General Rules for Cathode Materials for Sodium Ion Batteries

This document specifies the classification, naming, technical requirements, inspection rules, marking, packaging, transportation, storage, and accompanying documentation for cathode materials used in sodium-ion batteries. It covers three main categories: transition metal oxide cathode materials (including layered and tunnel structures), Prussian blue cathode materials, and polyanionic cathode materials. Transition metal oxides are further divided by the number of metal elements (one to four), while Prussian blue types are classified by main metal (manganese, iron, nickel, copper), and polyanionic types by chemical composition (phosphate, fluorophosphate, pyrophosphate, sulfate). The document provides naming conventions using codes such as N, NF, NMC for typical materials. It also references test methods for tap density, particle size, moisture content, and pH value. This standard applies to the production and inspection of sodium-ion battery cathode materials, aiming to ensure quality and consistency in the new energy industry.