CN109884037A - A method of nickel, cobalt and manganese ratio in measurement ternary material NCM - Google Patents
A method of nickel, cobalt and manganese ratio in measurement ternary material NCM Download PDFInfo
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Abstract
The invention discloses a kind of methods of nickel, cobalt and manganese ratio in measurement ternary material NCM.The present invention is using nickel, cobalt and manganese ratio in ICP Instrument measuring solution to be measured, comprising the following steps: three standard points are prepared in the preparation of standard solution；First standard point standard solution STD1, metal ion total concentration are controlled in 120-200mg/L；Second standard point standard solution STD2, the control of metal ion total concentration are controlled in 230-320mg/L, third standard point standard solution STD3, metal ion total concentration in 330-390mg/L；The metal ion is the metal ion of nickel, cobalt and manganese.The present invention surveys nickel, cobalt, manganese ratio only with ICP, and therefore, for weighing, constant volume, the operation such as to pipette of less demanding, facilitates and operates and accelerate material pre-treatment operating process.Measuring method of the invention eliminates internal standard yttrium relative to existing professional standard, has not only eliminated cumbersome operation, but also does not influence the stability of test result.
Description
Technical field
The invention belongs to the detection and analysis field of lithium battery material, specifically a kind of quick, stable measurement ternary material
The method for expecting nickel, cobalt and manganese ratio in NCM, NCM Compound mixed solution, ternary suitable for ternary precursor synthesis blending process
The detection and analysis of presoma and tertiary cathode material.
Background technique
With the fast development of new energy technology, the application of lithium battery is also more and more extensive.Simultaneously as present people couple
Increasingly pay attention in environmental protection, the states such as every Western Europe country, Japan, India, the U.S., China have made fuel vehicle exit time table, will
Replace fuel power vehicle with new energy power car.
Nickle cobalt lithium manganate (NCM series) anode material for lithium-ion batteries, has specific capacity height, discharge voltage range wide, electric
Stable chemical performance, the advantages that having a safety feature, occupy critically important ratio, it has also become dynamic lithium battery in lithium battery material
Preferred positive electrode in material.Therefore, the lithium battery material of NCM series will welcome the rapid development history of production capacity fast lifting
Opportunity.
The ratio of nickel, cobalt, manganese in material has extremely important NCM series anode material of lithium battery chemical property
Influence.Therefore, nickel, cobalt, manganese ratio in NCM material are that each NCM presoma producer, positive electrode producer pay special attention to
Index.Therefore find it is a kind of quickly, stablize nickel in measurement NCM material, cobalt, manganese ratio method, it has also become present lithium from
Sub- battery industry enterprise there is an urgent need to.
For nickel, cobalt, manganese ratio, traditional method is first individually to measure nickel, cobalt, manganese in material using conventional chemistry
Then content calculates ratio again；Therefore it needs by conventional chemical analysis three times, measurement analysis spent time is long；Also, due to
Mutually there is interference between manganese in nickel, cobalt, influence the accuracy of conventional chemical analysis, therefore the stabilization of nickel, cobalt, manganese ratio measuring
Property, reproducibility are bad.
Currently, Industry methods carry out nickel, cobalt, manganese exposure in NCM ternary material using ICP method, but Industry methods are direct
Test nickel, cobalt, manganese each element real content, test there are larger difficulty, need to carry out test correction using internal standard yttrium, simultaneously
It also needs to prepare higher concentration standard solution, and a set of standard solution can only test a type of NCM material.
Summary of the invention
The technical problem to be solved by the present invention is to overcome nickel in existing NCM material, cobalt, manganese content test analysis institute time-consuming
Between long, stability is poor, reproducibility is bad etc. disadvantage, provide it is a kind of quickly, stablize nickel, cobalt and manganese in measurement ternary material NCM
The method of ratio as much as possible reduces operating procedure, shortens detection time, meanwhile, the stability of detection is improved, is very suitable to
On a large scale, the needs of serialization industrial production analysis.
