CN114054110A - Kit and method for testing HF content in electrolyte - Google Patents
Kit and method for testing HF content in electrolyte Download PDFInfo
- Publication number
- CN114054110A CN114054110A CN202111363469.8A CN202111363469A CN114054110A CN 114054110 A CN114054110 A CN 114054110A CN 202111363469 A CN202111363469 A CN 202111363469A CN 114054110 A CN114054110 A CN 114054110A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- kit
- indicator
- content
- testing
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
-
- 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
Abstract
The invention provides a kit and a method for testing the HF content in electrolyte. The kit comprises a screw bottle body, a threaded bottle cap, a rubber plug and a gasket, wherein the threaded bottle cap is provided with a hole; the kit adopts the double combination of the silica gel sealing ring and the rubber plug, has good sealing performance and less reagent amount, can realize field test, and avoids the environmental influence in the sampling process; retarding LiPF elimination using anhydrous ethanol-containing solvent6The reaction rate replaces the use of ice water and low-temperature transportation and storage, and the economic benefit is good; the electrolyte and the aqueous solvent are mutually soluble and not layered through formula adjustment, so that the reaction is ensured to be carried out completely; the indicator has narrow color change range, obvious end point color mutation, accurate and effective test result and better consistency; the test process is simple to operate, has low requirements on personnel and has strong applicability.
Description
Technical Field
The invention belongs to the field of batteries, and particularly relates to a kit and a method for testing the content of HF in electrolyte.
Background
The lithium ion electrolyte is a carrier for lithium ion transmission in the battery and generally consists of lithium salt and an organic solvent. The electrolyte plays a role in conducting ions between the positive electrode and the negative electrode of the lithium battery, and is a key guarantee for the lithium battery to obtain the advantages of high voltage, high specific energy and the like.
Trace HF in the electrolyte for lithium ion batteries has a great influence on the capacity, cycle life, and safety of the battery. The HF content must therefore be strictly monitored during the production, storage, transport and battery manufacturing of lithium ion battery electrolytes.
LiPF6Is the most important component of the electrolyte, and is easily dissolved in organic solvents such as water, low-concentration methanol, ethanol, acetone, carbonates and the like. Exposed to air or heated and rapidly decomposed by the action of water vapor to produce PF5Simultaneous LiPF6And H2O is very reactive to produce HF.
H2O+LiPF6＝POF3↑+LiF↓+2HF
PF5+H2O＝2HF+POF3↑
H2O+POF3↑＝PO2F+2HF
In view of the above, the electrolyte in the industry is used in a dry room (relative humidity RH% is less than or equal to 2%). When the HF content of the lithium ion electrolyte is measured, sampling is carried out in a low-temperature and low-humidity environment, then the lithium ion electrolyte is stored at a low temperature and sent to a low-temperature room for testing, and an ice water system (ice water mixture is 0 ℃) is used for slowing down LiPF at the low temperature during testing6The rate of reaction.
The ice water system test method has the following problems: the sampling and sample feeding processes have high requirements on the sample storage environment, and the sample is very easy to be polluted; ice acquisition is not easy; the requirement on testing personnel is high; the organic electrolyte and ice water are mixed to have a layering phenomenon, the reaction is not thorough, the titration end point is difficult to judge, and the deviation is caused to the HF content test result.
Disclosure of Invention
The invention aims to provide a kit for testing the content of HF in electrolyte, which comprises an electrolyte diluting solvent, an indicator and a reaction reagent, is used for on-site detection, has good sealing performance, and has good mutual dissolving effect of the electrolyte and the solvent in the titration process, and no layering phenomenon. The titration end point color is distinguished, so that the judgment is easy, and the HF content test result is more accurate and effective.
The method for testing the HF content in the electrolyte provided by the invention adopts the kit for detection, and the accuracy is high.
The specific technical scheme of the invention is as follows:
a kit for testing the content of HF in electrolyte comprises a screw bottle body, a threaded bottle cap, a rubber plug and a gasket.
The screw bottle body is made of an acid and alkali corrosion resistant transparent material, preferably a PE transparent material or a PP transparent material.
