中国标准化Issue(10)：142-147,6.DOI:10.3969/j.issn.1002-5944.2024.10.022
GB/T 41704-2022国家标准解读
Interpretation of National Standard GB/T 41704-2022
王玉娇1
作者信息
- 1. 矿冶科技集团有限公司||北京当升材料科技股份有限公司
- 折叠
摘要
Abstract
The content of magnetic impurities and residual alkali in cathode materials for lithium ion battery are mandatory inspection indicators for supply.The testing methods for the two technical indicators have a long process and contain many technical requirements.It is necessary to provide a detailed interpretation of the standard methods in GB/T 41704-2022.This article interprets the testing methods for magnetic impurities content and residual alkali content in cathode materials for lithium ion battery from the perspective of standard structure and main content.It explains the principles and basis of each step in the standard methods in the aspects of magnetic separation conditions,number of magnetic impurities,dissolution of magnetic impurities elements,and testing methods for element concentration in magnetic impurities testing,and explains the principles and basis of each step in the standard methods in the aspects of residual alkali extraction conditions,titration process,selection of equivalent points,and calculation method of residual alkali content in residual alkali content testing,providing reference and guidance for relevant testers to familiarize themselves with and apply the methods.关键词
锂离子电池正极材料/磁性异物/残余碱/检测方法/国家标准Key words
cathode materials for lithium ion battery/magnetic impurities/residual alkali/test methods/national standard引用本文复制引用
王玉娇..GB/T 41704-2022国家标准解读[J].中国标准化,2024,(10):142-147,6.