For this purpose, the present invention adopts the following technical scheme that: a kind of side measuring nickel, cobalt and manganese ratio in ternary material NCM
Method uses nickel, cobalt and manganese ratio in ICP Instrument measuring solution to be measured, method includes the following steps:
1) three standard points are prepared in the preparation of standard solution；First standard point standard solution STD1, metal ion are always dense
Degree control is at 120-200mg/L (preferably 160-200mg/L)；Second standard point standard solution STD2, metal ion are always dense
Degree is controlled in 230-320mg/L (preferably 250-300mg/L), third standard point standard solution STD3, and metal ion is always dense
Degree control is in 330-390mg/L；The metal ion is the metal ion of nickel, cobalt and manganese；
2) appropriate adjustment sample weighting amount, constant volume and volume is pipetted, marks nickel in solution to be measured, cobalt and manganese concentration at three
Within on schedule；
3) during the test, by controlling test condition, ICP instrument test is made to be in stable state；It is required that standard is molten
Nickel in liquid, cobalt, three element of manganese linearly dependent coefficient be all larger than 0.9999；Meanwhile every one section of fixed testing time, it is desirable that
Test a QC management sample, it is desirable that the nickel of QC management sample, cobalt, manganese percent value fluctuate within 0.20% above and below known numeric value,
The sum of nickel, cobalt, manganese percent value are 100%；
4) when sample test, it is desirable that survey two Duplicate Samples, very poor between Duplicate Samples test result is not more than 0.25%；
5) after standard curve is qualified, after QC management sample is also met the requirements, illustrates that instrument is in stable state, start to survey
Test agent, while requiring between two parallel samples, nickel, cobalt, manganese the very poor of percent value be all not more than 0.25%；Every one section
Fixed testing time, test QC manage sample；QC manages effective sample tests between sample test passes just now twice for front and back
It is qualified.
The present invention, referring to professional standard, prepares three standard points, but solution concentration is industry in preparing standard solution
The half of standard.Due to the solution concentration that debases the standard, reduce matrix effect, a set of standard solution can test several components phase
Like nickel cobalt manganese (NCM) material (referred to as are as follows: NCM material) of type, the workload of standard solution preparation is greatly reduced, it is very suitable
Close Industrial Analysis test.
For the stability for guaranteeing test result, invention increases QC to manage sample, in practice it has proved that, QC manages sample than internal standard yttrium
The stability of test result can more be effectively ensured.
For the stability for being further ensured that test, can further requirement, nickel, cobalt, manganese standard solution curve linear correlation
Up to 0.9999 or more；Secondly, managing sample every one section of fixed testing time test QC, QC management sample test result has to comply with rule
Fixed requirement；Again, sample test requirement, the test of two Duplicate Samples is very poor also must be within the scope of regulation.
Since present invention does not require the real content of the nickel directly measured in material, cobalt, manganese, emphasis point is steadily to measure
The ratio of nickel, cobalt, manganese in material, thus when instrument performance fluctuates, nickel, cobalt, manganese increase simultaneously, or reduce simultaneously, and hundred
Ratio substantially constant is divided therefore to eliminate internal standard yttrium.By experiment, because only surveying nickel, cobalt, manganese ratio, internal standard yttrium is stablized
Property effect very little；And internal standard yttrium is eliminated, sample preparation speed can be greatly speeded up.
As described above, emphasis of the invention be can steadily in test material nickel, cobalt, manganese percent value, be not
The real content of material nickel, cobalt, manganese, therefore, for weighing, constant volume, the operation such as to pipette of less demanding, wants to the operation of lab technician
It asks not high, had not only facilitated operation, but also greatly accelerate test speed.