The threaded bottle cap is made of PE transparent materials or PP transparent materials.
The rubber plug is made of silica gel material;
the gasket is made of a silica gel material.
The rubber plug is used for sealing the bottle mouth of the screw bottle body;
set up the trompil on the screw thread bottle lid, when screw thread bottle lid was screwed up with the cooperation of screw bottle, the trompil position of screw thread bottle lid can expose the plug, and the syringe passes the plug through the trompil position and adds electrolyte to the bottle inside of kit, and in adding electrolyte reaction process, can guarantee detecting system's leakproofness. And the threaded bottle cap and the screw bottle body are screwed up through thread adaptation, so that certain pressure can be applied to the rubber plug, and the sealing effect is ensured.
When the screw bottle body and the screw bottle cap are screwed up through screw thread adaptation, a rubber plug and a gasket are arranged between the screw bottle cap and the screw bottle body, the gasket is arranged above a bottle opening of the screw bottle body, the rubber plug is arranged above the gasket, and the sealing performance of the kit is ensured through double-layer sealing of the rubber plug and the gasket.
The reagent box comprises an electrolyte diluting solvent, an indicator and a reaction reagent.
And a mixed solution consisting of the electrolyte diluting solvent, the indicator and the reaction reagent is placed in the screw bottle body.
The electrolyte diluting solvent comprises pure water and an organic solvent;
the volume of the pure water accounts for 70-90%;
the organic solvent is absolute ethyl alcohol or ethyl acetate;
the volume of the absolute ethyl alcohol accounts for 10-30%.
Preferably, the electrolyte diluting solvent includes 80% by volume of pure water and 20% by volume of absolute ethanol.
The indicator is a methyl red-bromocresol green mixed indicator and is prepared by adopting a volume ratio of a methyl red solution with the concentration of 1g/L to a bromocresol green solution with the concentration of 2g/L according to a ratio of 3: 1;
the reaction reagent is NaOH solution or KOH solution, and the concentration is 0.01 mol/L; by the principle of back titration of the alkali solution by the electrolyte, the electrolyte can be directly tested on site.
The diluting solvent containing ethanol in the kit provided by the invention not only can ensure that the mutual dissolving effect of the electrolyte and the solvent is good and the electrolyte and the solvent are not layered, but also plays a role in buffering in the whole system and slows down LiPF6The reaction rate is high, and the aim of eliminating ice water is fulfilled.
The volume ratio of the electrolyte diluting solvent to the indicator to the reaction reagent is 20:0.1-0.2: 1.
A method for testing the content of HF in electrolyte by using the kit comprises the following steps:
1) the kit containing the electrolyte dilution solvent, indicator and reaction reagent was weighed and recorded as m0；
2) Absorbing electrolyte to be tested by using an injector, puncturing a rubber plug of the kit by using the injector, adding the electrolyte into the solution of the kit, and stopping injecting the electrolyte when the color of the solution in the kit is changed from green to light red in a sudden change manner, whereinThe total weight of the kit, denoted m1；
3) And calculating the HF content in the electrolyte.
In the step 2), adding the electrolyte while shaking the kit to ensure full reaction.
The reagent kit itself contains an electrolyte diluting solvent, an indicator and a reaction reagent, and is green in color, and the weight of the reagent kit is m0(ii) a Then adding electrolyte into the reagent box, and stopping changing the color from green to light red, wherein the end point is the titration end point, and the total weight is m1。m1-m0Is the weight of the electrolyte that participates in the reaction.
The formula for calculating the HF content in the electrolyte is as follows:
in the formula:
C0represents the concentration of the reaction reagent added into the kit, and the unit is mol/L;
v represents the volume of the reaction reagent added into the kit, and the unit is mL;
the molar mass of HF is 20.008 g/mol;
m0represents the weight of the kit, in g,
m1represents the total weight of the kit after titration of the electrolyte in g.
The acid-base titration principle:
in the kit, pure water plays roles of diluting and dissolving in the whole system, and meanwhile, the acidity of the whole titration system is not changed; the ethanol plays a role in buffering, promotes mutual solubility between the electrolyte and the diluent, and ensures that the electrolyte and the pure water are not layered; reaction reagent NaOH solution or KOH solution provides OH-With H in HF-The reaction is carried out. The methyl red-bromocresol green indicator has narrow color change range and pH>Blue-green at 5.2; pH value<And light red at 4.6.
