GB/T 26029-2023Nickel cobalt manganese ternary composite oxide (English PDF)

4.1 Designations

The product chemical formula is NixCoyMn1-x-yOz (where x + y < 1, 1 <= z <= 2 - x). The product designation name consists of the capital letters NCMO and 6 digits, wherein N stands for Ni, C stands for Co, M stands for Mn, O stands for oxide. The first two digits represent the molar fraction of the nickel element; the middle two digits represent the molar fraction of the cobalt element; the last two digits represent the molar fraction of the manganese element. If the molar fraction is a single digit, add 0 before the single digit. If there are non-integer index requirements in the molar fractions of the three elements Ni, Co, Mn, it will be determined by negotiation between the supplier and the buyer. Example:

Designation NCMO402040 indicates that the ratio of the amount of nickel cobalt manganese is 40.20.40; its chemical formula is Ni0.40Co0.20Mn0.40Oz (1 <= z <= 1.6). The designation NCMO900505 indicates that the ratio of the amount of nickel cobalt manganese is 90.05.05; its chemical formula is Ni0.90Co0.05Mn0.05Oz (1 <= z <= 1.1).

4.2 Code

The product code is divided into 3-digit and 4-digit.

When the amount fraction of nickel cobalt manganese in the product is an integer multiple of 10, a 3-digit code is used. The 3 digits are the values of the amount fraction of nickel cobalt manganese divided by 10, followed by -O to represent the oxide.

5.6 Other requirements

If the buyer has special requirements for the nickel-cobalt-manganese ternary composite oxide, it can be determined by negotiation between the supplier and the buyer and indicated in the order form.

6.1 Chemical composition

6.1.1 The mass fraction of nickel cobalt manganese in the product is first measured in accordance with the provisions of YS/T 928.3; then the mass fraction of nickel cobalt manganese is calculated. The calculation method is in accordance with the provisions of Appendix A of GB/T 26300-2020.

6.1.2 The determination of the total amount of nickel cobalt manganese in the product is carried out in accordance with the provisions of YS/T 1006.1.

6.1.3 The determination of the content of copper, iron, sodium, zinc, calcium, magnesium, aluminum in the product is carried out in accordance with the provisions of YS/T 928.4.

6.1.4 The determination of the chromium content in the product is carried out in accordance with the method agreed upon by the supplier and the buyer.

6.1.5 The determination of the lead content in the product is carried out in accordance with the provisions of YS/T 928.5.

6.1.6 The determination of the sulfate content in the product is carried out in accordance with the method agreed upon by the supplier and the buyer.

6.2 Physical properties

6.2.1 The bulk density of the product shall be determined in accordance with the provisions of GB/T 1479.1.

6.2.2 The tap density of the product shall be determined in accordance with the provisions of GB/T 5162.

6.2.3 The median diameter (D50) of the laser particle size of the product shall be determined in accordance with the provisions of GB/T 19077.

6.2.4 The specific surface area of the product shall be determined in accordance with the provisions of GB/T 19587.

6.2.5 The microscopic morphology of the product particles shall be observed in accordance with the provisions of JY/T 0584.

6.3 Magnetic foreign matter

The content of magnetic foreign matter in the product shall be determined in accordance with the provisions of GB/T 41704.

6.4 Moisture content

The method for determining the moisture content in the product shall be negotiated by the supplier and the buyer.

6.5 Appearance quality

The appearance quality of the product shall be visually inspected.

7.1 Inspection and acceptance

7.1.1 The product shall be inspected by the supplier; the product quality shall comply with the provisions of this document and the requirements of the order form.

7.1.2 The purchaser may inspect the received products in accordance with the provisions of this document. If the inspection results do not comply with the provisions of this document and the requirements of the order form, the purchaser may submit the matter to the supplier within 15 days from the date of receipt of the product; the supplier and purchaser shall negotiate to resolve the issue. If arbitration is required, the arbitration sampling shall be conducted at the purchaser and joined by the supplier and purchaser.

7.2 Group-batching

The products shall be submitted for inspection in batches; each batch shall consist of nickel-cobalt-manganese composite oxides of the same production cycle, designation, specification; the weight of a single batch shall not exceed 10 t.

7.3 Inspection items

Each batch of products shall be inspected for chemical composition, physical properties, moisture content, magnetic foreign matter, appearance quality.

7.4 Sampling and specimen preparation

7.4.1 The inspection items and sampling methods for each batch of products shall comply with the provisions of Table 3.

8.3 Transportation and storage

The products shall be stacked in a ventilated and dry place. During transportation and storage, the packaging shall be prevented from cracking and caking due to moisture.

The shelf life of the product is 1 year from the date of production.

8.4 Accompanying documents

Each batch of products shall be accompanied by accompanying documents, which shall include supplier information, product information, this document number, exit-factory date or packaging date, as well as the following contents.

a) Product quality guarantee, the contents are as follows.

- Main performance and technical parameters of the product;

- Product characteristics (including manufacturing process and raw material characteristics);

- Responsibility for product quality;

- Quality certification obtained by the product and various analysis and inspection results with the supplier's quality department's inspection stamp.

b) Product certificate, the contents of which are as follows.

- Inspection items and their results or inspection conclusions;

- Batch size or batch number;

- Inspection date;

- Inspector signature or seal. […]