Further, metal ion total concentration is controlled in 170-200mg/L in first standard point standard solution STD1,
In, the concentration control of nickel is in 110-120mg/L, and in 25-35mg/L, the concentration of manganese is controlled in 35-45mg/L for the concentration control of cobalt；
The control of metal ion total concentration is in 260-290mg/L in second standard point standard solution STD2, wherein the concentration control of nickel exists
145-155mg/L, in 40-50mg/L, the concentration of manganese is controlled in 75-85mg/L for the concentration control of cobalt；Third standard point standard
The control of metal ion total concentration is in 350-380mg/L in solution S TD3, wherein the concentration of nickel is controlled in 185-195mg/L, cobalt
Concentration control is controlled in 70-80mg/L, the concentration of manganese in 95-105mg/L.
Further, ICP instrument measures sample, QC manages nickel, cobalt, manganese concentration in sample and is converted by following equation
Nickel, cobalt, manganese percent value:
In formula: Ni%-obtains the percent value of nickel in sample by calculating；
Co%-obtains the percent value of cobalt in sample by calculating；
Mn%-obtains the percent value of manganese in sample by calculating；
ρNi- instrument measures the concentration of nickel in sample, unit mg/L；
ρCo- instrument measures the concentration of cobalt in sample, unit mg/L；
ρMn- instrument measures the concentration of manganese in sample, unit mg/L；
The molal weight of 58.69-nickel, unit g/mol；
The molal weight of 58.93-cobalts, unit g/mol；
The molal weight of 54.94-manganese, unit g/mol.
Further, the ternary material NCM include but is not limited to H955, H811, H622, H523, H211, H424,
H325, H111, copper content are not more than 0.0050%, and iron content is not more than 0.0100%, and Zn content is not more than 0.0050%, and calcium contains
Amount is not more than 0.0150%, and content of magnesium is not more than 0.0150%, and silicone content is not more than 0.0300%, and aluminium content is not more than
0.0050%.
Further, ICP instrument line spectrum selects: nickel is 221.039 wavelength/nm, cobalt is 201.15 wavelength/nm, manganese is
191.447 wavelength/nm；The parameter setting of ICP instrument: RF power is 1300W, plasma (orifice) gas 15L/min, and auxiliary gas is
0.4L/min, atomization gas 0.7L/min, sample introduction pump speed are 1.5L/min, and observed pattern is radial.
The beneficial effects of the present invention are the following aspects:
1, due to surveying nickel, cobalt, manganese ratio only with ICP, for weighing, constant volume, the operation such as to pipette of less demanding,
Facilitate and operates and accelerate material pre-treatment operating process.
2, standard solution of the invention, relative to present professional standard, eliminates internal standard yttrium, both saved in test
Cumbersome operation has been gone, and has not influenced the stability of test result.
3, the present invention is the stability for guaranteeing test result, increases QC management sample, in practice it has proved that, QC management sample compares internal standard
The stability of test result can be more effectively ensured in yttrium.
4, the present invention is guarantees the stability tested, using the stability of a variety of method monitoring instruments；Firstly, nickel, cobalt, manganese
Standard solution curve linear correlation is up to 0.9999 or more；Secondly, test QC manages sample at regular intervals, QC manages sample test
As a result defined requirement is had to comply with；Again, sample test requirement, two Duplicate Samples test it is very poor also must defined range with
It is interior.
5, in newest professional standard, a set of standard solution can only test a seed type NCM material；And the present invention passes through
Debase the standard solution concentration, reduces matrix effect, to reach the close NCM material of a set of standard solution test several materials component
Material, hence it is evident that reduce the intensity of preparing standard solution；Meanwhile in ICP test process, and significantly reduce the survey of standard curve
Number is tried, test speed is accelerated, greatly meets extensive, the industrial needs of serialization.
Specific embodiment
The present invention enumerate 4 kinds of components it is close comprising nickel cobalt manganese NCM material, by acid resolution, be prepared into qualified test solution,
Carry out the test of nickel, cobalt, manganese ratio.