In the kit, the mixed solution of the newly-configured electrolyte diluting solvent, the indicator and the reaction reagent is directly sealed in the kit, and the kit is brought to the site, so that the electrolyte can be directly tested on the site (the relative humidity RH percent is less than or equal to 2%) after being sampled, ice water cooling is not needed, and the sample sending process is cancelled, thereby avoiding environmental influence; the mutual dissolving effect of the electrolyte and the solvent is better in the titration process, and the layering phenomenon cannot occur. The titration end point color is distinguished, the judgment is easy, and the HF content test result is more accurate and effective. Moreover, the kit disclosed by the invention not only adopts the gasket, but also can better seal the screw bottle body and the threaded bottle cap; the bottle mouth is sealed by the rubber plug, the mixed solution in the screw bottle body is isolated from the outside, the adopted threaded bottle cap is provided with the opening, the exposed rubber plug can be directly punctured with an injection agent when being detected to add the electrolyte to be detected, the threaded bottle cap is not required to be unscrewed to add the electrolyte, the influence of environmental factors on reaction in the detection reaction process is ensured, and the detection accuracy is kept.
Compared with the prior art, the kit disclosed by the invention adopts the double combination of the silica gel sealing ring and the rubber plug, so that the sealing property is good, the reagent amount is small, the field test can be realized, and the environmental influence in the sampling process is avoided; retarding LiPF elimination using anhydrous ethanol-containing solvent6The reaction rate replaces the use of ice water and low-temperature transportation and storage, and the economic benefit is good; the electrolyte and the aqueous solvent are mutually soluble and not layered through formula adjustment, so that the reaction is ensured to be carried out completely; the indicator has narrow color change range, obvious end point color mutation, accurate and effective test result and better consistency; the test process is simple to operate, has low requirements on personnel and has strong applicability.
Drawings
FIG. 1 shows the delamination of the test results of comparative example 1;
FIG. 2 shows the titration process of the experimental results of comparative example 2, the color does not conform to the indicator color change range;
FIG. 3 is a schematic structural diagram of the kit of the present invention;
FIG. 4 is a schematic structural view of a threaded bottle cap of the kit of the present invention;
in the figure, 1 is a screw bottle body, 2 is a gasket, 3 is a rubber plug, 4 is a threaded bottle cap, and 5 is an opening.
Detailed Description
Comparative example 1(NaOH titration electrolyte-diluting solvent ratio 100% ice water)
A method of testing the HF content of an electrolyte comprising the steps of:
1) preparing a diluting solvent: putting ice blocks and pure water with the same volume into a beaker, and waiting for 20min to ensure that the water temperature is about 0 ℃;
2) sample weighing: adding 20mL of ice water into a conical flask, adding 0.1mL of methyl red-bromocresol green indicator, placing on a balance, peeling, returning to zero, adding the electrolyte until the solution is red, and recording the weight m of the electrolyte0；
3) NaOH titration: filling the burette with a volume V10.01moL/L NaOH solution, dropping into a conical flask filled with electrolyte, stopping when the solution turns from red to dark green, and recording the volume V of the burette at the moment2；
4) And (4) observation: observing the titration phenomenon and the indicator color change;
by using a testing method of an ice water method, the solution after titration has slow color reversion and does not fade within 30 s; however, the electrolyte and ice water are layered in the whole titration process, and the color of the titration end point is difficult to judge.
