GB/T 30835-2014 PDF English
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| GB/T 30835-2014 | English | 430 |
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Lithium iron phosphate-carbon composite cathode materials for lithium ion battery
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GB/T 30835-2014: Lithium iron phosphate-carbon composite cathode materials for lithium ion battery
---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/GBT30835-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.050
Q 53
Lithium iron phosphate-carbon composite cathode materials
for lithium ion battery
Issued on. JUNE 24, 2014
Implemented on. APRIL 01, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
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 Classification and codes... 5
5 Technical requirements... 6
6 Test methods... 7
7 Inspection rules... 9
8 Packaging, marks... 11
9 Storage and transportation... 11
Annex A (normative) Method for determination of lithium content (excluding carbon
content)... 13
Annex B (normative) Method for determination of iron content (excluding carbon
content)... 17
Annex C (normative) Method for determination of phosphorus content (excluding
carbon content)... 21
Annex D (informative) Method for determination of crystal structure... 26
Annex E (normative) Method for determination of iron ion dissolution rate... 29
Annex F (normative) Method for determination of first coulombic efficiency, first
reversible specific capacity, rate performance... 33
Annex G (normative) Method for determination of conductivity... 38
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee on Steel
of Standardization Administration of China (SAC/TC 183).
The drafting organizations of this Standard. Shenzhen Bettery New Energy Materials
Co., Ltd., Metallurgical Industry Information Standards Research Institute.
Main drafters of this Standard. Yue Min, Huang Youyuan, Liang Qi, Cheng Lin, He
Xueqin, Wang Zheng, Liu Xiuming, Chen Nanmin, Wu Qiang, Li Xiaojing, Song Caibo,
Guo Eming, Wang Yuhui.
Lithium iron phosphate-carbon composite cathode materials
for lithium ion battery
1 Scope
This Standard specifies the terms and definitions, classification and codes, technical
requirements, test methods, inspection rules and packaging, marking, storage and
transportation for lithium iron phosphate-carbon composite cathode materials for
lithium ion battery.
This Standard applies to lithium iron phosphate-carbon composite cathode materials for
lithium ion battery.
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 191, Packaging and storage marks
GB/T 5162, Metallic powders -- Determination of tap density
GB/T 6283, Chemical products -- Determination of water Karl-Fischer method
(general method)
GB/T 6388, Transport package shipping mark
GB/T 6682, Water for analytical laboratory use -- Specification and test methods
GB/T 9724, Chemical reagent -- General rule for the determination of pH
GB/T 12805, Laboratory glassware -- Burettes
GB/T 13732, General rules for sampling inspection of bulk materials with uniform
size
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 lithium iron phosphate-carbon composite cathode materials
Lithium-ion battery cathode material composed of lithium iron phosphate and carbon
with an olivine structure. Lithium iron phosphate belongs to the orthorhombic crystal
system. It has a one-dimensional lithium embedded channel.
4 Classification and codes
4.1 Product classification
Lithium iron phosphate-carbon composite cathode materials are divided into energy
type and power type according to charge and discharge characteristics and usage
requirements, represented by LFP@C-E and LFP@C-P respectively.
5 Technical requirements
5.1 Appearance
The product appearance shall be gray, black or brown powder with uniform color and no lumps.
5.2 Performance requirements
The physical and chemical properties, electrochemical properties and restricted
substance content of lithium iron phosphate-carbon composite cathode materials for
lithium ion battery shall comply with the provisions of Table 2.
6 Test methods
6.1 Appearance
Visually observe under natural light conditions.
6.2 Particle size D50
Determine according to the determination method specified in GB/T 19077.1.
6.3 Moisture content
Determine the moisture content according to the method specified in GB/T 6283 for
direct potentiometric titration.
6.5 BET specific surface area
The BET specific surface area of powder is measured according to the volumetric
method specified in GB/T 19587.
6.6 Tap density
Measure according to the measurement method specified in GB/T 5162.
6.7 Powder compacted density
The measurement is carried out according to the measurement method specified in
Annex L of GB/T 24533-2009.
6.13 Iron ion dissolution rate
Measure according to the measurement method specified in Annex E.
6.14 First coulombic efficiency
Measure according to the measurement method specified in Annex F.
6.15 First reversible specific capacity
Measure according to the measurement method specified in Annex F.
6.16 Rate performance
Measure according to the measurement method specified in Annex F.
6.17 Conductivity
Measure according to the measurement method specified in Annex G.
6.18 Restricted substance content
The measurement is carried out according to the measurement method specified in IEC
62321.
7 Inspection rules
7.1 Sampling method
7.1.1 Sampling
7.1.1.1 Lithium iron phosphate-carbon composite cathode materials for bagged lithium-
ion batteries shall be sampled in accordance with GB/T 13732.Open the bag of lithium
iron phosphate-carbon composite cathode material to be collected in a dry environment.
Use a clean stainless steel sampling drill to insert into the bag along the axis. The
insertion depth shall not be less than 4/5 of the depth of the sampling bag. Samples are
taken within 20 mm around the central axis of the material in the bag.
7.1.2 Sample label
After the sample is placed in the PVC sample jar, a label is immediately attached to the
outer wall. The label includes the following.
7.1.3 Storage of samples
7.1.3.1 Samples shall be sealed and stored in anti-breakage bags, rain-proof, moisture-
proof and other environments.
7.2 Inspection
7.2.1 Exit-factory inspection
Inspect the particle size, carbon content, moisture content, BET specific surface area,
tap density, electrochemical performance, iron ion dissolution amount, conductivity and
other indicators of each batch of samples. They can be shipped only after passing the
inspection.
7.3 Acceptance rules
7.3.1 Products that meet all the technical indicators required by a certain category in
Table 2 are qualified products. If an indicator fails to meet the requirements of this
category, double samples shall be taken from the sampling bags of the same batch of
products to re-inspect the unqualified items.
7.3.2 The inspection department of the manufacturer shall ensure that the products
shipped meet the requirements of this Standard. When each batch of products leaves
the factory, a product quality inspection report is sent to the recipient.
7.3.3 The consignee has the right to accept products in accordance with this Standard
and the right to reject products that do not meet the requirements of this Standard.
8 Packaging, marks
8.1 Pack in a net weight of 25 kg per bag. Special packaging requirements shall be
agreed upon by both parties.
8.2 Packaging is done in a dry environment. First put the product into waterproof
packaging. Special packaging requirements are agreed between the supplier and the
purchaser.
8.3 The packaged products are then packaged in composite bags, plastic barrels, paper
barrels, etc.
8.4 The marking of lithium iron phosphate-carbon composite cathode materials for
lithium ion battery shall comply with the requirements in GB/T 191.There shall be an
eye-catching mark on the front of each product packaging bag. The mark includes the
following.
9 Storage and transportation
9.1 Product transportation marks shall comply with the regulations on transportation
packaging receipt and delivery markings in GB/T 6388.
9.2 Products shall be stored in ventilated and dry warehouses.
9.3 Products shall be stacked neatly and cleanly. Registered trademarks, production
batch numbers, production dates and other marks shall be clear and easy to identify.
9.5 During storage and transportation, the packaging of the product shall be kept clean
and undamaged. Any product that leaks out of the bag must not be returned to the bag.
9.6 The supplier shall provide the safety data sheet (MSDS) and safety label of this
product.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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