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GB/T 33822-2025: Nano lithium iron phosphate
Status: Valid GB/T 33822: Evolution and historical versions
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Nano lithium iron phosphate
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GB/T 33822-2025
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| GB/T 33822-2017 | English | 499 |
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GB/T 33822-2017
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PDF similar to GB/T 33822-2025
Standard similar to GB/T 33822-2025 GB/T 26524 GB/T 33828 GB/T 33827 Basic data | Standard ID | GB/T 33822-2025 (GB/T33822-2025) | | Description (Translated English) | Nano lithium iron phosphate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G12 | | Classification of International Standard | 71.060.50 | | Word Count Estimation | 22,299 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 33822-2017 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 33822-2025: Nano lithium iron phosphate---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/GBT33822-2025
ICS 71.060.50
CCSG12
National Standard of the People's Republic of China
Replaces GB/T 33822-2017
Nano lithium iron phosphate
Released on June 30, 2025
Implementation on January 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Technical Requirements 2
5 Detection Methods 4
6 Inspection Rules 6
7 Packaging, marking, transportation and storage 8
8 Order Contents 9
Appendix A (Normative) Chemical Analysis Methods for Nano-lithium Iron Phosphate. Determination of Main and Impurity Elements—Inductively Coupled Plasma
Emission Spectroscopy 10
Appendix B (Normative) Number of magnetizable metal impurity particles 13
Appendix C (Normative) pH 14
Appendix D (Normative) Iron Ion Dissolution Rate 15
Reference 17
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 33822-2017 "Nano-lithium iron phosphate". Compared with GB/T 33822-2017, except for the structural adjustment and editing
In addition to the functional changes, the main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2017 edition);
b) Added the terms and definitions of “magnetic foreign matter” and “compacted density” (see 3.1 and 3.4);
c) Deleted “specific surface area”, “pH value”, “rate performance”, “high temperature discharge performance”, “high temperature cycle performance” and “low temperature discharge performance”
Terms and definitions (see 3.3, 3.5, 3.8, 3.10, 3.11 and 3.12 of the.2017 edition);
d) The definition of the term "cyclic performance" has been changed (see 3.8, 3.9 of the.2017 edition);
e) Change “volume resistivity” to “powder resistivity” (see 3.5, 3.4 of the.2017 edition), and change “Coulomb efficiency” to “initial charge and discharge
Efficiency” (see 3.7, 3.7 of the.2017 edition);
f) Changed the technical requirements for “impurity elements” and “carbon content” (see Table 1, Table 1 of the.2017 edition);
g) The technical requirement for “ferric iron content” has been deleted (see 4.2.2 of the.2017 edition);
h) Added technical requirements for “magnetic foreign matter” (see Table 2);
i) Changed the “SEM particle size distribution of primary particles”, “Particle size distribution of secondary agglomerated particles”, “Appearance density”, “Tapped density”, “Specific gravity”
Area", "Powder resistivity", "Iron ion dissolution rate", "First discharge specific capacity", "First charge and discharge efficiency", "Room temperature cycle performance" and
Technical requirements for “high temperature cycle performance” (see 4.3.1, 4.3.2, 4.3.4, 4.3.5, 4.3.7, 4.3.8, 4.5, 4.6.1, 4.6.2, 4.6.3 and
4.6.4, 4.3.1, 4.3.2, 4.3.4, 4.3.5, 4.3.6, 4.3.7, 4.5, 4.6.1, 4.6.2, 4.6.4 and 4.6.6 of the.2017 edition);
j) Added the technical requirements for “compacted density” (see 4.3.6);
k) Deleted the technical requirements of “rate performance”, “high temperature discharge performance” and “low temperature discharge performance” (see 4.6.3, 4.6.5 of the.2017 edition)
and 4.6.7);
l) Changed the test methods for "carbon content", "moisture content", "cycle performance" and "high temperature cycle performance" (see 5.2.5, 5.2.6, 5.6.3,
5.6.4, 5.2.6, 5.2.7, 5.6.4 and 5.6.6 of the.2017 edition);
m) Added the test methods of “compacted density” and “number of magnetizable metal impurity particles” (see 5.3.6 and 5.2.7);
n) Deleted the test methods of “rate performance”, “high temperature discharge performance” and “low temperature discharge performance” (see 5.6.3, 5.6.5 of the.2017 edition)
and 5.6.7);
o) Change “batch inspection” to “factory inspection”, and change “periodic inspection” to “type inspection” (see Chapter 6,.2017 edition).