Comparative example 2(NaOH titration electrolyte-diluting solvent ratio of 100% ethanol)
A method of testing the HF content of an electrolyte comprising the steps of:
1) preparing a diluting solvent: preparing absolute ethyl alcohol;
2) sample weighing: adding 20mL of ethanol into a conical flask, adding 0.1mL of methyl red-bromocresol green indicator, placing on a balance, peeling, returning to zero, adding electrolyte, and recording the weight m of the electrolyte0；
3) NaOH titration: filling the burette with a volume V10.01moL/L NaOH solution, dropping into a conical flask filled with electrolyte, stopping when the solution turns from red to dark green, and recording the volume V of the burette at the moment2；
4) And (4) observation: observing the titration phenomenon and the indicator color change;
when the proportion of the diluting solvent is 100% ethanol, the phenomenon of layering between the electrolyte and the diluting solvent is not generated in the processes of adding the electrolyte and titrating, but the color of the added electrolyte is not red but orange, which is not in accordance with the color change of the indicator, and the terminal point mutation is not obvious, so that the technical index is not realized.
Example 1
A kit for testing the content of HF in electrolyte comprises a screw bottle body 1, a threaded bottle cap 4, a rubber plug 3 and a gasket 2. The structure schematic diagram is shown in fig. 3.
The screw bottle body 1 is made of PE transparent material.
The threaded bottle cap 4 is made of PE transparent material.
The rubber plug 3 is made of silica gel material;
the gasket 2 is made of silica gel.
The rubber plug 2 is used for sealing the bottle mouth of the screw bottle body 1;
set up trompil 5 on the screw cap 4, when screw cap 4 was screwed up with the cooperation of screw bottle 1, the trompil position of screw cap 4 can expose plug 3, and the syringe passes the plug through the trompil position and adds electrolyte to the bottle inside of kit, and in adding electrolyte reaction process, can guarantee detecting system's leakproofness. The threaded bottle cap 4 and the threaded bottle body 1 are screwed up through thread adaptation, so that certain pressure can be applied to the rubber plug 3, and the sealing effect is ensured.
When screw bottle 1 and screw bottle lid 4 were screwed up through the screw thread adaptation, be provided with plug 3 and packing ring 2 between screw bottle lid 4 and the screw bottle 1, packing ring 2 sets up in the bottleneck top of screw bottle 1, plug 3 sets up in packing ring 2 top, and through plug 3 and 2 double-deck sealings of packing ring, guarantee the leakproofness of kit.
Preparing an electrolyte diluting solvent by adopting pure water with the volume ratio of 80% and ethanol with the volume ratio of 20%, and preparing 10mL of the freshly prepared electrolyte diluting solvent and 0.1mL of a methyl red solution with the concentration of 1g/L and a bromocresol green solution with the concentration of 2g/L according to the volume ratio of 3:1Placing the mixed solution of the methyl red-bromocresol green indicator and 0.5mL0.01mol/L NaOH solution into a screw bottle body 1, quickly placing a gasket 2 above the bottle mouth of the screw bottle body 1, sealing the bottle mouth of the screw bottle body by using a rubber plug 3, and finally screwing a threaded bottle cap 4 with an opening 5, wherein the obtained kit is accurately weighed, and the mass is m at the moment0。
The method for testing the HF content in the electrolyte by using the kit comprises the following steps of (electrolyte titration NaOH solution-kit method for testing the HF content in the electrolyte)
And (3) electrolyte titration: in a drying room, the relative humidity RH percent is less than or equal to 2 percent, after the electrolyte to be measured is absorbed by an injector, the injector pierces a rubber plug to inject the electrolyte to be measured into a reagent box through the position of a hole 5 on a threaded bottle cap 4, the injector needle head injects the electrolyte to be measured while shaking, the injection is stopped when the color in the reagent box is changed from green to light red, the total weight m of the reagent box and the electrolyte participating in the titration reaction is accurately weighed1；
The HF content in the electrolyte was calculated by the following formula:
wherein 0.5 represents the volume of NaOH solution added into the kit in unit mL; 0.01 represents the concentration of NaOH solution added into the kit, and the unit is mol/L; the molar mass of HF is 20.008g/mol, m0Represents the weight of the kit, unit g, m1Represents the total weight of the kit and the electrolyte participating in the reaction, in g.
The reagent kit is used for testing the electrolyte to perform back titration, repeatability and reproducibility verification, and the result is as follows;
pure water with the volume ratio of 80% and 20% ethanol are used as diluting solvents, the solution after titration has slow color reversion, and the color is not deepened within 30 s; and the color of the indicator is changed under the preset pH value, and the layering phenomenon does not occur between the electrolyte and the diluting solvent, so that the technical index of testing HF by the electrolyte can be realized.