Sample test solution preparation such as following table one in specific embodiment:
Table a sample tests solution allocation
| NCM material type | Sample weighting amount/g | Constant volume/mL | Pipette volume/mL | Twice fixed volume volume/mL |
| 523 (embodiments 1) | 1.2 | 200.0 | 20.00 | 250.0 |
| 211 (embodiments 2) | 1.1 | 200.0 | 20.00 | 250.0 |
| 622 (embodiments 3) | 1.0 | 200.0 | 20.00 | 250.0 |
| 65:15:20 (embodiment 4) | 1.1 | 200.0 | 20.00 | 250.0 |
It is with Optima8000 inductive coupling plasma emission spectrograph (platinum Elmer Co., Ltd) during the test
Example is illustrated feasibility of the invention；When choice of spectrum, select waveform is complete, between coexistence elements without spectra1 interfer-, intensity
Analytical line of the moderate spectral line as element to be measured.With reference to professional standard, nickel, cobalt, manganese constituent content to be measured are higher in sample,
To select based on subsensitive line, while internal standard yttrium is eliminated again, therefore the spectral line such as following table two that the present invention selects:
The selection of two line spectrum of table
| Element | Nickel | Cobalt | Manganese |
| Wavelength/nm | 221.039 | 201.15 | 191.447 |
Instrument parameter setting can refer to following table three:
Three instrument parameter of table
For the stability for guaranteeing test result, nickel in standard solution system, cobalt, 3 element of manganese are required in test process
Linearly dependent coefficient is all larger than 0.9999；Meanwhile every one section of fixed testing time, it is desirable that one QC of test manages sample, it is desirable that
The QC management nickel of sample, cobalt, manganese percent value fluctuate within 0.20% that (the sum of nickel, cobalt, manganese percent value are above and below known numeric value
100%).
After standard curve is qualified, QC management sample is also met the requirements, the test can be started sample, and require two Duplicate Samples
Between product, nickel, cobalt, manganese percent value it is very poor all be not more than 0.25%, sample tests, which are just calculated, effectively (not to be met and wants
It asks, needs to readjust instrument, instrument is made to be in stable state).
It is spaced every one section, test QC manages sample.QC manages effective sample test between sample test passes twice for front and back
As a result it is qualified just to calculate, and test result just can be used.
The invention will be further described with reference to embodiments.Reagent used in embodiment are as follows:
1) concentrated nitric acid (ρ=1.42g/mL).
2) concentrated hydrochloric acid (ρ=1.19g/mL).
3) hydrochloric acid (1+1) measures the volume ratio of water and hydrochloric acid as 1:1 configuration.
4) nitric acid (1+1) measures the volume ratio of water and nitric acid as 1:1 configuration.
5) it nickel typical shelf solution: weighs 7.5000g pure nickel (purity is greater than 99.99%) and is placed in 500mL beaker, be added
20mL concentrated hydrochloric acid, 60mL concentrated nitric acid dissolve by heating, boil removing nitrogen oxide, remove cooling, watch glass and mark is washed with water
Wall moves into 1000mL volumetric flask, is diluted with water to scale, mixes.Nickel containing 7.5mg in this solution 1mL.
6) it cobalt typical shelf solution: weighs the pure cobalt of 3.0000g (purity is greater than 99.99%) and is placed in 500mL beaker, be added
10mL concentrated hydrochloric acid, 30mL concentrated nitric acid dissolve by heating, boil removing nitrogen oxide, remove cooling, watch glass and mark is washed with water
Wall moves into 1000mL volumetric flask, is diluted with water to scale, mixes.Cobalt containing 3.0mg in this solution 1mL.
7) it manganese typical shelf solution: weighs the pure manganese of 4.0000g (purity is greater than 99.99%) and is placed in 500mL beaker, be added
10mL concentrated hydrochloric acid, 30mL concentrated nitric acid dissolve by heating, boil removing nitrogen oxide, remove cooling, watch glass and mark is washed with water
Wall moves into 1000mL volumetric flask, is diluted with water to scale, mixes.Manganese containing 4.0mg in this solution 1mL.
