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GB/T 26031-2010Lithium nickel oxide (English PDF)

镍酸锂

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China

Level / Type

National · Recommended

Issue date

January 10, 2011

Implementation date

October 1, 2011

Scope

GB/T 26031-2010 is the English-translated version of 镍酸锂.

GB/T 26031-2010 is the Chinese national standard on lithium nickel oxide, in the field of metallurgy. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 10 January 2011 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 October 2011. Classification: ICS 77.160, CCS H71. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

Document preview — GB/T 26031-2010

National Standard of the People's Republic of China

ICS: 77.160
Classification: H71

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China

1 Scope
2 Normative references
3 Terms and definitions...
4 Requirements...
4.7 Electrochemical performance
5 Test methods
5.1 Chemical composition
5.5 Physical properties
5.7 Electrochemical properties
6 Inspection rules...
7 Marking, packaging, transportation, storage, and quality

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 Requirements...

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.

5.1 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

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

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;

d) This standard number;

e) Date of inspection;

f) Name or code of the inspector;

g) Moisture-proof mark.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1717 · GB/T 5162 · GB/T 5314 · GB/T 6283 · GB/T 19077.1

Similar standards

GB/T 19589-2004|GB/T 20508-2019|GB/T 2085.1-2007|GB/T 2085.4-2014|GB/T 24485-2009

Editions of GB/T 26031

Edition	Title	Revision	Status
GB/T 26031-2010	Lithium nickel oxide	current edition	Current

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