基于格氏反应的镁离子电解液的合成与性质

Magnesium-Ion Conducting Electrolyte Based on Grignard Reaction:Synthesis and Properties

随着“双碳”战略的实施,新能源产业的发展已经成为必然趋势,因而对先进储能技术的需求也日益增加。其中,电化学储能技术发展较为迅速,是当前学术界和产业界的研究热点。与锂离子电池相比,镁电池具有能量密度高、成本低、环境资源友好等优势,是下一代电池技术发展的重要方向之一。在传统非水电解液中,金属镁负极易形成低离子导电性的钝化层,阻碍镁离子的电化学沉积/溶出,极大限制了镁电池的发展。因此,探索有效的镁离子电解液体系是提升镁电池性能的关键要素。本工作以经典有机化学实验“格氏反应”为切入点,聚焦于镁离子非水导体的制备及其在镁电池体系的应用探索,将有机化学基础理论知识与前沿电化学储能技术相结合,帮助学生拓展科学视野,激发学习兴趣,同时提高能源安全意识和科学素养。

With the strategic implementation of carbon peaking and carbon neutrality,the demand for advanced energy storage technology is rapidly increasing.Among these,the electrochemical energy storage technologies have been evolving rapidly,and have attracted intensive attention from academia and industrial sectors.In comparison with lithium-ion batteries,magnesium batteries have emerged as an important direction for developing next-generation rechargeable batteries,in view of their higher energy densities,lower cost,higher natural abundance,and environmental friendliness.For classic non-aqueous electrolytes,the formation of the passivation films with low ionic conductivities on magnesium anodes significantly hinders the electrochemical dissolution/deposition of magnesium ions,thereby greatly limiting the development of magnesium batteries.Therefore,the exploration of high-performing magnesium-ion conductive electrolyte systems is a key direction in improving the performance of magnesium batteries.In this work,from the perspective of the classical organic chemistry experiment of“Grignard reaction”,we concentrate on the preparation of magnesium-ion conductive non-aqueous electrolytes and their application in magnesium battery systems.We combine the fundamentals of organic chemistry with cutting-edge technology in electrochemical energy storage,thus helping students to expand their scientific horizons,stimulating their research interests and improving their awareness of energy security and scientific literacy.