专利中用于防止锂离子电池热失控的材料OA

In order to prevent lithium-ion batters'thermal runaway,the paper selects more than 800 patents about modifying materials,and sorts out the technical distribution and modification methods.The modification methods include setting protective layers,adding additives,developing new materi-als,and using composite materials.It summarizes common materials,publics several thermosensitive materials and three capsule forms of phase change materials.By citing relevant papers to analyze new materials in patents,it predicts the patent technology's development.The research hotspots of new materials are as follows:the positive electrode active material is Prussian blue,the negative elec-trode active material is metallic lithium,the electrode current collector is graphene,the separator is natural cellulose,the electrolyte is eutectic EEs,the electrolyte solvent is sulfone,and the electrolyte additive is fluoroether.Several representative materials'preparation methods are provided for enter-prise researchers.