And (3) carrying out back titration verification: the relative deviation between the data of the content of HF in the electrolyte measured by using the kit and the result of the titration of the electrolyte by using the NaOH solution is less than 2 percent, the test method has high feasibility and ensures the effectiveness. The results are shown in Table 1.
Table 1 example 1 back titration experiment
And (3) repeatability verification: the sample 1 is tested 6 times by using the kit under the same condition, the relative standard deviation of the test result is 1.82%, the test result is less than 5%, the test method is high in feasibility, and the effectiveness is guaranteed. The results are shown in Table 2.
Table 2 example 1 repeatability verification
And (3) verifying the reproducibility: different personnel use the kit to test the sample 1 for 6 times, the relative standard deviation of the test result is 1.88 percent, the test result is less than 5 percent, the test method has high feasibility and the effectiveness is ensured.
Claims (10)
1. A kit for testing the content of HF in electrolyte is characterized by comprising a screw bottle body, a threaded bottle cap, a rubber plug and a gasket;
the screw bottle body is made of an acid-base corrosion resistant transparent material;
the reagent box comprises an electrolyte diluting solvent, an indicator and a reaction reagent; the electrolyte diluting solvent includes pure water and an organic solvent.
2. The kit of claim 1, wherein said purified water is 70-90% by volume.
3. The kit according to claim 1 or 2, wherein the organic solvent is absolute ethanol or ethyl acetate.
4. The kit of claim 1 or 2, wherein the indicator is a methyl red-bromocresol green mixed indicator.
5. The kit according to claim 1 or 2, wherein the reaction reagent is NaOH solution or KOH solution.
6. The kit according to claim 1 or 2, wherein the screw bottle is made of a PE transparent material or a PP transparent material.
7. The kit according to claim 1 or 2, wherein the plug is a silica gel material; the gasket is made of a silica gel material.
8. The kit of claim 1 or 2, wherein the screw cap is provided with an opening.
9. A method for testing the HF content of an electrolyte, characterized in that the detection is carried out using a kit according to any one of claims 1 to 8.
10. The method of claim 9, wherein the detection method is specifically:
1) the kit containing the electrolyte dilution solvent, indicator and reaction reagent was weighed and recorded as m0；
2) Absorbing electrolyte to be tested by using an injector, piercing a rubber plug of the kit by using the injector, adding the electrolyte into the solution of the kit, stopping injecting the electrolyte when the color of the solution in the kit is changed from green to light red in a sudden change manner, and marking the total weight of the kit as m1；
3) And calculating the HF content in the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111363469.8A CN114054110B (en) | 2021-11-17 | 2021-11-17 | Kit and method for testing HF content in electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111363469.8A CN114054110B (en) | 2021-11-17 | 2021-11-17 | Kit and method for testing HF content in electrolyte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114054110A true CN114054110A (en) | 2022-02-18 |
| CN114054110B CN114054110B (en) | 2022-10-11 |
Family
ID=80277443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111363469.8A Active CN114054110B (en) | 2021-11-17 | 2021-11-17 | Kit and method for testing HF content in electrolyte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114054110B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614406A (en) * | 2004-11-29 | 2005-05-11 | 华南师范大学 | Quantitatively analyzing method for fluohydric acid in lithium ion battery electrolyte |
| US20050227368A1 (en) * | 2003-05-20 | 2005-10-13 | Eric Ezan | Method for the detection of fluoride or hydrogen fluoride and detection kit |
