SJ/T 11795-2022 PDF English
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SJ/T 11795-2022: Test method for determining magnetic impurity content of electrode materials in lithium ion batteries ---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/SJT11795-2022
SJ
ELECTRONICS INDUSTRY STANDARD
ICS 31.030
CCS L 90
Test method for determining magnetic impurity content of
electrode materials in lithium ion batteries
Issued on. APRIL 24, 2022
Implemented on. JULY 01, 2022
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Summary of test methods... 5
5 Instruments and appliances... 5
6 Reagents... 6
7 Environmental requirements... 6
8 Pre-treatment... 6
9 Instrumental analysis... 8
10 Result calculation... 9
11 Precision... 10
12 Reports... 10
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
Please note that some content in this document may be subject to patents. The publisher
of this document assumes no responsibility for identifying patents.
This document was proposed by AND shall be under the jurisdiction of the National
Semiconductor Equipment and Materials Standardization Technical Committee
(SAC/TC 203).
Drafting organizations of this document. CATL New Energy Technology Co., Ltd.,
China Electronics Technology Standardization Institute, Dongguan New Energy
Technology Co., Ltd., Guizhou Zhenhua New Materials Co., Ltd., Tianjin Bamo
Technology Co., Ltd., Hunan Shanshan Energy Technology Co., Ltd., Qinghai Taifeng
Xianxing Lithium Energy Technology Co., Ltd., Jiangxi Zichen Technology Co., Ltd.,
Zhongtian Emerging Materials Co., Ltd., Gansu Jingpu Testing Technology Co., Ltd.,
Shanghai Shanshan Technology Co., Ltd., Hefei Guoxuan Hi-Tech Power Energy Ltd.
The main drafters of this document. Wei Yimin, He Penglin, Feng Yabin, Geng Huihui,
Du Wanying, Gao Xianhong, Gu Ran, Fu Pingping, Li Xu, Yang Haijuan, Liu Pengliang,
Zhu Lingling, Shi Jingjing, Liu Ranran, Wu Guanjun, Jiang Ninglin, Guo Yuanyuan,
Sun Chao.
Test method for determining magnetic impurity content of
electrode materials in lithium ion batteries
1 Scope
This document specifies the test method for magnetic impurity content in electrode
materials of lithium-ion battery, including terms and definitions, test method summary,
instruments and appliances, reagents, environmental requirements, pre-treatment,
instrument analysis, result calculation, precision, reporting.
This document is applicable to the testing of magnetic impurity content between 10
μg/kg ~ 5000 μg/kg, in positive and negative electrode powder materials of lithium-ion
battery, their slurries, as well as binders, conductive agents and other auxiliary materials.
This standard is not applicable to the detection of magnetic impurity content in lithium
iron phosphate materials.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated reference
documents, only the version corresponding to the date applies to this document; for
undated reference documents, the latest version (including all amendments) applies to
this document.
GB/T 6379.1-2004 Accuracy (trueness and precision) of measurement methods and
results - Part 1.General principles and definitions
GB/T 6379.2-2004 Accuracy (trueness and precision) of measurement methods and
results - Part 2.Basic method for the determination of repeatability and
reproducibility of a standard measurement method
3 Terms and definitions
The terms and definitions, which are defined in GB/T 6379.1-2004, as well as the
following terms and definitions, apply to this document.
4 Summary of test methods
The sample is divided into a suitable liquid at a suitable concentration. After mixing
and adsorption, an acidic solution is added to dissolve the adsorbed magnetic impurity.
5 Instruments and appliances
5.1 Inductively coupled plasma optical emission spectrometer (ICP-OES). Instrument
performance shall comply with the requirements of JY/T 015-1996.
5.2 Two-dimensional mixer. Horizontal rolling, recommended speed adjustment range
(0 ~ 270) r/min;
5.5 Electronic balance. Sensitivity is 0.01 g.
5.6 Ultrasonic cleaning machine.
5.7 Sample jar. Wide-mouth plastic bottle, 500 mL, diameter (80 ~ 90) mm.
5.8 Other appliances. Plastic stoppered colorimetric tube (50 mL, inner diameter 3 cm),
beaker (500 mL), plastic or wooden clamps, auxiliary magnets (1000 GS ~ 3000 GS).
6 Reagents
6.1 The water used in this document shall comply with the requirements of grade II
water in GB/T 6682-2008.
6.2 Concentrated nitric acid. Mass fraction is not less than 65%, superior grade pure or
higher.
6.6 Argon gas. Purity not less than 99.999%.
6.7 Fe, Cr, Ni, Zn standard solutions. Single element or mixed standard solutions with
certificates, OR prepared using certified reference materials within the validity period.
6.8 Aqua regia solution (1.1). Prepared according to the volume ratio of concentrated
hydrochloric acid. concentrated nitric acid. water = 3.1.4.
