Standard No.:	GB/T 43092-2023
English Name:	Electrochemical performance test of lithium ion battery cathode materials—Test method for high temperature performance
Chinese Name:	锂离子电池正极材料电化学性能测试 高温性能测试方法
Chinese Classification:	H21    Metal physical property test method
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2023-09-07
Implemented on:	2024-4-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	8500 words
Translation Price(USD):	320.0
Delivery:	via email in 1~3 business day

Electrochemical performance test of lithium ion battery cathode materials - Test method for high temperature performance 1 Scope This document specifies the test method for high temperature performance of electrochemical performance test of lithium ion battery cathode materials, including high temperature storage test and high temperature cycle test. This document is applicable to the electrochemical performance test of cathode materials such as lithium cobalt oxide, lithium nickel cobalt manganese oxide, nickel cobalt aluminum oxide, lithium manganese oxide, lithium iron phosphate, lithium-manganese-rich layered oxides. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions 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 2900.1-2008 Electrotechnical terminology - Fundamental terms GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 20252-2014 Lithium cobalt oxide GB/T 31484-2015 Cycle life requirements and test methods for traction battery of electric vehicle 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2900.1-2008, GB/T 20252-2014, GB/T 31484-2015 and the following apply. 3.1 charge and discharge process of charging to the limited charging voltage with the specified current, and turn to constant voltage charge; standing for a period of time and discharging at a specified current to an end of discharge voltage 4 Symbols For the purposes of this document, the following symbols apply: C: the rated capacity of battery at a rate of discharge at which the cell gets discharged fully in 1 h; 1C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 1 h; 0.5C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 2 h; 0.33C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 3 h; 0.2C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 5 h; 0.1C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 10 h; 0.02C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 50 h; 0.01C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 100 h; 0.05C: the current corresponding to a rate of discharge at which the cell gets discharged fully in 20 h.

Contents Foreword I Introduction II 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Test method for high temperature performance - Button half cell potential method 6 Test method for high temperature performance - Pouch full cell potential method 7 Expression of test results 8 Tolerances regarding tests 9 Test report