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GB/T 41232.8-2024: Nanomanufacturing - Key control characteristics - Nano-enabled electrical energy storage - Part 8: Determination of water content in electrode nanomaterials - Coulometric Karl Fisher titration method
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Nanomanufacturing - Key control characteristics - Nano-enabled electrical energy storage - Part 8: Determination of water content in electrode nanomaterials - Coulometric Karl Fisher titration method
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GB/T 41232.8-2024
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Basic data | Standard ID | GB/T 41232.8-2024 (GB/T41232.8-2024) | | Description (Translated English) | Nanomanufacturing - Key control characteristics - Nano-enabled electrical energy storage - Part 8: Determination of water content in electrode nanomaterials - Coulometric Karl Fisher titration method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F19 | | Classification of International Standard | 07.030; 07.120 | | Word Count Estimation | 16,185 | | Date of Issue | 2024-10-26 | | Date of Implementation | 2025-05-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41232.8-2024: Nanomanufacturing - Key control characteristics - Nano-enabled electrical energy storage - Part 8: Determination of water content in electrode nanomaterials - Coulometric Karl Fisher titration method
---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/GBT41232.8-2024
ICS 07.030;07.120
CCSF19
National Standard of the People's Republic of China
Key Control Characteristics of Nanofabrication Nano-Energy Storage
Part 8.Determination of water content in nanoelectrode materials
Karl Fischer coulometric titration
Released on October 26, 2024, implemented on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 2
5 Reagent 2
5.1 Coulometric Karl Fischer Reagent 3
5.2 Anhydrous methanol 3
5.3 Carrier Gas 3
5.4 Karl Fischer Coulometric Titration Standard Sample 3
6 Instruments 3
6.1 Karl Fischer Coulometric Titrator 3
6.2 Evaporator 3
6.3 Analytical Balance 4
6.4 Sample container 4
6.5 Microsyringe 4
6.6 Dew point meter 4
7 Sample handling and sampling 4
7.1 Sample Processing 4
7.2 Sampling 4
8.Operation Step 4
8.1 Test Preparation 4
8.2 Test Step 5
8.3 Moisture content 5
9 Precision 6
9.1 Overview 6
9.2 Repeatability 6
9.3 Reproducibility 6
10 Test Report 6
Appendix A (Informative) Example of Determination and Analysis of Moisture Content in Nano-Lithium Iron Phosphate Samples 7
Reference 10
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 is required.
This document is part 8 of GB/T 41232 “Nanomanufacturing Key Control Characteristics Nano Energy Storage”. GB/T 41232 has been published.
The following parts.
--- Part 2.Density test of nano cathode materials;
--- Part 3.Test of contact resistivity and coating resistivity of nanomaterials;
--- Part 6.Determination of carbon content in nanoelectrode materials - Infrared absorption method;
--- Part 8.Determination of water content in nanoelectrode materials - Karl Fischer coulometric titration method.
This document is equivalent to IEC TS62607-4-8.2020 "Critical control characteristics of nanomanufacturing Part 4-8.Nano-energy storage nanomaterials"
The document type was adjusted from IEC technical specification to my country's national standard.
The following minimal editorial changes have been made to this document.
--- To coordinate with the existing standards, the name of the standard is changed to "Key Control Characteristics of Nanomanufacturing Nano Energy Storage Part 8.Nanoelectromagnetic
Determination of water content in electrode materials—Karl Fischer coulometric titration.
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 National Technical Committee on Nanotechnology Standardization (SAC/TC279).
This document was drafted by. Shenzhen Defang Nanotechnology Co., Ltd., National Center for Nanoscience and Technology, Ningbo Fengcheng Advanced Energy Materials
Research Institute Co., Ltd., Chongqing University, Shenzhen Institute of Standards and Technology, Foshan Defang Nanotechnology Co., Ltd., Shenzhen Defang Chuangyu New
Energy Technology Co., Ltd., Metrohm China Ltd., Qujing Defang Nanotechnology Co., Ltd., Shandong Jinggong Electronics Technology Co., Ltd.
Limited Company, Shenzhen Feimo Technology Co., Ltd.
The main drafters of this document are. Kong Lingyong, Sun Yan, Ge Guanglu, Wang Yaoguo, Jiang Yao, Gao Jie, Wang Yuanhang, Wan Yuanxin, Chen Yanyu, Fan Yangbo,
Pei Xianyinan, Li Yineng, Huang Shaozhen, Liu Binhua, Zhong Likun, Qiu Zhiping, Jin Qingqing, Zhou Yonghui, Zhong Wen, Gong Hao, Gong Yan, Wei Dong, Li Xinda,
Kuang Meng.
introduction
Compared with general materials, nano energy storage materials have shown superior performance. In order to accelerate the healthy development of the emerging industry of nano energy storage,
With the development of nano-energy storage materials, standardization of performance testing methods has become an urgent task in the industry.
The System Nanotechnology Committee (IEC /TC113) has issued eight standardized documents on the performance testing of nano energy storage materials.