| US20070065825A1 (en) * | 2003-07-10 | 2007-03-22 | Patrick Stordeur | Device, kit and method for pulsing biological samples with an agent and stabilising the sample so pulsed |
| JP2010060511A (en) * | 2008-09-05 | 2010-03-18 | Sumika Chemical Analysis Service Ltd | Method of quantitatively determining hydrogen fluoride, and method of evaluating electrolyte |
| JP2010153289A (en) * | 2008-12-26 | 2010-07-08 | Toyota Motor Corp | Method of measuring amount of hf in electrolytic solution and method of manufacturing lithium ion secondary battery |
| US20130168264A1 (en) * | 2011-12-28 | 2013-07-04 | Soulbrain Co., Ltd. | Method for Measuring HF Content in Lithium Secondary Battery Electrolyte and Analytical Reagent Composition Used in the Same |
| US20140349870A1 (en) * | 2011-11-04 | 2014-11-27 | President And Fellows Of Harvard College | Self-regulating chemo-mechano-chemical systems |
| CN105158407A (en) * | 2015-10-09 | 2015-12-16 | 天津市捷威动力工业有限公司 | Method for measuring HF content of electrolyte containing LiBOB |
| US20160164140A1 (en) * | 2013-07-09 | 2016-06-09 | Ube Industries, Ltd. | Non-aqueous electrolytic solution kit and method of preparing non-aqueous electrolytic solution |
| CN107356703A (en) * | 2017-07-03 | 2017-11-17 | 宁德市凯欣电池材料有限公司 | A kind of electrolyte acid number detection method |
| CN108226374A (en) * | 2017-12-21 | 2018-06-29 | 珠海市赛纬电子材料股份有限公司 | A kind of assay method of the free acid content of the electrolyte containing special additive |
| CN207798767U (en) * | 2017-10-13 | 2018-08-31 | 广州无两生物科技有限公司 | A kind of simple gas density measuring device |
| CN208894251U (en) * | 2018-10-11 | 2019-05-24 | 杭州职业技术学院 | A kind of liquid chromatograph sample introduction chromatogram bottle |
| US20190302071A1 (en) * | 2016-07-21 | 2019-10-03 | Lonza Inc. | Method and Kit for Determining Peracetic Acid Concentration in Disinfectant Solutions |
| CN111505200A (en) * | 2020-03-20 | 2020-08-07 | 衢州康鹏化学有限公司 | Method for detecting trace free acid in electrolyte additive |
| CN111855650A (en) * | 2020-07-30 | 2020-10-30 | 青岛科技大学 | Method for determining content of fluosilicic acid, hydrofluoric acid and nitric acid in etching acid |
| US20210220795A1 (en) * | 2018-05-30 | 2021-07-22 | Hangzhou Inspired Biotechnology Inc. | Disposable reaction device, tracer synthesizer and method for producing tracers |
-
2021
- 2021-11-17 CN CN202111363469.8A patent/CN114054110B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050227368A1 (en) * | 2003-05-20 | 2005-10-13 | Eric Ezan | Method for the detection of fluoride or hydrogen fluoride and detection kit |
| US20070065825A1 (en) * | 2003-07-10 | 2007-03-22 | Patrick Stordeur | Device, kit and method for pulsing biological samples with an agent and stabilising the sample so pulsed |
| CN1614406A (en) * | 2004-11-29 | 2005-05-11 | 华南师范大学 | Quantitatively analyzing method for fluohydric acid in lithium ion battery electrolyte |
| JP2010060511A (en) * | 2008-09-05 | 2010-03-18 | Sumika Chemical Analysis Service Ltd | Method of quantitatively determining hydrogen fluoride, and method of evaluating electrolyte |
| JP2010153289A (en) * | 2008-12-26 | 2010-07-08 | Toyota Motor Corp | Method of measuring amount of hf in electrolytic solution and method of manufacturing lithium ion secondary battery |
| US20140349870A1 (en) * | 2011-11-04 | 2014-11-27 | President And Fellows Of Harvard College | Self-regulating chemo-mechano-chemical systems |
| US20130168264A1 (en) * | 2011-12-28 | 2013-07-04 | Soulbrain Co., Ltd. | Method for Measuring HF Content in Lithium Secondary Battery Electrolyte and Analytical Reagent Composition Used in the Same |
| US20160164140A1 (en) * | 2013-07-09 | 2016-06-09 | Ube Industries, Ltd. | Non-aqueous electrolytic solution kit and method of preparing non-aqueous electrolytic solution |
| CN105158407A (en) * | 2015-10-09 | 2015-12-16 | 天津市捷威动力工业有限公司 | Method for measuring HF content of electrolyte containing LiBOB |