Chapter 6);
p) Deleted the requirements for product batch weight and packaging weight (see 6.2 and 7.1, 6.2 and 7.1.1 of the.2017 edition);
q) The “Items and Quantities of Factory Inspection and Type Inspection” have been changed (see Table 3, Table 2 of the.2017 edition);
r) Changed the requirements for “judgment of test results” (see 6.5.2 and 6.5.3, 6.5.2 and 6.5.3 of the.2017 edition);
s) Deleted the normative appendix "Chemical analysis method of nano-lithium iron phosphate. determination of iron content - point titration method" and "Nano-lithium iron phosphate
Lithium chemical analysis method. determination of phosphorus content - quinolyl molybdate weight method" and "nano lithium iron phosphate simulation battery test" (see
Appendices A, B, and G of the.2017 edition);
t) Modified the normative appendix “Chemical analysis method of nano-lithium iron phosphate. determination of lithium, iron, phosphorus, nickel, copper, zinc, chromium, calcium, sodium and potassium content”
Determination --- Inductively Coupled Plasma Optical Emission Spectrometry" and "Iron Ion Dissolution Rate" (see Appendix A and Appendix D,.2017 Edition
Appendix C and Appendix F);
u) Added the normative appendix “Number of magnetizable metal impurity particles” (see Appendix B).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Chinese Academy of Sciences.
This document is under the jurisdiction of the Nanomaterials Subcommittee of the National Nanotechnology Standardization Technical Committee (SAC/TC279/SC1).
This document was drafted by. Shenzhen Defang Nanotechnology Co., Ltd., Metallurgical Industry Information Standards Research Institute, Guangdong Brunp Recycling Science
Technology Co., Ltd., Qujing Defang Nanotechnology Co., Ltd., Guizhou Zhongwei Xingyang Energy Storage Technology Co., Ltd., Hunan Yuneng New Energy Battery Materials
Materials Co., Ltd., Boyi (Shenzhen) Industrial Technology Co., Ltd., Changzhou Fanqun Drying Equipment Co., Ltd., Zhongke Lithium Battery New Energy Co., Ltd.
company.
The main drafters of this document are. Kong Lingyong, Sun Yan, Tian Zijian, Yu Haijun, Chen Yanyu, Ting Shuo, Chen Tao, Jin Qingqing, Li Qian, Zhan Tianyi,
Li Yineng, Xia Mengliang, Wan Yuanxin, Yang Yunguang, Zhang Weixu, Qu Lian, Hu Yungu, Zhang Yuying, Tan Meijuan, and Zhang Zhengliang.
This document was first published in.2017 and this is the first revision.
Nano lithium iron phosphate
1 Scope
This document specifies the technical requirements, inspection rules, packaging, marking, transportation, storage and order contents of nano lithium iron phosphate.
Corresponding test methods.
This document applies to the manufacture and inspection of nano-lithium iron phosphate, the positive electrode material for lithium-ion batteries.
Molecular formula. LiFePO4.
Relative molecular mass. 157.755 (according to the 2023 International Atomic Mass Standard).
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 1479.1 Metal powders - Determination of bulk density - Part 1.Funnel method
GB/T 5162 Determination of tap density of metal powders
GB/T 5314 Powder sampling method for powder metallurgy
GB/T 6388 Shipping and Receiving Marks for Transport Packages
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 19077 Particle size analysis by laser diffraction method
GB/T 19587 Determination of specific surface area of solid substances by gas adsorption BET method
GB/T 41232.6 Nanomanufacturing Key Control Characteristics Nano-energy Storage Part 6.Determination of Carbon Content in Nano-electrode Materials
Infrared absorption method
GB/T 41232.8 Nanomanufacturing Key Control Characteristics Nano Energy Storage Part 8.Determination of Moisture Content in Nanoelectrode Materials
Karl Fischer coulometric titration
GB/T 41704-2022 Lithium-ion battery positive electrode material test method Determination of magnetic foreign matter content and residual alkali content
GB/T 42161 Lithium iron phosphate electrochemical performance test method for first discharge specific capacity and first charge and discharge efficiency
GB/T 42260 Lithium iron phosphate electrochemical performance test cycle life test method
GB/T 44330 Determination of compacted density of cathode material powder for lithium-ion batteries
GB/T 45324 Determination of resistivity of cathode material powder for lithium-ion batteries
JCPDS1)(40-1499) Lithium Iron Phosphate X-ray Powder Diffraction Standard Spectrum
3 Terms and Definitions
The following terms and definitions apply to this document.
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