GB/T 45327-2025 PDF English
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| GB/T 45327-2025 | English | 275 |
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Lithium-rich lithium iron oxide
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GB/T 45327-2025: Lithium-rich lithium iron oxide---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/GBT45327-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.160
CCS H 71
Lithium-rich lithium iron oxide
Issued on: FEBRUARY 28, 2025
Implemented on: SEPTEMBER 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Product classification... 5
5 Technical requirements... 5
6 Test methods... 7
7 Inspection rules... 10
8 Marks, packaging, transportation, storage, and accompanying documents... 12
9 Purchase order content... 13
Annex A (informative) X-ray diffraction pattern of lithium-rich lithium iron oxide.. 15
Lithium-rich lithium iron oxide
1 Scope
This document specifies the product classification, technical requirements, test methods,
inspection rules, marks, packaging, transportation, storage, accompanying documents,
and purchase order content for lithium-rich lithium iron oxide.
This document is applicable to lithium rich iron oxide, which is the lithium supplement
additive for positive electrode materials used in lithium-ion batteries.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 5162, Metallic powders -- Determination of tap density
GB/T 5211.6, General methods of test for pigments and extenders -- Part 6.
Determination of pH value of an aqueous suspension
GB/T 5314, Powders for powder metallurgical purposes -- Sampling
GB/T 6283, Chemical products -- Determination of water Karl-Fischer method
(general method)
GB/T 6388, Transport package shipping mark
GB/T 8170, Rules of rounding off for numerical values and expression and
judgement of limiting values
GB/T 19077, Particle size analysis by laser diffraction
GB/T 19587, Determination of the specific surface area of solids by gas adsorption
using the BET method
GB/T 42161, Electrochemical performance test of lithium iron phosphate -- Test
method for the initial discharge specific capacity and the initial efficiency
GB/T 44330, Lithium-ion battery cathode materials -- Determination of powder
compaction density
YS/T 1028.5, Methods for chemical analysis of lithium iron phosphate. Part 5.
Determination of calcium, magnesium, zinc, copper, lead, chromium, sodium,
aluminium, nickel, cobalt, manganese content. Inductively coupled plasma atomic
emission spectrometry
YS/T 1472.4, Methods for chemical analysis of lithium-rich manganese-based
cathode materials - Part 4.Determination of lithium, nickel, cobalt, sodium,
potassium, copper, calcium, iron, magnesium, zinc, aluminum, and silicon content -
Inductively coupled plasma atomic emission spectrometry
JCPDS1 (75-1253), Diffraction standard pattern of X-ray powder of lithium-rich
lithium iron oxide
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 complementary specific capacity of the lithium supplement
The difference between the first charge specific capacity and the first discharge specific
capacity under specified conditions.
3.2 moisture resistance performance
The ability to resist erosion from humid environments within a certain time and
humidity range.
NOTE. Expressed in terms of moisture absorption rate. The lower the moisture absorption rate, the
stronger the material's ability to resist erosion from humid environments, that is, the better its
moisture resistance.
4 Product classification
The products are divided into three categories based on the complementary specific
capacity of the lithium supplement. LFO-I, LFO-II, and LFO-III.
5 Technical requirements
5.1 Chemical composition
The chemical composition of the product shall comply with the provisions in Table 1.
If doping or coating modification is required for the product, the doping or coating
elements include but are not limited to one or more of Mg, Ti, Al, Co, Ni, Mn, Si, B,
etc. The content of doped or coated elements shall be determined through negotiation
between the supplier and the purchaser.
1 Joint Committee on Powder Diffraction Standards.
6.4 Moisture resistance performance
The moisture resistance performance test of the product shall be conducted according
to the method agreed upon by the supplier and the purchaser.
6.5 Appearance quality
The appearance quality of the product is inspected by visual inspection.
6.6 pH value
The determination of product pH value shall be carried out in accordance with the
provisions of GB/T 5211.6.
6.7 Tap density
The determination of product tap density shall be carried out in accordance with the
provisions of GB/T 5162.
6.8 Powder compaction density
The determination of compacted density of product powder shall be carried out in
accordance with the provisions of GB/T 44330.
6.9 Specific surface area
The determination of specific surface area of the product shall be carried out in
accordance with the provisions of GB/T 19587.
