GB/T 44330-2024Lithium-ion battery cathode materials—Determination of powder compaction density (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights.

This document was proposed by China Nonferrous Metals Industry Association.

This document shall be under the jurisdiction of National Technical Committee on Non- ferrous metals of Standardization Administration of China (SAC/TC 243).

The drafting organizations of this document: Xiamen Xiatung New Energy Materials Co., Ltd., Yuanneng Technology (Xiamen) Co., Ltd., Contemporary Amperex Technology Co., Ltd., Hubei Wanrun New Energy Technology Co., Ltd., Guangdong Brunp Recycling Technology Co., Ltd., Beijing Dangsheng Materials Technology Co., Ltd., Chengdu Bamo Technology Co., Ltd., BASF Shanshan Battery Materials Co., Ltd., Zhejiang Youshan New Materials Technology Co., Ltd., Foshan Defang Nanotechnology Co., Ltd., Ningbo Rongbai New Energy Technology Co., Ltd., GEM (Wuxi) Energy Materials Co., Ltd., Jiangmen Keheng Industrial Co., Ltd., Hunan Zhongwei New Energy Technology Co., Ltd., Sichuan Saike Testing Technology Co., Ltd., Shenzhen Defang Chuangyu New Energy Technology Co., Ltd., Fu'an Qingmei Energy Materials Co., Ltd., Fujian Zijin Lithium Yuan Materials Technology Co., Ltd., Shenzhen Zhongxinneng Technology Co., Ltd., Ningde New Energy Technology Co., Ltd., Shenzhen World New Energy Co., Ltd., Yibin Libao New Materials Co., Ltd., Dongguan New Energy Technology Co., Ltd., Zhejiang Ruibang Technology Co., Ltd., Shenzhen Qingyan Lithium Technology Co., Ltd., Chizhou Sean New Materials Technology Co., Ltd.

Main drafters of this document: Zeng Leiying, Wei Liying, Yang Fan, Yang Xiaolu, Qi Qiongqiong, Luo Dongsheng, Cheng Xiaoxue, Wan Sicheng, Chen Yanbin, Pei Xuelian, Chen Shuang, Xiong Yongzhao, Qiu Zhiping, Yan Xufeng, Peng Li, Yang Fan, Ting Shuo, Sun Ping, Pei Xianyinan, Ye Yuanbin, Li Zhen, Li Liang, Zheng Huangshun, Liu Xiangxiong, Zhang Bin, Zhu Mengsi, Hu Zhiping, Chen Jianjun, Ma Ruiqiang, Zhao Zhian.

Lithium-ion battery cathode materials - Determination of powder compaction density

1 Scope

This document describes the principle, reagents and materials, instruments and equipment, samples, test procedures, test data processing, precision, test report, etc. of the method for determining the compaction density of lithium-ion battery positive electrode material powder.

This document is applicable to the determination of compaction density of lithium-ion battery positive electrode material powder.

2 Normative references

GB/T 8170

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

4 Principle

Weigh a certain mass of the powder material to be tested. Use external force to compress it. During the compression process, the gaps between the powders are filled. The contact area between the particles increases. This causes attraction between atoms and enhances the mechanical fit between particles, thus forming a compact with a certain density and strength. The volume of the compact is calculated by measuring the thickness of the compact and combining it with the inner diameter of the mold. The compaction density of the powder material under a certain pressure is further calculated.

5 Reagents and materials

5.1 Anhydrous ethanol: analytically pure. 5.2 Dust-free paper. 5.3 Weighing paper.

6 Instruments and equipment