“高能量密度纳米固态金属锂电池研究”项目介绍

Project “High-energy solid-state lithium metal batteries based on nanostructured materials”

以金属锂作为负极的可充放锂二次电池从理论上分析具有很高的能量密度。但是在使用液态电解质的金属锂电池内部,充放电过程中金属锂表面会形成孔洞和枝晶,导致锂电极粉化。锂枝晶可能会刺穿多孔聚合物隔膜造成电池内短路,粉化后的锂电极与液态电解质间的界面副反应会更为严重,导致界面电阻增加并带来易燃烧。2016年科技部立项的国家重点研发计划纳米科技重点专项"高能量密度纳米固态金属锂电池研究"将研究开发能量密度大于400 W·h/kg的纳米固态金属锂电池,解决金属锂电池面临的循环性和安全性难题。通过该项目的实施,有望实现纳米科技由基础研究到产业应用的飞跃,推动纳米科技产业发展,为下一代高能量密度锂二次电池关键材料与技术发展奠定坚实的科学基础,为高端消费电子、电动汽车、国家安全、航空航天、规模储能等相关产业的发展提供关键支撑。

Ministry of Science and Technology of the People＇s Republic of China（MOST） initiates nanotechnology project in Feb.2016 for next 5 years.Totally 43 projects concerning seven research fields are announced in Jun.2016.Among the field of ＂energy storage materials based on nanostructure and nanotechnology＂,＂energy storage materials and devices based on nanomaterials＂ is aimed at advanced high-energy rechargeable lithium batteries.A research team led by Prof.GUO Yuguo from Institute of Chemistry of the Chinese Academy of Sciences,has been granted with the project titled ＂high-energy solid-state lithium metal batteries based on nanostructured materials＂.In this project,advanced solid-state lithium metal batteries with high energy density（≥400 W·h/kg,≥800 W·h/L） and long cycle lifespan（≥1000 cycles） will be developed.