GB/T 37201-2018 in English

VALID

Electrochemical performance test of lithium nickel cobalt manganese oxide—Test method for discharge specific capacity and charge-discharge coulombic efficiency of the first cycle

Issued on:2018-12-28
Implemented on:2019-11-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
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Standard No:	GB/T 37201-2018
Document status:	VALID
Title in English:	Electrochemical performance test of lithium nickel cobalt manganese oxide—Test method for discharge specific capacity and charge-discharge coulombic efficiency of the first cycle
Title in Chinese:	镍钴锰酸锂电化学性能测试首次放电比容量及首次充放电效率测试方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-12-28
Implemented on:	2019-11-01
ICS Classification:	77.160-Powder metallurgy
Chinese Classification:	H21-Metal physical property test method
Professional Classification:	GB-National Standard
Related Keywords:	nickel cobalt manganese oxide electrochemical performance test first discharge specific capacity testing test indicators first discharge first discharge capacity manganese oxide test method
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《GB/T 37201-2018镍钴锰酸锂电化学性能测试首次放电比容量及首次充放电效率测试方法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC4（全国有色金属标准化技术委员会粉末冶金分会）执行，主管部门为中国有色金属工业协会。

Introduction

1. Standard Overview

GB/T 37201-2018 "Test Method for First Discharge Specific Capacity and First Charge and Discharge Efficiency of Nickel Cobalt Manganese Oxide Electrochemical Performance Test" is a standard formulated for the performance test of lithium-ion battery positive electrode material - nickel cobalt manganese oxide (NCM). This standard mainly stipulates the test methods for the first discharge specific capacity and first charge and discharge efficiency of NCM materials, and is applicable to the research and development, production and quality control of lithium-ion battery positive electrode materials.

2. Comparison of standard frameworks

Standard dimensions	GB/T 37201—2018	Comparative analysis
Scope of application	Lithium-ion battery positive electrode material lithium nickel cobalt manganese oxide	Specially used for NCM materials, covering R&D, production and testing
Test indicators	First discharge specific capacity and first charge and discharge efficiency	Highlight the first cycle characteristics and provide data support for material optimization
Test methods	Including electrode preparation, battery assembly and performance testing	Standardized experimental process for easy operation and comparison of results

3. Interpretation of key technical indicators

First discharge specific capacity (C): Refers to the ratio of the amount of electricity released by the battery during the first discharge process to the mass of the active material, in mA·h/g. The calculation formula is as follows:

$$ C = \frac{Q_{D1}}{m} $$

Wherein, $Q_{D1}$ is the first discharge capacity, and $m$ is the mass of lithium nickel cobalt manganese oxide.

First charge and discharge efficiency (η): Refers to the ratio of the first discharge amount to the first charge amount, and the calculation formula is as follows:

$$ \eta = \frac{Q_{D1}}{Q_{C1}} \times 100\% $$

Wherein, $Q_{C1}$ is the first charge capacity.

4. Implementation Suggestions

Equipment Selection: Use instruments and equipment that meet the standard requirements, such as electronic balances, lithium battery electrochemical performance testers, etc.

Experimental Condition Control: Ensure that the humidity and temperature of the experimental environment meet the standard requirements to avoid external interference affecting the test results.

Data Recording and Analysis: Record the parameters and results of each test in detail, establish a data analysis model, and optimize the performance of lithium nickel cobalt manganese oxide.

More samples: YD/T 3934-2021 JC/T 2453-2018 JGJ 94-2008

Sample only — not a preview of GB/T 37201-2018

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