GB/T 26031-2010 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 26031-2010 | English | 150 |
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Lithium nickel oxide
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GB/T 26031-2010: Lithium nickel oxide---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/GBT26031-2010
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 77.160
H 71
Lithium nickel oxide
镍 酸 锂
ISSUED ON: JANUARY 10, 2011
IMPLEMENTED ON: OCTOBER 1, 2011
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC.
Standardization Administration of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements ... 5
5 Test methods ... 6
6 Inspection rules ... 8
7 Marking, packaging, transportation, storage, and quality certificate ... 10
8 Contract (or order form) content ... 11
Lithium nickel oxide
1 Scope
This standard specifies the terms and definitions, requirements, test methods, inspection
rules, markings, packaging, transportation, storage, quality certificate, and contract (or
order form) content of lithium nickel oxide.
This standard applies to lithium nickel oxide, the positive active material for lithium-
ion batteries.
2 Normative references
The following documents are essential for the application of this document. For the
dated referenced documents, only the versions with the indicated dates are applicable
to this document; for the undated referenced documents, only the latest version
(including all the amendments) is applicable to this document.
GB/T 1717 Determination of pH value of an aqueous suspension of pigments
GB/T 5162 Metallic powders - Determination of tap density
GB/T 5314 Powders for powder metallurgical purposes - Sampling
GB/T 6283 Chemical products - Determination of water Karl • Fischer method
(general method)
GB/T 13390 Metallic powder - Determination of the specific surface area - Method
of nitrogen adsorption
GB/T 19077.1 Particle size analysis - Laser diffraction methods - Part 1: General
principles
GB/T 23365 Electrochemical performance test of lithium cobalt oxide - Test
method for the initial discharge specific capacity and the initial efficiency
GB/T 23366 Electrochemical performance test of lithium cobalt oxide - Test
method for discharge plateau capacity ratio and cycle life
JCPDS1) (16-427) Graph of X-ray powder diffraction standard of lithium nickel
oxide
1) Joint Committee on Powder Diffraction Standards
D10 shall be greater than 1.0 μm; D50 shall be 5.0 μm~10.0 μm; D90 shall be less than
30.0 μm.
4.5.3 Specific surface area
The specific surface area of the product shall be 0.30 m2/g~0.70 m2/g.
4.6 pH value
The pH value of the product shall be 10.0~12.5.
4.7 Electrochemical performance
4.7.1 First discharge specific capacity
The first discharge specific capacity of the product under specified conditions shall not
be less than 170 mA • h/g.
4.7.2 First charge and discharge efficiency
The first charge and discharge efficiency of the product under specified conditions shall
not be less than 87%.
4.7.3 Platform capacity ratio
Under specified conditions, the platform capacity ratio of the product shall not be less
than 80% after 10 charge and discharge cycles, and the platform capacity ratio shall not
be less than 70% after 100 charge and discharge cycles.
4.7.4 Cycle life
When the discharge capacity of the product reaches 80% of the first cycle discharge
capacity under specified conditions, the number of cycles shall be no less than 300 times.
5 Test methods
5.1 Chemical composition
5.1.1 The chemical composition of the product shall be measured according to the
method approved by both the supplier and the buyer.
5.1.2 The molar ratio of Li TO the combination of two elements Ni and Co in the
chemical composition of the product is calculated based on the results measured in 5.1.1.
5.2 Appearance quality
The appearance quality of the product is visually inspected.
5.3 Moisture content
The moisture content of the product is measured in accordance with the provisions of
GB/T 6283.
5.4 Crystal structure
The crystal structure of the product is detected by using an X-ray diffractometer.
5.5 Physical properties
5.5.1 Tap density
The measurement of the tap density of the product shall be carried out in accordance
with the provisions of GB/T 5162.
5.5.2 Particle size distribution
The determination of the particle size distribution of the product is carried out in
accordance with the provisions of GB/T 19077.1.
5.5.3 Specific surface area
The specific surface area of the product is measured in accordance with the regulations
of GB/T 13390.
5.6 pH value
The pH value of the product is measured in accordance with the regulations of GB/T
1717.
5.7 Electrochemical properties
5.7.1 First discharge specific capacity
The first discharge specific capacity of the product is measured in accordance with the
regulations of GB/T 23365.
5.7.2 First charge and discharge efficiency
The first charge and discharge efficiency of the product is measured in accordance with
the regulations of GB/T 23365.
5.7.3 Platform capacity ratio
The determination of the platform capacity ratio of the product is carried out in
accordance with the provisions of GB/T 23366. The voltage platform is 3.4 V.
6.5.2 If the appearance inspection of the product fails, the product quality of the barrel
will be deemed to be unqualified.
6.5.3 Six test batteries are made according to the method specified in GB/T 23365.
Three of them are selected randomly to test the first discharge specific capacity and first
charge and discharge efficiency. If the performance of 2 batteries cannot meet the
requirements of this standard, the batch is deemed to be unqualified; however, it is
allowed to take 3 more batteries for re-inspection. If the performance of 2 batteries
meets the requirements of this standard, the batch is deemed to be qualified.
6.5.4 Six test batteries are made according to the method specified in GB/T 23366.
Three of them are selected randomly to test the platform capacity ratio and cycle life.
If the performance of 2 batteries cannot meet the requirements of this standard, the
batch will be deemed to be unacceptable; however, it is allowed to take 3 more batteries
for re-inspection. If the performance of 2 batteries meets the requirements of this
standard, the batch will be deemed to be qualified.
7 Marking, packaging, transportation, storage, and quality
certificate
7.1 Marking
There is no mark on the surface of the aluminum-plastic packaging bag. There shall be
a certificate of conformity on the outer packaging barrel, which shall be marked:
a) Batch number;
b) Trademark and name of the manufacturer;
c) Net weight;
d) This standard number;
e) Date of inspection;
f) Name or code of the inspector;
g) Moisture-proof mark.
7.2 Packaging
Products that pass the inspection are packed in aluminum plastic bags, thermoplastic
sealed, and put into outer packaging barrels. The net weight of each barrel is about 25
kg.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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