8) nickel cobalt manganese standard solution (211,523,622,65:15:20): accurately pipette 15.00mL, 20.00mL,
25.00mL nickel typical shelf solution and 10.00mL, 15.00mL, 25.00mL cobalt typical shelf solution, 10.00mL, 20.00mL,
25.00mL manganese typical shelf solution is separately added into 20mL (1+1) nitric acid, is diluted to quarter with water in one group of 1000mL volumetric flask
Degree mixes.
Standard solution specific concentration such as following table four after preparing:
Four standard solution of table
Embodiment 1
The present embodiment is using the NCM material of 523 types as sample, to verify the stability that the present invention tests.Specific implementation step
It is rapid as follows:
1.1) about 1.2g sample is weighed, 0.0002g is accurate to, is placed in 250mL beaker, 20mL (1+1) hydrochloric acid is added, adds
Heat to sample is completely dissolved, and is cooled to room temperature, and is transferred in 200mL volumetric flask completely, is diluted with water to scale, shaken up.
1.2) pipette 20mL test solution, be placed in 250mL volumetric flask, then plus 5mL (1+1) nitric acid, scale is diluted to water, is shaken
It is even, it is to be measured.
1.3) ICP instrument is opened by operating instruction, selects required test method, first testing standard curve, it is desirable that each member
For the linear dependence of element up to 0.9999 or more, ability Recognized Standards curve is qualified.
1.4) after standard curve is qualified, test QC management sample can just carry out sample within defined acceptability limit
Test.It is required that the nickel of QC management sample, cobalt, manganese percent value fluctuate within 0.20% (nickel, cobalt, manganese percentage above and below known numeric value
100%) the sum of ratio is.
1.5) QC manages sample test result within defined acceptability limit, just carries out sample test, it is desirable that two Duplicate Samples
Between product, nickel, cobalt, manganese percent value it is very poor all be not more than 0.25%, sample tests are effective just now.
1.6) during sample test, at interval of certain fixed intervals (10 minutes or so), QC management sample test is carried out,
Effective sample tests that QC is managed between sample qualification twice just calculate qualification；If unqualified, instrument is adjusted, instrument is made to be in steady
Determine state and then re-measures.
1.7) it after test passes, by resulting nickel, cobalt, manganese concentration value, is input in Excel table, passes through setting
Formula (be converted into nickel, cobalt, manganese percent value formula), the percent value of nickel, cobalt, manganese is calculated in table automatically.
1.8) test result is as follows table five:
Five embodiment of table, 1 test result
From upper table five it is found that the very poor 0.30%, relative standard deviation that is not more than of test illustrates to test no more than 0.20%
Stability it is very good.
Embodiment 2
The present embodiment is using the NCM material of 622 types as sample, to verify stability of the invention.Specific implementation step is such as
Under:
2.1) about 1.0g sample is weighed, 0.0002g is accurate to, is placed in 250mL beaker, 20mL (1+1) hydrochloric acid is added, adds
Heat to sample is completely dissolved, and is cooled to room temperature, and is transferred in 200mL volumetric flask completely, is diluted with water to scale, shaken up.
2.2) remaining step is same as Example 1.
2.3) test result is as follows:
Six embodiment of table, 2 test result
From upper table six it is found that the very poor 0.25%, relative standard deviation that is not more than of test illustrates to test no more than 0.30%
Stability it is very good.
Embodiment 3
The present embodiment is using the NCM material of 65:15:20 type as sample, to verify the stability that the present invention tests.It is specific real
Apply that steps are as follows:
3.1) about 1.1g sample is weighed, 0.0002g is accurate to, is placed in 250mL beaker, 20mL (1+1) hydrochloric acid is added, adds
Heat to sample is completely dissolved, and is cooled to room temperature, and is transferred in 200mL volumetric flask completely, is diluted with water to scale, shaken up.