7 Environmental requirements
7.1 Ambient temperature. The instrument analysis ambient temperature (20 ~ 25) °C.
8 Pre-treatment
8.1 Weighing samples
Weigh 200 g of specimen, accurate to 0.01 g.
8.2 Mixing
Place the specimen in the sample jar. Add a clean magnetic rod. Add 300 mL of
dispersion solvent (pure water or absolute ethanol or NMP).
8.3 One-time adsorption
Place the sample jar on the two-dimensional mixer. Perform the first adsorption, at a
rotation speed of 90 r/min for 30 minutes. After stopping the rotation, immediately use
an auxiliary magnet to attach the magnetic rod to the side or top cover of the sample jar.
Take out the magnetic rod.
8.5 Cleaning
Add 150 mL of pure water. Use an auxiliary magnet, to hold the magnetic rod at the
bottom of the beaker. Shake the beaker to wash the magnetic rod. Pour out the cleaning
solution. Repeat three times.
8.6 Digestion
Move the cleaned magnetic rods into colorimetric tubes. Add 10.0 mL of acidic solution
(aqua regia or concentrated hydrochloric acid solution). Then place the colorimetric
tube in a constant temperature water bath. Control the water temperature at (90 ~
100) °C. Digest for 30 minutes.
8.8 Multiple adsorption
8.8.1 Add a clean magnetic rod to the sample jar after the first adsorption. Perform the
i-th (i = 2, 3..., n) adsorption, at a rotation speed of 90 r/min for 10 minutes. After each
adsorption, immediately use an auxiliary magnet to attach the magnetic rod to the side
or top cover of the sample jar. Take out the magnetic rod. Then put in a clean magnetic
rod and continue mixing and adsorption.
8.8.2 Repeat steps 8.4 ~ 8.7, to obtain the test liquid adsorbed n times.
8.9 Blank test
Except that no specimen to be tested is added, a blank test shall be performed along
with the specimen under the same conditions for each operation, to obtain a blank test
solution.
9 Instrumental analysis
9.1 Select a reasonable dilution factor, to prepare the standard solution. It can use step-
by-step dilution. Use 2% nitric acid solution to dilute it to the mark. Shake well.
9.2 Under the selected optimal working conditions, introduce the reagent blank and a
series of standard solutions into the inductively coupled plasma optical emission
spectrometer (ICP-OES) in sequence. D
10 Result calculation
10.1 Calculation of single element content
10.2 Calculation of total content
10.2.1 The total content of magnetic impurity is expressed by the sum of the contents
of the metal elements iron, chromium, nickel, zinc, which is calculated according to
formula (3).
SJ/T 11795-2022
SJ
ELECTRONICS INDUSTRY STANDARD
ICS 31.030
CCS L 90
Test method for determining magnetic impurity content of
electrode materials in lithium ion batteries
Issued on. APRIL 24, 2022
Implemented on. JULY 01, 2022
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Summary of test methods... 5
5 Instruments and appliances... 5
6 Reagents... 6
7 Environmental requirements... 6
8 Pre-treatment... 6
9 Instrumental analysis... 8
10 Result calculation... 9
11 Precision... 10
12 Reports... 10
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
Please note that some content in this document may be subject to patents. The publisher
of this document assumes no responsibility for identifying patents.
This document was proposed by AND shall be under the jurisdiction of the National
Semiconductor Equipment and Materials Standardization Technical Committee
(SAC/TC 203).
Drafting organizations of this document. CATL New Energy Technology Co., Ltd.,
China Electronics Technology Standardization Institute, Dongguan New Energy
Technology Co., Ltd., Guizhou Zhenhua New Materials Co., Ltd., Tianjin Bamo
Technology Co., Ltd., Hunan Shanshan Energy Technology Co., Ltd., Qinghai Taifeng
Xianxing Lithium Energy Technology Co., Ltd., Jiangxi Zichen Technology Co., Ltd.,
Zhongtian Emerging Materials Co., Ltd., Gansu Jingpu Testing Technology Co., Ltd.,
Shanghai Shanshan Technology Co., Ltd., Hefei Guoxuan Hi-Tech Power Energy Ltd.
The main drafters of this document. Wei Yimin, He Penglin, Feng Yabin, Geng Huihui,
Du Wanying, Gao Xianhong, Gu Ran, Fu Pingping, Li Xu, Yang Haijuan, Liu Pengliang,
Zhu Lingling, Shi Jingjing, Liu Ranran, Wu Guanjun, Jiang Ninglin, Guo Yuanyuan,
Sun Chao.
Test method for determining magnetic impurity content of
electrode materials in lithium ion batteries
1 Scope
This document specifies the test method for magnetic impurity content in electrode
materials of lithium-ion battery, including terms and definitions, test method summary,
instruments and appliances, reagents, environmental requirements, pre-treatment,
instrument analysis, result calculation, precision, reporting.