6.10 Particle size distribution
The determination of product particle size distribution shall be carried out in accordance
with the provisions of GB/T 19077.
6.11 Complementary specific capacity of the lithium supplement
The determination of complementary specific capacity of the lithium supplement of the
product shall be carried out in accordance with the provisions of GB/T 42161.Each
experimental step shall be conducted under environmental conditions with a relative
humidity of no more than 10% and a temperature of 20℃~30℃. The charging and
discharging system shall be as follows.
a) Static. not less than 6 hours;
b) Constant current charging current. 0.05 C;
c) Charging limit voltage. 4.2 V;
d) Termination current for constant voltage charging. 0.01 C;
The determination of residual alkali content in the product shall be carried out according
to the method agreed upon by the supplier and the purchaser.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The product shall be inspected by the supplier or a third party. Ensure that the
product quality meets the requirements of this document and the purchase order, and
fill in the accompanying documents.
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 purchase order, it shall be raised in writing to the supplier
within two months from the date of receipt of the product, and resolved through
consultation between the supplier and the purchaser. If arbitration is required, the
arbitration sampling shall be jointly conducted by both the supplier and the purchaser
at the purchaser.
7.2 Batching
The products shall be submitted for acceptance in batches. Each batch shall consist of
products of the same category produced in the same production cycle. The weight of
each batch shall not exceed 2 t. When the purchaser has special requirements for the
batch, they can be determined through negotiation between the supply and demand
sides.
7.3 Inspection items and sampling
7.3.1 Inspection classification
Inspection is divided into batch inspection and periodic inspection.
7.3.2 Batch by batch inspection
Each batch of products shall be inspected batch by batch.
7.3.3 Periodic inspection
Under normal production conditions, periodic inspection shall be conducted once
within a determined period. Periodic inspection shall be conducted once a month. When
the purchaser has special requirements, they can be determined through negotiation
between the supplier and the purchaser. When there are significant changes in raw
materials or production processes, or when production resumes after a long-term
shutdown, all items shall be inspected.
7.3.4 Inspection items and sampling
7.4.2 When the appearance quality inspection result of the product is unqualified, the
barrel (bag) product is judged as rejected.
7.4.3 Produce 6 test batteries according to the method specified in GB/T 42161.If the
performance of two or more batteries with complementary specific capacity of the
lithium supplement or initial discharge capacity does not meet the requirements of this
document, the batch of products shall be judged as rejected. But it is allowed to reinstall
6 additional batteries for repeated testing. If two batteries still fail to meet the
performance requirements of this document in terms of complementary specific
capacity of the lithium supplement or initial discharge capacity, the batch of products
shall be judged as rejected.
8 Marks, packaging, transportation, storage, and accompanying
documents
8.1 Marks
The outer packaging of the product shall have a trademark and label indicating.
a) Name and address of the supplier;
b) Product name;
c) Category;
d) Batch number;
e) Net weight;
f) Moisture proof words or signs;
g) Reference to this document;
h) Production date.
8.2 Packaging
The product is packaged in aluminum-plastic bags. After vacuum sealing with
thermoplastic, it can be packed into an outer packaging barrel, which can also be
determined through negotiation between the supplier and the purchaser.
8.3 Transportation
8.3.1 Product transportation labeling shall comply with the provisions of GB/T 6388.
During the transportation of the product, measures shall be taken to prevent damage to
the packaging, which may cause the product to become damp.
8.4 Storage
The product shall be stored in a non-corrosive and dry environment to avoid moisture.
The product has a shelf life of 1 year from the date of production.
8.5 Accompanying documents
Each batch of products shall be accompanied by accompanying documents, which shall
include not only supplier information, product information, document number, date of
manufacture or production, but also the following content.
a) The product quality assurance certificate includes the following contents.
The main performance and technical parameters of the product;
● Product features;
● All analysis and inspection results and conclusions with the seal of the supplier's
technical supervision department.
b) Product qualification certificate.
● Inspection items, results, and conclusions;
● Batch number;
● Production date;
● Inspection date;
● Inspector's signature or seal;
● Packaging and storage requirements.
c) Others.
9 Purchase order content
The purchase order for the products listed in this document shall include the following
contents.
a) Product name;
b) Category;
c) Batch number;
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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