GB/T 26300-2020 (English Version)

Standard No.: GB/T 26300-2020
Language: Chinese, Available in English version
Release Date: 2020
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 26300-2020
Replace: GB/T 26300-2010

Scope: This standard specifies the classification, technical requirements, test methods, inspection rules, packaging, marking, transportation and storage, quality certificate and purchase order (or contract) content of cobalt-manganese three-element composite ammonia oxide. This standard is applicable to nickel-bath-manganese three-element composite oxygen oxide, whose chemical formula is NiCovMn_(OH); (where Z+y=1, Z=0 and y>0).

Introduction

Core changes in the standard revision

Technical dimensions	2010 version	2020 version	Key changes
Grade system	Old naming rules	NCMH+6-digit code	New 3/4-digit code system
Chemical composition	Cl-/Si is not restricted	Cl-/Si is deleted, and the limit values of Na/Zn, etc. are adjusted	Impurity control is stricter
Physical properties	Loose density indicators	Loose apparent density ≥0.50g/cm³ Tapped density ≥1.10g/cm³	Improved compaction performance requirements
New indicators	None	Magnetic foreign matter ≤0.00001%	Coping with the safety of high-nickel materials

Analysis of key technical requirements

Chemical composition control

The total amount of nickel, cobalt and manganese in the product must be controlled within 60.00%-64.00%, and the tolerance of the amount fraction of each element shall be ≤±1.00%. Typical products such as NCMH831205 (Ni83:Co12:Mn5) must ensure that the nickel content is within the range of 82.00-84.00%.

Physical performance indicators

Particle size distribution: D50 is controlled at 2.00-21.00μm
Specific surface area: 2.00-30.00m²/g
Morphology requirements: must be spherical/quasi-spherical particles

Detection method upgrade

Magnetic foreign matter detection

GB/T 24533-2019 Appendix K method is adopted, and the detection is carried out using a high gradient magnetic separator, with a detection limit of 0.1ppb. A case of a certain enterprise shows that the content of magnetic foreign matter can be reduced from 0.00005% to 0.000008% by adding a magnetic rod filtration process.

Material fraction calculation

Added normative Appendix A, specifying the formula:
X_Ni=(W_Ni/58.69)÷(W_Ni/58.69+W_Co/58.93+W_Mn/54.94)×100%
The calculation result is rounded to 0.01%

Implementation suggestions

Establish a magnetic foreign matter control system, and it is recommended to add a magnetic filtration device before the drying process
For high nickel products (such as NCMH900604), the sodium content must be controlled to ≤0.030%
It is recommended to use the Karl Fischer method for moisture detection, and the control point is set in the pre-packaging process

GB/T 26300-2020 Referenced Document

GB/T 1479.1 Metallic powders—Determination of apparent density—Part 1:Funnal method
GB/T 19077 Particle size analysis by laser diffraction*， 2024-10-26 Update
GB/T 19587 Determination of the specific surface area of solids by gas adsorption using the BET method
GB/T 24533 Graphite negative electrode materials for lithium ion battery
GB/T 26300 Nickel cobalt manganese composite hydroxide
GB/T 5162 Metallic powders—Determination of tap density*， 2021-03-09 Update
GB/T 5314 Powders for powder metallurgical purposes.Sampling
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
JY/T 010 General principles of analytical scanning electron microscopy

GB/T 26300-2020 history

2020 GB/T 26300-2020 Nickel cobalt manganese composite hydroxide
2011 GB/T 26300-2010 Nickel cobalt manganese composite hydroxide