GB/T 41232 "Key Control Characteristics of Nanomanufacturing Nano-Energy Storage" refers to
The method standard for testing the physical and chemical properties of nano-conductive energy storage materials is planned to consist of eight parts.
--- Part 1.Electrochemical performance test of nano cathode materials - two-electrode battery method. The purpose is to establish the use of two-electrode battery
Relevant regulations for testing the electrochemical properties of nano cathode materials.
--- Part 2.Density test of nano cathode materials. The purpose is to establish relevant regulations for testing the density of nano cathode materials.
--- Part 3.Test of contact resistivity and coating resistivity of nanomaterials. The purpose is to establish the measurement of contact resistivity of nano-electrode materials.
Relevant regulations on resistivity and coating resistivity.
--- Part 4.Thermal properties test of nanomaterials by needle puncture method. The purpose is to establish the use of needle puncture method to test the thermal properties of nano energy storage devices.
Regulations on out-of-control levels.
--- Part 5.Electrochemical performance test of nano cathode materials - three-electrode cell method. The purpose is to establish the three-electrode cell method.
Relevant regulations for testing the electrochemical properties of nano cathode materials.
--- Part 6.Determination of carbon content in nanoelectrode materials by infrared absorption method. The purpose is to establish the use of infrared spectroscopy absorption method
Regulations for determining the carbon content of nanoelectrode materials.
--- Part 7.Determination of magnetic impurities in nano-cathode materials ICP-OES method. The purpose is to establish the use of inductively coupled plasma
Regulations on the determination of magnetic impurities in nano cathode materials by ICP-OES.
--- Part 8.Determination of water content in nanoelectrode materials by Karl Fischer coulometric titration.
Regulations on the determination of water content in nanoelectrode materials by coulometric titration.
Nano energy storage technology has been widely used in many fields such as portable electronic devices, electric vehicles and energy storage systems.
The rapid development has put forward higher requirements on the performance of nano energy storage devices. The performance of energy storage devices mainly depends on the nano electrode materials.
The moisture content of nanoelectrode materials is an important quality control indicator. Moisture can significantly affect the electrical properties of nano energy storage devices.
Energy, cycle performance and safety performance. Excessive moisture content in electrode materials will have a significant impact on both active materials and batteries, and may affect their
performance or safety features.
There are many methods for determining the water content. The Karl Fischer method is suitable for direct determination of the water content in gaseous, liquid or solid samples.
There are two methods for determination. Karl Fischer volumetric titration and Karl Fischer coulometric titration.
This is an absolute method that determines the moisture content based on the amount of electricity consumed during the test. This method can detect moisture content as low as 0.0001%.
Used for determination of trace moisture content in nanoelectrode materials.
This document aims to compare the performance of carbon nanomaterials without any additives [e.g. carbon black (CB), carbon nanotubes or carbon fibers] or organic binders.
raw materials [e.g., lithium cobalt oxide (LCO), lithium nickel cobalt aluminum oxide (LCO)] of the agent [e.g., polyvinylidene fluoride (PVDF) or styrene butadiene rubber (SBR)]
The characteristics of lithium manganese phosphate (LCA), lithium nickel cobalt manganese oxide (NCM), lithium iron phosphate (LFP) and lithium iron manganese phosphate (LFMP)] guide the selection of these raw materials.
It is not suitable for selection and as a quality control method for fully formulated electrode materials, but is not suitable for evaluating electrode materials in end products.
Key Control Characteristics of Nanomanufacturing Nano-Energy Storage
Part 8.Determination of water content in nanoelectrode materials
Karl Fischer coulometric titration
1 Scope
This document describes a method for determining the water content of nanoelectrode materials in nanoenergy storage devices using Karl Fischer coulometric titration.
method.
This document contains sample preparation, experimental procedures for determining the properties of nanoelectrode materials, and data analysis methods.
Note. This method has an accuracy of up to 0.0001%. The optimal measurement range is 0.01% to 1%.
This document does not apply to samples that can react with the main components of Karl Fischer reagents to produce water or react with elemental iodine or iodide ions.
Samples that react.
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.
(General method)]
Note. GB/T 6283-2008 Determination of water content in chemical products - Karl Fischer method (general method) (ISO 760.1978, NEQ)
ISO 12492 Rubber, raw - Determination of water content by the Karl Fischer method
Note. GB/T 37191-2018 Raw rubber - Determination of moisture content - Karl Fischer method (ISO 12492.2012, MOD)
3 Terms and Definitions
The following terms and definitions apply to this document.
The URLs for terminology databases used for standardization maintained by ISO and IEC are as follows.
3.1
nanoscale
The size range is between 1nm and 100nm.
NOTE This size range generally, but not exclusively, exhibits properties that cannot be extrapolated from larger sizes.
[Source. GB/T 30544.1-2014, 2.1, with modifications]
3.2
nanomaterial
Materials with any external dimension, internal or surface structure at the nanometer scale.
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