3.2) remaining step is same as Example 1.
3.3) test result is as follows table seven:
Seven embodiment of table, 3 test result
From upper table seven it is found that the very poor 0.30%, relative standard deviation that is not more than of test illustrates to test no more than 0.35%
Stability it is good.
Embodiment 4
The present embodiment is using the NCM material of 211 types as sample, to verify the stability that the present invention tests.Specific implementation step
It is rapid as follows:
4.1) about 1.1g sample is weighed, 0.0002g is accurate to, is placed in 250mL beaker, 20mL (1+1) hydrochloric acid is added, adds
Heat to sample is completely dissolved, and is cooled to room temperature, and is transferred in 200mL volumetric flask completely, is diluted with water to scale, shaken up.
4.2) remaining step is same as Example 1.
4.3) test result is as follows:
Eight embodiment of table, 4 test result
From upper table eight it is found that the very poor 0.30%, relative standard deviation that is not more than of test illustrates to test no more than 0.35%
Stability it is good.
Claims (5)
1. a kind of method of nickel, cobalt and manganese ratio in measurement ternary material NCM, which is characterized in that be measured using ICP Instrument measuring
Nickel, cobalt and manganese ratio in solution, method includes the following steps:
1) three standard points are prepared in the preparation of standard solution；First standard point standard solution STD1, metal ion total concentration control
System is in 120-200mg/L；Second standard point standard solution STD2, metal ion total concentration are controlled in 230-320mg/L；Third
A standard point standard solution STD3, metal ion total concentration are controlled in 330-390mg/L；The metal ion be nickel, cobalt and
The metal ion of manganese；
2) appropriate adjustment sample weighting amount, constant volume and volume is pipetted, makes nickel in solution to be measured, cobalt and manganese concentration in three standard points
Within；
3) during the test, by controlling test condition, ICP instrument test is made to be in stable state；It is required that standard solution is worked as
Middle nickel, cobalt, three element of manganese linearly dependent coefficient be all larger than 0.9999；Meanwhile every one section of fixed testing time, it is desirable that test
One QC manages sample, it is desirable that and the nickel of QC management sample, cobalt, manganese percent value fluctuate within 0.20% above and below known numeric value, nickel,
The sum of cobalt, manganese percent value are 100%；
4) when sample test, it is desirable that survey two Duplicate Samples, very poor between two Duplicate Samples test results is not more than 0.25%；
5) after standard curve is qualified, after QC management sample is also met the requirements, illustrates that instrument is in stable state, start test specimens
Product, while requiring between two parallel samples, nickel, cobalt, manganese the very poor of percent value be all not more than 0.25%；Every one section of fixation
Testing time, test QC manage sample；Front and back effective sample tests that QC is managed between sample test passes twice are qualified just now.
2. the method for nickel, cobalt and manganese ratio in a kind of measurement ternary material NCM according to claim 1, which is characterized in that
In step 1), the control of metal ion total concentration is in 170-200mg/L in first standard point standard solution STD1, wherein nickel
Concentration control is in 110-120mg/L, and in 25-35mg/L, the concentration of manganese is controlled in 35-45mg/L for the concentration control of cobalt；Second
The control of metal ion total concentration is in 260-290mg/L in standard point standard solution STD2, wherein the concentration of nickel is controlled in 145-
155mg/L, in 40-50mg/L, the concentration of manganese is controlled in 75-85mg/L for the concentration control of cobalt；Third standard point standard solution
The control of metal ion total concentration is in 350-380mg/L in STD3, wherein the concentration of nickel is controlled in 185-195mg/L, the concentration of cobalt
Control is controlled in 70-80mg/L, the concentration of manganese in 95-105mg/L.
