GB/T 20507-2018Spherical nickel hydroxide (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 20507-2006 "Spherical Nickel Hydroxide".

Compared with GB/T 20507-2006, the main changes of this standard are as follows.

--- Adjusted the chemical composition of the product, the upper limit of Fe and Cu content was adjusted from 0.01% to 0.005%;

--- Adjusted the electrochemical performance of the product, the lower limit of the discharge platform rate was adjusted from 65% to 70%;

--- Removed the 2006 version of A.2, adjusted the order of the appendix, and measured the amount of cobalt in the chemical composition analysis method. Revised;

--- Removed the grades Zn3Co1, Zn4Co0.7, and modified the 2006 edition of the grade;

--- The judgment of the test result of product specific capacity and discharge platform rate was revised.

1 Scope

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality certificates of spherical nickel hydroxide products. And the contract (or order form).

This standard applies to the nickel-based series of positive active material spherical nickel hydroxide products for rechargeable batteries.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document.

For the undated references, the latest edition (including all amendments) applies to this document.

GB/T 191 packaging storage and transportation icon

Preparation of GB/T 601 chemical reagent standard titration solution

Preparation of standard solution for GB/T 602 chemical reagent impurity determination

Preparation of preparations and products used in GB/T 603 chemical reagent test method

GB/T 1479.1 Determination of bulk density of metallic powders - Part 1

GB/T 5162 Determination of tap density of metal powder

GB/T 5314 powder metallurgy powder sampling method

GB/T 6284 General method for moisture determination in chemical products - Dry reduction method

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 13390 Determination of specific surface area of metal powders

GB/T 19077 Particle Size Analysis Laser Diffraction Method

3 Terms and definitions

The following terms and definitions apply to this document.