“双碳”形势下三元材料失稳机制研究趋势

Trend of Research on Ternary Material Instability Mechanism under the Goal of“Double Carbon”

新能源产业发展壮大是实现"双碳"达成的重要手段,先进储能技术是新能源产业发展的核心,三元材料已经成为主流应用储能材料。三元材料失稳机制研究可为废旧正极材料再生利用提供指导。因此,本文主要介绍三元材料失稳机制原因,包括阳离子混排、热失稳、表面失稳、微裂纹等方面,其中,微裂纹是三元材料失稳的关键源头。并展望今后废旧正极材料再生利用可行策略途径。

Developing the new energy industry is an important means to achieve the goal of“Double Car-bon”,whereas the core of developing the new energy industry lies on advanced energy storage technolo-gies.Ternary material has become a mainstream energy storage material.The research on the instability mechanism of ternary material can provide guidance for the recycle of spent cathode materials.In this pa-per,the reasons for ternary material instability are introduced,including cation mixing,thermal instabili-ty,surface instability,microcrack,etc.Of these reasons,the microcrack is the key source for the insta-bility of ternary material.Besides,the feasible strategies and ways for recycling spent cathode materials are expected.