12-04 | 北京航空航天大学 | Positive electrode material of zinc-polymer water system rechargeable battery and preparation method of low-temperature-resistant electrolyte thereof |
| CN113410478A (en) * | 2021-06-16 | 2021-09-17 | 中国科学技术大学 | Graphite felt composite electrode for zinc-iodine flow battery, and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136579A (en) * | 2011-01-30 | 2011-07-27 | 国网电力科学研究院武汉南瑞有限责任公司 | Modified method of graphite felt used for full-vanadium fluid flow battery electrode |
| CN103268946A (en) * | 2013-06-03 | 2013-08-28 | 大连交通大学 | Flow battery graphite felt electrode sintering modification treatment method |
| CN105197878A (en) * | 2015-06-23 | 2015-12-30 | 华东师范大学 | Preparation method for implementing electron field emission device by use of graphene |
| CN105742656A (en) * | 2014-12-11 | 2016-07-06 | 中国科学院大连化学物理研究所 | Zinc-iodine flow battery |
| CN206022528U (en) * | 2016-09-21 | 2017-03-15 | 中国科学院大连化学物理研究所 | A kind of zinc bromine single flow battery structure |
-
2018
- 2018-04-03 CN CN201810289518.XA patent/CN108615885A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136579A (en) * | 2011-01-30 | 2011-07-27 | 国网电力科学研究院武汉南瑞有限责任公司 | Modified method of graphite felt used for full-vanadium fluid flow battery electrode |
| CN103268946A (en) * | 2013-06-03 | 2013-08-28 | 大连交通大学 | Flow battery graphite felt electrode sintering modification treatment method |
| CN105742656A (en) * | 2014-12-11 | 2016-07-06 | 中国科学院大连化学物理研究所 | Zinc-iodine flow battery |
| CN105197878A (en) * | 2015-06-23 | 2015-12-30 | 华东师范大学 | Preparation method for implementing electron field emission device by use of graphene |
| CN206022528U (en) * | 2016-09-21 | 2017-03-15 | 中国科学院大连化学物理研究所 | A kind of zinc bromine single flow battery structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378487A (en) * | 2018-10-09 | 2019-02-22 | 华东师范大学 | Treatment method of graphite felt electrode material in zinc iodide battery |
| CN109546165A (en) * | 2018-12-13 | 2019-03-29 | 南开大学 | A kind of preparation method and application of zinc iodine solution galvanic battery carbon felt combination electrode material |
| CN112038593A (en) * | 2020-08-06 | 2020-12-04 | 北京航空航天大学 | Positive electrode material of zinc-polymer water system rechargeable battery and preparation method of low-temperature-resistant electrolyte thereof |
| CN113410478A (en) * | 2021-06-16 | 2021-09-17 | 中国科学技术大学 | Graphite felt composite electrode for zinc-iodine flow battery, and preparation method and application thereof |
| CN113410478B (en) * | 2021-06-16 | 2022-09-06 | 中国科学技术大学 | Graphite felt composite electrode for zinc-iodine flow battery, and preparation method and application thereof |
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Application publication date: 20181002 |