| US20190302071A1 (en) * | 2016-07-21 | 2019-10-03 | Lonza Inc. | Method and Kit for Determining Peracetic Acid Concentration in Disinfectant Solutions |
| CN107356703A (en) * | 2017-07-03 | 2017-11-17 | 宁德市凯欣电池材料有限公司 | A kind of electrolyte acid number detection method |
| CN207798767U (en) * | 2017-10-13 | 2018-08-31 | 广州无两生物科技有限公司 | A kind of simple gas density measuring device |
| CN108226374A (en) * | 2017-12-21 | 2018-06-29 | 珠海市赛纬电子材料股份有限公司 | A kind of assay method of the free acid content of the electrolyte containing special additive |
| US20210220795A1 (en) * | 2018-05-30 | 2021-07-22 | Hangzhou Inspired Biotechnology Inc. | Disposable reaction device, tracer synthesizer and method for producing tracers |
| CN208894251U (en) * | 2018-10-11 | 2019-05-24 | 杭州职业技术学院 | A kind of liquid chromatograph sample introduction chromatogram bottle |
| CN111505200A (en) * | 2020-03-20 | 2020-08-07 | 衢州康鹏化学有限公司 | Method for detecting trace free acid in electrolyte additive |
| CN111855650A (en) * | 2020-07-30 | 2020-10-30 | 青岛科技大学 | Method for determining content of fluosilicic acid, hydrofluoric acid and nitric acid in etching acid |
Non-Patent Citations (1)
| Title |
|---|
| 左晓希: ""锂离子蓄电池电解液中氢氟酸的定量分析"", 《电源技术测试与分析》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114054110B (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105973666A (en) | Chlorine and sulfur extraction and determination method and apparatus thereof | |
| CN106289433B (en) | Method for measuring volume of each component gas in secondary battery | |
| CN102868003A (en) | Device and method for detecting internal gas pressure of lithium ion battery | |
| CN201188018Y (en) | Aerogenesis collection and detection apparatus within lithium ion battery | |
| CN204269595U (en) | For the monitoring device of volatile organic matter concentration in continuous on-line detection water | |
| CN114054110B (en) | Kit and method for testing HF content in electrolyte | |
| CN102183345B (en) | Sodium sulfur battery pressing and leakage detection device and using method | |
| CN110057896A (en) | The analysis method of content of fluoride in a kind of hazardous waste | |
| CN109870490A (en) | The measuring method of free acid content in lithium salts and its electrolyte | |
| CN104049067B (en) | A kind of method measuring inorganic salts in lithium battery electrolytes | |
| CN112461637A (en) | Standard oil sample automatic quantitative mixer for detecting dissolved gas in oil on-line monitoring device and standard oil sample configuration method | |
| CN208206546U (en) | A kind of sampler convenient for Locale Holding water sample | |
| CN103592300A (en) | Method of measuring respiration intensity of fresh fruits and vegetables by titrimetric analysis | |
| CN103674756A (en) | Method for measuring content of moisture in high pressure liquid phase hydrocarbon substance | |
| CN111505200A (en) | Method for detecting trace free acid in electrolyte additive | |
| CN103116046A (en) | Preparation method for absorbing mixed fused salt carbon felt electrodes | |
| CN114184445B (en) | Method for measuring content of residual metal element in OLED material | |
| CN104730071A (en) | Reactive extraction colorimetric device and measuring method for measuring boric acid content in water-based adhesive | |
| CN201945558U (en) | Simple device for measuring sulfur dioxide content in air | |
| CN204924951U (en) | Plumbous quick detect reagent box of trace heavy metal | |
| CN211825892U (en) | Simple separation device for SO2 and CO2 mixed gas | |
| CN207163843U (en) | A kind of easy device of gas method measure soil calcium carbonate content | |
| CN202041304U (en) | Temperature sensor for simulating blood plasma by fully-closed glycerin solvent bottle | |
| CN206725312U (en) | Stable carbon isotope apparatus for pre-analysis treatment in the carbonate dissolved in a kind of water body | |
| CN203400145U (en) | Device used for detecting oxygen consumption of animals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |