GB/T 26029-2023 (English Version)

Standard No.: GB/T 26029-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 26029-2023
Replace: GB/T 26029-2010

Scope: This document specifies the grades and codes, technical requirements, test methods, inspection rules, packaging, marking, transportation, storage, accompanying documents and order form contents of nickel, cobalt and manganese three-element composite oxides. This document is applicable to nickel, cobalt and manganese three-element composite oxides.

Introduction

1. Background and significance of standard revision

GB/T 26029-2023 Nickel, Cobalt and Manganese Tri-element Composite Oxides is a comprehensive revision of the original standard GB/T 26029-2010, which mainly optimizes the product chemical formula, brand naming rules and technical indicators. This standard is applicable to the field of lithium-ion battery positive electrode materials and is of great significance to promoting the development of the new energy industry.

2. Comparison of standard frameworks

Technical indicators	GB/T 26029—2010	GB/T 26029—2023
Chemical formula	$\mathrm{Ni}_{x}\mathrm{Co}_{y}\mathrm{Mn}_{1-xy}\mathrm{O}_{z}$ (not clearly defined)	$\mathrm{Ni}_{x}\mathrm{Co}_{y}\mathrm{Mn}_{1-xy}\mathrm{O}_{z}$ (clearly defined as $x+y<1$ and $1	\leq z \leq 2-x$）
Grade naming	No clear rule	NiCoMnO plus numbers, specifically the first two digits are nickel, the middle two digits are cobalt, and the last two digits are manganese content
Impure element requirements	Cr index is not included	New Cr content requirement (≤0.005%), and Cl⁻ and Si indexes are deleted

3. Interpretation of Technical Requirements and Application Suggestions

3.1 Chemical Composition Control

The contents of the main elements nickel, cobalt and manganese must meet the dual indicators of mass fraction and substance amount fraction, with a tolerance range of ±1%. It is recommended that enterprises use ICP-OES technology for precise analysis during the production process.

3.2 Impurity element control

New Cr content requirements, it is necessary to pay attention to avoid the introduction of Cr impurities in the process. Enterprises can refer to the YS/T 928 series of standards and use inductively coupled plasma mass spectrometry (ICP-MS) to detect trace metals.

3.3 Physical property optimization

Bulk density ≥0.40 g/cm³, tap density ≥1.20 g/cm³. It is recommended to use the funnel method and tap density tester for measurement, and optimize the particle morphology to improve product consistency.

3.4 Magnetic foreign matter and moisture control

The content of magnetic foreign matter is ≤0.00001%, it is recommended to use GB/T 41704 standard for testing. The moisture content must be ≤1%, and the Karl Fischer method or weight loss method is recommended.

3.5 Appearance Quality Inspection

The product should be free of lumps, visible inclusions and consistent in color. It is recommended to establish a strict visual inspection process and conduct regular spot checks to ensure product quality.

4. Implementation Suggestions

Standard Promotion:Organize technical personnel to conduct training to familiarize themselves with the requirements and changes of the new standard.
Equipment Upgrade:Purchase advanced analytical instruments (such as ICP-MS, laser particle size analyzer) to meet the new testing needs.
Process Optimization:Adjust production parameters according to the new indicators, focusing on chemical composition control and impurity removal technology.
Quality System:Improve the internal quality management system of the enterprise to ensure that the entire process meets the standard requirements.
Risk Assessment:Carry out risk analysis for new indicators (such as Cr content) and formulate emergency plans.

GB/T 26029-2023 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 26300-2020 Nickel cobalt manganese composite hydroxide
GB/T 41704 Test methods of cathode materials for lithium ion battery—Determination of magnetic impurities content and residual alkali content
GB/T 5162 Metallic powders—Determination of tap density
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 0584 General Rules for Analytical Methods of Scanning Electron Microscopy
YS/T 1006.1 Methods for chemical analysis of lithium nickel cobalt manganese oxide.Part 1:Determination the total of nickel cobalt manganese content.EDTA disodium salt titration
YS/T 928.3 Methods for chemical analysis of nickel cobalt manganese composite hydrogenoxide.Part 3: Determination of nickel,cobalt,manganese content.Inductively coupled plasma atomic emission spectromertric
YS/T 928.4 Methods for chemical analysis of nickel cobalt manganese composite hydrogenoxide.Part 4: Determination of iron,calcium,magnesium,copper,zinc,silicon,aluminium,sodium contents.Inductively coupled plasma atomic emission spectromertric
YS/T 928.5 Methods for chemical analysis of nickel cobalt manganese composite hydroxide.Part 5:Determination of lead contents.Inductively coupled plasma mass spectrometry

GB/T 26029-2023 history

2023 GB/T 26029-2023 Nickel, cobalt and manganese three-element composite oxide
2011 GB/T 26029-2010 Nickel cobalt manganese composite oxide