YS/T 1006.1-2014 PDF English
US$115.00 · In stock · Download in 9 secondsYS/T 1006.1-2014: Methods for chemical analysis of lithium nickel cobalt manganese oxide. Part 1: Determination the total of nickel cobalt manganese content. EDTA disodium salt titration Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
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Methods for chemical analysis of lithium nickel cobalt manganese oxide. Part 1: Determination the total of nickel cobalt manganese content. EDTA disodium salt titration
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YS/T 1006.1-2014: Methods for chemical analysis of lithium nickel cobalt manganese oxide. Part 1: Determination the total of nickel cobalt manganese content. EDTA disodium salt titration
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YST1006.1-2014
YS
NON-FERROUS METAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.99
H 14
Methods for Chemical Analysis of Lithium Nickel
Cobalt Manganese Oxide - Part 1: Determination the
Total of Nickel Cobalt Manganese Content - EDTA
Disodium Salt Titration
ISSUED ON: OCTOBER 14, 2014
IMPLEMENTED ON: APRIL 1, 2015
Issued by: Ministry of Industry and Information Technology of the
People’s Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Method Summary ... 4
3 Reagents ... 4
4 Specimen ... 5
5 Analytical Procedures ... 5
6 Calculation of Analysis Result ... 6
7 Precision ... 7
8 Test Report ... 7
Methods for Chemical Analysis of Lithium Nickel
Cobalt Manganese Oxide - Part 1: Determination the
Total of Nickel Cobalt Manganese Content - EDTA
Disodium Salt Titration
1 Scope
This Part of YS/T 1006 specifies the method for the determination of the total content
of nickel, cobalt and manganese in lithium nickel cobalt manganese oxide, which is the
cathode material for lithium ion batteries.
This Part is applicable to the determination of the total content of nickel, cobalt and
manganese in lithium nickel cobalt manganese oxide, which is the cathode material
for lithium ion batteries. The range of determination is 57.00% ~ 61.00%.
2 Method Summary
Use hydrochloric acid to dissolve the specimen. In an alkaline solution with a pH value
of 9 ~ 10, use murexide as an indicator; use EDTA standard titration solution to titrate
it, until it turns fuchsia. In accordance with the volume of the consumed EDTA standard
titration solution, calculate the total content of nickel, cobalt and manganese.
3 Reagents
Unless it is otherwise specified, only reagents that are confirmed to be analytically pure,
and Grade-2 (and above) water are used in the analysis.
3.1 Murexide indicator: take 0.4 g of murexide; add 50 g of potassium sulfate; in a
mortar, thoroughly grind it into fine powder.
3.2 Hydrochloric acid (1 + 1).
3.3 Ammonia water-ammonium chloride buffer solution, pH value 9 ~ 10: weigh-take
54.5 g of ammonium chloride and dissolve it in water; add 200 mL of concentrated
ammonia water; use water to dilute to 1,000 mL, then, mix it up.
3.4 Cobalt standard solution: weigh-take 1.0000 g of metallic cobalt (mass fraction ≥
99.99%) in a 400 mL beaker; add 50 mL of hydrochloric acid (3.2). After dissolving it at
a low temperature, transfer it to a 1,000 mL volumetric flask; use water to dilute to the
scale; mix it up. 1 mL of this solution contains 1.0 mg of cobalt.
Weigh-take 0.10 g of specimen, accurate to 0.0001 g.
5.2 Number of Determinations
Independently conduct two determinations; take the average value.
5.3 Blank Test
Conduct a blank test on the accompanying specimen.
5.4 Determination
5.4.1 Place the specimen (5.1) into a 100 mL beaker; add 25 mL of hydrochloric acid
(3.2); heat it on a low-temperature electric hot plate, until it is completely dissolved.
After it cools down, transfer it into a 100 mL volumetric flask. Add water to dilute to the
scale; mix it up.
5.4.2 Transfer-take 25.00 mL of test solution in a 250 mL Erlenmeyer flask. Add about
50 mL of water; add 10 mL of the buffer solution (3.3) and about 0.1 g of the indicator
(3.1); use EDTA standard titration solution (3.5) to titrate it, until it turns fuchsia.
6 Calculation of Analysis Result
In accordance with Formula (2), calculate the mass fraction w(Ni + Co + Mn) of the total
content of nickel, cobalt and manganese, expressed in (%):
Where,
c---the actual concentration of the EDTA standard titration solution, expressed in
(mol/L);
V2---the volume of the EDTA standard titration solution consumed in the titration of the
test solution, expressed in (mL);
V0---the volume of the EDTA standard titration solution consumed in the titration of the
blank test solution, expressed in (mL);
M---the average molar mass of nickel, cobalt and manganese, expressed in (g/mol);
V4---the dilution volume of test solution, expressed in (mL);
m---the mass of the specimen, expressed in (g);
V3---the volume of divided test solution, expressed in (mL).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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