This document is applicable to the testing of magnetic impurity content between 10
μg/kg ~ 5000 μg/kg, in positive and negative electrode powder materials of lithium-ion
battery, their slurries, as well as binders, conductive agents and other auxiliary materials.
This standard is not applicable to the detection of magnetic impurity content in lithium
iron phosphate materials.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated reference
documents, only the version corresponding to the date applies to this document; for
undated reference documents, the latest version (including all amendments) applies to
this document.
GB/T 6379.1-2004 Accuracy (trueness and precision) of measurement methods and
results - Part 1.General principles and definitions
GB/T 6379.2-2004 Accuracy (trueness and precision) of measurement methods and
results - Part 2.Basic method for the determination of repeatability and
reproducibility of a standard measurement method
3 Terms and definitions
The terms and definitions, which are defined in GB/T 6379.1-2004, as well as the
following terms and definitions, apply to this document.
4 Summary of test methods
The sample is divided into a suitable liquid at a suitable concentration. After mixing
and adsorption, an acidic solution is added to dissolve the adsorbed magnetic impurity.
5 Instruments and appliances
5.1 Inductively coupled plasma optical emission spectrometer (ICP-OES). Instrument
performance shall comply with the requirements of JY/T 015-1996.
5.2 Two-dimensional mixer. Horizontal rolling, recommended speed adjustment range
(0 ~ 270) r/min;
5.5 Electronic balance. Sensitivity is 0.01 g.
5.6 Ultrasonic cleaning machine.
5.7 Sample jar. Wide-mouth plastic bottle, 500 mL, diameter (80 ~ 90) mm.
5.8 Other appliances. Plastic stoppered colorimetric tube (50 mL, inner diameter 3 cm),
beaker (500 mL), plastic or wooden clamps, auxiliary magnets (1000 GS ~ 3000 GS).
6 Reagents
6.1 The water used in this document shall comply with the requirements of grade II
water in GB/T 6682-2008.
6.2 Concentrated nitric acid. Mass fraction is not less than 65%, superior grade pure or
higher.
6.6 Argon gas. Purity not less than 99.999%.
6.7 Fe, Cr, Ni, Zn standard solutions. Single element or mixed standard solutions with
certificates, OR prepared using certified reference materials within the validity period.
6.8 Aqua regia solution (1.1). Prepared according to the volume ratio of concentrated
hydrochloric acid. concentrated nitric acid. water = 3.1.4.
7 Environmental requirements
7.1 Ambient temperature. The instrument analysis ambient temperature (20 ~ 25) °C.
8 Pre-treatment
8.1 Weighing samples
Weigh 200 g of specimen, accurate to 0.01 g.
8.2 Mixing
Place the specimen in the sample jar. Add a clean magnetic rod. Add 300 mL of
dispersion solvent (pure water or absolute ethanol or NMP).
8.3 One-time adsorption
Place the sample jar on the two-dimensional mixer. Perform the first adsorption, at a
rotation speed of 90 r/min for 30 minutes. After stopping the rotation, immediately use
an auxiliary magnet to attach the magnetic rod to the side or top cover of the sample jar.
Take out the magnetic rod.
8.5 Cleaning
Add 150 mL of pure water. Use an auxiliary magnet, to hold the magnetic rod at the
bottom of the beaker. Shake the beaker to wash the magnetic rod. Pour out the cleaning
solution. Repeat three times.
8.6 Digestion
Move the cleaned magnetic rods into colorimetric tubes. Add 10.0 mL of acidic solution
(aqua regia or concentrated hydrochloric acid solution). Then place the colorimetric
tube in a constant temperature water bath. Control the water temperature at (90 ~
100) °C. Digest for 30 minutes.
8.8 Multiple adsorption
8.8.1 Add a clean magnetic rod to the sample jar after the first adsorption. Perform the
i-th (i = 2, 3..., n) adsorption, at a rotation speed of 90 r/min for 10 minutes. After each
adsorption, immediately use an auxiliary magnet to attach the magnetic rod to the side
or top cover of the sample jar. Take out the magnetic rod. Then put in a clean magnetic
rod and continue mixing and adsorption.
8.8.2 Repeat steps 8.4 ~ 8.7, to obtain the test liquid adsorbed n times.
8.9 Blank test
Except that no specimen to be tested is added, a blank test shall be performed along
with the specimen under the same conditions for each operation, to obtain a blank test
solution.
9 Instrumental analysis
9.1 Select a reasonable dilution factor, to prepare the standard solution. It can use step-
by-step dilution. Use 2% nitric acid solution to dilute it to the mark. Shake well.
9.2 Under the selected optimal working conditions, introduce the reagent blank and a
series of standard solutions into the inductively coupled plasma optical emission
spectrometer (ICP-OES) in sequence. D
10 Result calculation
10.1 Calculation of single element content
10.2 Calculation of total content
10.2.1 The total content of magnetic impurity is expressed by the sum of the contents
of the metal elements iron, chromium, nickel, zinc, which is calculated according to
formula (3).
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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