3. the method for nickel, cobalt and manganese ratio, feature exist in a kind of measurement ternary material NCM according to claim 1 or 2
Measure that sample, nickel, cobalt, manganese concentration by following equation are converted into nickel, cobalt, manganese percentage in QC management sample in, ICP instrument
Value:
In formula: Ni%-obtains the percent value of nickel in liquor sample by calculating；
Co%-obtains the percent value of cobalt in liquor sample by calculating；
Mn%-obtains the percent value of manganese in liquor sample by calculating；
ρNi- instrument measures the concentration of nickel in sample, unit mg/L；
ρCo- instrument measures the concentration of cobalt in sample, unit mg/L；
ρMn- instrument measures the concentration of manganese in sample, unit mg/L；
The molal weight of 58.69-nickel, unit g/mol；
The molal weight of 58.93-cobalts, unit g/mol；
The molal weight of 54.94-manganese, unit g/mol.
4. the method for nickel, cobalt and manganese ratio, feature exist in a kind of measurement ternary material NCM according to claim 1 or 2
In the ternary material NCM includes but is not limited to H955, H811, H622, H523, H211, H424, H325, H111, and copper contains
Amount is not more than 0.0050%, and iron content is not more than 0.0100%, and Zn content is not more than 0.0050%, and calcium content is not more than
0.0150%, content of magnesium is not more than 0.0150%, and silicone content is not more than 0.0300%, and aluminium content is not more than 0.0050%.
5. the method for nickel, cobalt and manganese ratio, feature exist in a kind of measurement ternary material NCM according to claim 1 or 2
In ICP instrument line spectrum selects: nickel is 221.039 wavelength/nm, cobalt is 201.15 wavelength/nm, manganese is 191.447 wavelength/nm；
The parameter setting of ICP instrument: RF power is 1300W, and plasma (orifice) gas 15L/min, auxiliary gas is 0.4L/min, and atomization gas is
0.7L/min, sample introduction pump speed are 1.5L/min, and observed pattern is radial.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987905A (en) * | 2019-11-20 | 2020-04-10 | 江苏宝众宝达药业有限公司 | Method for measuring content of trace elements in battery-grade lithium hydroxide monohydrate by ICP method |
| CN114813710A (en) * | 2021-11-12 | 2022-07-29 | 北京泰丰先行新能源科技有限公司 | Method for measuring molar ratio of lithium to host metal in positive electrode material |
| CN115032327A (en) * | 2022-06-01 | 2022-09-09 | 天津国安盟固利新材料科技股份有限公司 | Method for determining content of nickel, cobalt and manganese in positive electrode material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198495A (en) * | 2016-07-08 | 2016-12-07 | 天津巴莫科技股份有限公司 | The method of testing of lithium cobalt mol ratio in cobalt acid lithium |
-
2019
- 2019-03-29 CN CN201910251445.XA patent/CN109884037A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198495A (en) * | 2016-07-08 | 2016-12-07 | 天津巴莫科技股份有限公司 | The method of testing of lithium cobalt mol ratio in cobalt acid lithium |
Non-Patent Citations (3)
| Title |
|---|
| 王静: "电感耦合等离子体发射光谱（ICP-OES）法测定镍钴锰酸锂中主元素含量", 《中国无机分析化学》 * |
| 谭立志 等: "ICP- OES快速测定CIGS 薄膜中主体及掺杂元素", 《电源技术》 * |
| 鄢国强: "《材料质量检测与分析技术》", 31 May 2005, 中国计量出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987905A (en) * | 2019-11-20 | 2020-04-10 | 江苏宝众宝达药业有限公司 | Method for measuring content of trace elements in battery-grade lithium hydroxide monohydrate by ICP method |
| CN114813710A (en) * | 2021-11-12 | 2022-07-29 | 北京泰丰先行新能源科技有限公司 | Method for measuring molar ratio of lithium to host metal in positive electrode material |
| CN115032327A (en) * | 2022-06-01 | 2022-09-09 | 天津国安盟固利新材料科技股份有限公司 | Method for determining content of nickel, cobalt and manganese in positive electrode material |
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